EXHIBIT 4.1

                                   $75,000,000

                            IMPAX LABORATORIES, INC.

            3.50% CONVERTIBLE SENIOR SUBORDINATED DEBENTURES DUE 2012

                               PURCHASE AGREEMENT

                                                                   June 26, 2005

To the purchasers set forth on Schedule I hereto.

Dear Sirs and Mesdames:

        Impax Laboratories, Inc., a Delaware corporation (the "COMPANY"),
confirms its agreement with respect to the proposed issuance and sale to the
several purchasers named in Schedule I hereto (each, a "PURCHASER" and
collectively, the "PURCHASERS") of $75,000,000 principal amount of the Company's
3.50% Convertible Senior Subordinated Debentures Due 2012 (the "SECURITIES") to
be issued pursuant to the provisions of an Indenture to be dated as of June 27,
2005 (the "INDENTURE") between the Company and HSBC Bank USA, National
Association, as Trustee (the "TRUSTEE"). The Securities will be convertible into
shares (the "UNDERLYING SECURITIES") of common stock, par value $.01 per share,
of the Company (the "COMMON STOCK").

        The Securities are being issued and sold to the Purchasers in compliance
with an exemption from registration under the Securities Act of 1933, as amended
(the "SECURITIES ACT").

        Pursuant to the terms of the Securities and the Indenture, the
Securities may be resold or otherwise transferred only if the resale or transfer
is hereinafter registered under the Securities Act or an exemption from
registration under the Securities Act is available. The Purchasers and their
permitted transferees will be entitled to the benefits of a Registration Rights
Agreement dated as of the Closing Date (as defined herein) among the Company and
the Purchasers (the "REGISTRATION RIGHTS AGREEMENT" and collectively with this
Agreement, the Indenture and the Securities, the "TRANSACTION DOCUMENTS").

        1.      Representations and Warranties. The Company represents and
warrants to, and agrees with, the Purchasers that, except as disclosed in the
disclosure schedule attached to this Purchase Agreement (the "DISCLOSURE
SCHEDULE"), the Exchange Act Documents (as defined in Section 1(a) of this
Purchase Agreement) or the 8-K Filing (as defined in Section 6(k) of this
Purchase Agreement):



                (a)     Each document, if any, filed with the Securities and
        Exchange Commission (the "COMMISSION") pursuant to the
        Securities Exchange Act of 1934, as amended (the "EXCHANGE
        ACT"), since January 1, 2003 (collectively, the "EXCHANGE ACT
        DOCUMENTS") complied in all material respects with the
        requirements of the Exchange Act and the applicable rules and
        regulations of the Commission thereunder and, when taken
        together, do not contain any untrue statement of a material fact
        or omit to state a material fact necessary to make the
        statements therein, in the light of the circumstances under
        which they were made, not misleading.

                (b)     The Company has been duly incorporated, is validly
        existing as a corporation in good standing under the laws of the State
        of Delaware, has the corporate power and authority to own its property
        and to conduct its business as described in the Exchange Act Documents
        and is duly qualified as a foreign corporation to transact business and
        is in good standing in each jurisdiction in which the conduct of its
        business or its ownership or leasing of property requires such
        qualification, except to the extent that the failure to be so qualified
        or be in good standing would not have a Material Adverse Effect. As used
        in this Agreement, "MATERIAL ADVERSE EFFECT" means any material adverse
        effect on the business, assets, results of operations or condition
        (financial or otherwise) of the Company or on the transactions
        contemplated hereby and in the Transaction Documents or on the authority
        or ability of the Company to perform its obligations contemplated hereby
        or thereby.

                (c)     The Company has no direct or indirect subsidiaries.

                (d)     This Agreement has been duly authorized, executed and
        delivered by the Company and constitutes the legal, valid and binding
        obligations of the Company, enforceable against it in accordance with
        its terms, subject to applicable bankruptcy, insolvency, fraudulent
        conveyance or transfer, reorganization, moratorium and similar laws
        affecting creditors' rights and remedies generally, and to general
        principles of equity, including principles of materiality, commercial
        reasonableness, good faith and fair dealing (regardless of whether
        enforcement is sought in a proceeding at law or in equity) and except
        that rights to indemnification and contribution thereunder may be
        limited by federal or state securities laws or public policy relating
        thereto that have not been previously waived (collectively, the
        "ENFORCEABILITY EXCEPTIONS").

                (e)     The authorized capital stock of the Company conforms in
        all material respects to the description thereof contained in Section
        1(e) of the Disclosure Schedule, and which description conforms in all
        material respects to the rights in the instruments defining the same.

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                (f)     The shares of Common Stock outstanding prior to the
        issuance of the Securities have been duly authorized and are validly
        issued, fully paid and non-assessable.

                (g)     The Securities have been duly authorized and, when
        executed and authenticated in accordance with the provisions of the
        Indenture and delivered to and paid for by the Purchasers in accordance
        with the terms of this Agreement, will be valid and binding obligations
        of the Company, enforceable in accordance with their terms, subject to
        the Enforceability Exceptions, and will be entitled to the benefits of
        the Indenture and the Registration Rights Agreement.

                (h)     The Underlying Securities issuable upon conversion of
        the Securities have been duly authorized and reserved and, when issued
        upon conversion of the Securities in accordance with the terms of the
        Securities, will be validly issued, fully paid and non-assessable, and
        the issuance of the Underlying Securities will not be subject to any
        preemptive or similar rights.

                (i)     Except for the registration rights contained in (A) the
        Registration Rights Agreement and (B) (i) the Strategic Alliance
        Agreement dated June 27, 2001, between Teva Pharmaceuticals Curacao,
        N.V. and Impax Laboratories, Inc. (ii) the Registration Rights Agreement
        dated as of June 27, 2001 by and between Impax Laboratories, Inc. and
        Teva Pharmaceuticals Curacao, N.V., and (iii) the Registration Rights
        Agreement dated as of May 7, 2003 by and among the Company and the
        investors named therein, the Company has not granted or agreed to grant
        to any person any rights (including "piggy-back" registration rights) to
        have any securities of the Company registered with the Commission or any
        other governmental authority that have not been satisfied or waived.

                (j)     Except for the Stockholders' Agreement dated December
        14, 1999 by and among Global Pharmaceutical Corporation (known now as
        Impax Laboratories, Inc.) and the investors named therein, as amended by
        Amendment No. 1 thereto dated as of March 23, 2000, there are no voting
        agreements, voting trusts, proxies or other agreements or understandings
        with respect to the voting of any capital stock of the Company of which
        the Company is a party.

                (k)     Each of the Indenture and the Registration Rights
        Agreement has been duly authorized, executed and delivered by, and is a
        valid and binding agreement of, the Company enforceable in accordance
        with its terms, subject to the Enforceability Exceptions.

                (l)     The execution and delivery by the Company of, and the
        performance by the Company of its obligations under, the Transaction
        Documents will not contravene in any material respect any provision of

                                        3


        applicable law or the certificate of incorporation or by-laws of the
        Company or any agreement or other instrument binding upon the Company
        that is material to the Company for which a waiver or consent has not
        been obtained, or any judgment, order or decree of any governmental
        body, agency or court having jurisdiction over the Company, and no
        consent, approval, authorization or order of, or qualification with, any
        governmental body or agency is required for the performance by the
        Company of its obligations under the Transaction Documents, except such
        as may be required by the securities or Blue Sky laws of the various
        states in connection with the offer and sale of the Securities and by
        Federal and state securities laws with respect to the obligations of the
        Company under the Registration Rights Agreement or as may be required by
        the National Association of Securities Dealers, Inc. ("NASD") or such
        the failure of which to obtain would not, individually or in the
        aggregate, have a Material Adverse Effect.

                (m)     Since September 30, 2004, there has been no change or
        development that has had a Material Adverse Effect. The Company has not
        taken any steps to seek protection pursuant to any bankruptcy law nor
        does the Company have knowledge that its creditors intend to initiate
        involuntary bankruptcy proceedings or knowledge of any fact which would
        reasonably lead a creditor to do so. The Company is not as of the date
        hereof, and after giving effect to the transactions contemplated hereby
        to occur at the Closing, will not be Insolvent. For purposes hereof,
        "INSOLVENT" shall have the meaning specified in Section 271 of Article
        10 of the New York Debtor and Creditor Law, as the same has been
        construed by case law in existence as of the date hereof. All
        Indebtedness of the Company as of May 31, 2005 is disclosed on Section
        1(m) of the Disclosure Schedule. There has been no material change in
        the Indebtedness since such date.

                (n)     The Company is not in violation of its certificate of
        incorporation or by-laws or in default in the performance of any
        obligation, agreement, covenant or condition contained in any indenture,
        loan agreement, mortgage, lease or other agreement or instrument that is
        material to the Company to which the Company is a party or by which the
        Company or its properties or assets is subject or bound, except for such
        defaults that would not, individually or in the aggregate, have a
        Material Adverse Effect.

                (o)     There are no legal or governmental proceedings, orders,
        judgments, writs, injunctions, decrees or demands pending or, to the
        Company's knowledge, threatened to which the Company is a party or to
        which any of the properties or assets of the Company is subject or bound
        other than proceedings, orders, judgments, writs, injunctions, decrees
        or

                                        4


        demands that would not, individually or in the aggregate, have a
        Material Adverse Effect.

                (p)     To the Company's knowledge, the Company (i) is in
        compliance with any and all applicable foreign, federal, state and local
        laws and regulations relating to the protection of human health and
        safety, the environment or hazardous or toxic substances or wastes,
        pollutants or contaminants ("ENVIRONMENTAL LAWS"), (ii) has received all
        permits, licenses or other approvals required of it under applicable
        Environmental Laws to conduct its business, (iii) is in compliance with
        all material terms and conditions of any such permit, license or
        approval, (iv) is in compliance with any provisions of the Employee
        Retirement Income Security Act of 1974, as amended, ("ERISA") or the
        rules and regulations promulgated thereunder and (v) is in compliance
        with any provisions of the U.S. Foreign Corrupt Practices Act of 1977,
        as amended, (the "FOREIGN CORRUPT PRACTICE ACT") or the rules and
        regulations promulgated thereunder, except, with respect to clauses (i)
        through (v), where such noncompliance with Environmental Laws, failure
        to receive required permits, licenses or other approvals, or
        noncompliance with ERISA or the Foreign Corrupt Practices Act or failure
        to comply with the terms and conditions of such permits, licenses or
        approvals, would not, individually or in the aggregate, have a Material
        Adverse Effect

                (q)     There are no costs or liabilities to the Company
        associated with Environmental Laws (including, without limitation, any
        capital or operating expenditures required for clean-up, closure of
        properties or compliance with Environmental Laws or any permit, license
        or approval, any related constraints on operating activities and any
        potential liabilities to third parties) which would, individually or in
        the aggregate, have a Material Adverse Effect.

                (r)     The Company is not, and after giving effect to the
        issuance and sale of the Securities and the application of the proceeds
        thereof as contemplated in Section 3 hereof will not be, required to
        register as an "investment company" as such term is defined in the
        Investment Company Act of 1940, as amended.

                (s)     Neither the Company nor any of its affiliates (as
        defined in Rule 501(b) of Regulation D under the Securities Act, each an
        "AFFILIATE") has directly, or through any agent, (i) sold, offered for
        sale, solicited offers to buy or otherwise negotiated in respect of, any
        security (as defined in the Securities Act) which is or will be
        integrated with the sale of the Securities in a manner that would
        require the registration under the Securities Act of the Securities or
        (ii) offered, solicited offers to buy or sold the Securities by any form
        of general solicitation or general advertising (as those terms are used
        in Regulation D under the Securities Act) or in any manner

                                        5


        involving a public offering within the meaning of Section 4(2) of the
        Securities Act.

                (t)     Subject to compliance by the Purchasers with the
        representations and warranties set forth in Section 7, it is not
        necessary in connection with the offer, sale and delivery of the
        Securities to the Purchasers in the manner contemplated by this
        Agreement to register the Securities under the Securities Act or to
        qualify the Indenture under the Trust Indenture Act of 1939, as amended.

                (u)     The Securities satisfy the requirements set forth in
        Rule 144A(d)(3) under the Securities Act.

                (v)     The books, records and accounts of the Company in all
        material respects accurately and fairly reflect, in reasonable detail,
        the transactions in, and dispositions of, the assets of, and the results
        of operations of, the Company. The Company maintains a system of
        accounting controls sufficient to provide reasonable assurances that (i)
        transactions are executed in accordance with management's general or
        specific authorization, (ii) transactions are recorded as necessary to
        permit preparation of financial statements in conformity with generally
        accepted accounting principles and to maintain accountability for
        assets, (iii) access to assets is permitted only in accordance with
        management's general or specific authorization and (iv) the recorded
        accountability for assets is compared with existing assets at reasonable
        intervals and appropriate action is taken with respect to any
        differences.

                (w)     The Company owns or possesses, or has the right to use,
        all material patents, patent rights, licenses, inventions, copyrights,
        know-how (including trade secrets and other unpatented and/or
        unpatentable proprietary or confidential information, systems or
        procedures), trademarks, service marks, trade names and approved FDA new
        drug applications, approved abbreviated new drug applications and
        approved new animal drug applications currently employed or required by
        it in connection with the business currently conducted by it, or as
        currently proposed to be conducted, as described in the Exchange Act
        Documents, except such as the failure to so own or possess or have the
        right to use would not have, individually or in the aggregate, a
        Material Adverse Effect. To the Company's knowledge, there are no valid
        and enforceable United States patents that are infringed by the business
        currently conducted by the Company, or as currently proposed to be
        conducted by the Company, as described in the Exchange Act Documents and
        which infringement would have a Material Adverse Effect. The Company is
        not aware of any basis for a finding that the Company does not have
        valid title or license rights to the patents and patent applications
        referenced in the Exchange Act Documents as owned or licensed by the
        Company. To the

                                        6


        Company's knowledge, the Company is not subject to any judgment, order,
        writ, injunction or decree of any court or any Federal, state, local,
        foreign or other governmental department, commission, board, bureau,
        agency or instrumentality, domestic or foreign, or any arbitrator, nor
        has it entered into or are a party to any contract, which restricts or
        impairs the use of any of the foregoing which would, individually or in
        the aggregate, have a Material Adverse Effect. The Company is not aware
        of any prior art that may render any patent application owned by the
        Company which has not been disclosed to the United States Patent and
        Trademark Office and which would, individually or in the aggregate, have
        a Material Adverse Effect. The Company has not received any written
        notice of infringement of or conflict with asserted rights of any third
        party with respect to the business currently conducted by them as
        described in the Exchange Act Documents and which would, individually or
        in the aggregate, have a Material Adverse Effect.

                (x)     Other than with respect to Environmental Laws and ERISA
        (which are governed by Section 1(p)) the Company has such permits,
        licenses, consents, exemptions, franchises, authorizations and other
        approvals (each, an "AUTHORIZATION") of, and has made all filings with
        and notices to, all appropriate federal, state, local or foreign
        governmental or regulatory authorities and self regulatory organizations
        and all courts and other tribunals, as are necessary to own, lease,
        license and operate its respective properties and to conduct its
        business, except to the extent the failure to have any such
        Authorization or to make any such filing or notice would not,
        individually or in the aggregate, have a Material Adverse Effect. Each
        such Authorization is valid and in full force and effect and the Company
        is in compliance with all the terms and conditions thereof and with the
        rules and regulations of the authorities and governing bodies having
        jurisdiction with respect thereto, and no event has occurred (including,
        without limitation, the receipt of any notice from any authority or
        governing body) which allows or, after notice or lapse of time or both,
        would allow, revocation, suspension or termination of any such
        Authorization or results or, after notice or lapse of time or both,
        would result in any other impairment of the rights of the holder of any
        such Authorization except to the extent such failure to be valid and in
        full force and effect or to be in compliance, the occurrence of any such
        event or the presence of any such restriction would not, individually or
        in the aggregate, have a Material Adverse Effect.

                (y)     There are no outstanding subscriptions, rights,
        warrants, options, calls, convertible securities, commitments of sale or
        liens granted or issued by the Company relating to or entitling any
        person to purchase or otherwise to acquire any shares of the capital
        stock of the Company, except for options granted to directors and
        employees of the Company in the ordinary course of business since
        December 31, 2003.

                                        7


                (z)     The financial statements included or incorporated by
        reference in the Exchange Act Documents, together with related schedules
        and notes, present fairly in all material respects the financial
        position, results of operations and changes in financial position of the
        Company on the basis stated therein at the respective dates or for the
        respective periods to which they apply; such statements and related
        schedules and notes have been prepared in accordance with generally
        accepted accounting principles consistently applied throughout the
        periods involved, except as disclosed therein; and the other financial
        and statistical information and data set forth in the Exchange Act
        Documents are, in all material respects, accurately presented and
        prepared on a basis consistent with such financial statements and the
        books and records of the Company.

                (aa)    There are no existing or, to the Company's knowledge,
        threatened labor disputes with the employees of the Company which would,
        individually or in the aggregate, have a Material Adverse Effect.

                (bb)    The Company's manufacturing, distribution and marketing
        practices are in compliance with all applicable laws, rules,
        regulations, orders, licenses, judgments, writs, injunctions, or
        decrees, including, without limitation, laws and regulations
        administered by the United States Food and Drug Administration (the
        "FDA") and the Drug Enforcement Administration ("DEA") and comparable
        regulatory agencies in each country in which the Company's products are
        marketed, except for such noncompliances that would not, individually or
        in the aggregate, have a Material Adverse Effect.

                (cc)    The Company has not and will not use the services of any
        person debarred under the provisions of the Generic Drug Enforcement Act
        of 1992, 21 U.S.C. Section 335(a)(b). None of the Company's officers or
        employees has been convicted of a felony under federal law for conduct
        relating to the development, approval or regulation of any product
        subject to the Federal Food, Drug, and Cosmetic Act or the Controlled
        Substances Act.

                (dd)    There are no rulemaking or similar proceedings before
        the FDA or comparable Federal, state, local or foreign government bodies
        which involves the Company, which, if the subject of an action
        unfavorable to the Company, would, individually or in the aggregate,
        have a Material Adverse Effect.

                (ee)    The Company has not received any written communication
        notifying the Company as to the termination or threatened termination or
        modification or threatened modification of any consulting, licensing,
        marketing, research and development, cooperative or any similar
        agreement described in the Exchange Act Documents.

                                        8


                (ff)    The statements relating to legal matters or proceedings,
        as specified on Section 1(ff) of the Disclosure Schedule, fairly
        summarize in all material respects such matters or proceedings as of the
        date hereof.

                (gg)    Neither the Company, nor to the Company's knowledge, any
        of its officers, directors or affiliates has taken, directly or
        indirectly, any action designed to or which has constituted the
        stabilization or manipulation of the price of the Common Stock or any
        security convertible into or exchangeable or exercisable for Common
        Stock to facilitate the sale or resale of any of the Securities.

                (hh)    The Company has filed all Federal, state, local and
        foreign tax returns which are required to be filed through the date
        hereof (except where the failure to so file would not have a material
        adverse effect on the Company), which returns are true and correct in
        all material respects, or have received extensions thereof, and have
        paid all taxes shown on such returns and all assessments received by
        them to the extent that the same are material and have become due. To
        the Company's knowledge, there are no tax audits or investigations
        pending, which if adversely determined, would, individually or in the
        aggregate, have a Material Adverse Effect.

                (ii)    The Company is insured against such losses and risks and
        in such amounts as are customary in the businesses in which it is
        engaged or currently proposes to engage including, but not limited to,
        insurance covering clinical trial liability, product liability and real
        or personal property owned or leased against theft, damage, destruction,
        act of vandalism and all other risks customarily insured against. All
        policies of insurance and fidelity or surety bonds insuring the Company
        or the Company's businesses, assets, employees, officers and directors
        are in full force and effect. The Company is in compliance with the
        terms of such policies and instruments in all material respects. The
        Company has no reason to believe that it will not be able to renew its
        existing insurance coverage as and when such coverage expires or to
        obtain similar coverage from similar insurers as may be necessary to
        continue its business at a cost that would not, individually or in the
        aggregate, have a Material Adverse Effect. Since January 1, 2003, the
        Company has not been denied any insurance coverage which it has sought
        or for which it has applied.

                (jj)    The Company has good and marketable title in fee simple
        to all real property and good and valid title to all personal property
        it purports to own, in each case free and clear of all liens,
        encumbrances and defects except such as do not materially affect the
        value of such property and do not interfere with the use made and
        proposed to be made of such property by the Company. Any real property
        and buildings held under lease by the Company is held by it under valid,
        subsisting and enforceable leases with such exceptions as are not
        material and do not interfere with

                                        9


        the use made and proposed to be made of such property and buildings by
        the Company.

                (kk)    There is no document, contract or other agreement of a
        character required to be filed with the Commission under the Exchange
        Act which is not filed as required by the Exchange Act or the rules and
        regulations of the Commission thereunder. Each description of a
        contract, document or other agreement in the Exchange Act Documents
        fairly reflects in all material respects the material terms of the
        underlying document, contract or agreement. Each material agreement
        described in the Exchange Act Documents or incorporated by reference is
        in full force and effect and is valid and enforceable by and against the
        Company in accordance with its terms.

                (ll)    Anything in this Agreement or elsewhere herein to the
        contrary notwithstanding, it is understood and acknowledged by the
        Company (i) that none of the Purchasers have been asked to agree, nor
        has any Purchaser agreed, to desist from purchasing or selling, long
        and/or short, securities of the Company, or "derivative" securities
        based on securities issued by the Company or to hold the Securities for
        any specified term and (ii) that any Purchaser, and counter parties in
        "derivative" transactions to which any such Purchaser is a party,
        directly or indirectly, presently may have a "short" position in the
        Common Stock. The Company further understands and acknowledges that one
        or more Purchasers may engage in hedging activities at various times
        during the period that the Securities are outstanding.

                (mm)    The Company confirms that, after giving effect to the
        8-K Filing (as defined below), neither it nor, to its knowledge, any
        officer, director or agent of the Company has provided any of the
        Purchasers or their respective agents or counsel with any information
        that constitutes in the Company's reasonable determination material,
        nonpublic information. The Company understands and confirms that each of
        the Purchasers will rely on the foregoing representations in effecting
        transactions relating to the Securities. All written disclosure provided
        to the Purchasers regarding the Company, its business and the
        transactions contemplated hereby, including the Schedules to this
        Agreement, furnished by or on behalf of the Company, taken as a whole,
        are true and correct and do not contain any untrue statement of a
        material fact or omit to state any material fact necessary in order to
        make the statements made therein, in the light of the circumstances
        under which they were made, not misleading, except that at the request
        of the Purchasers, the Company has not disclosed to the Purchasers
        information concerning the financial condition, results of operations
        and cash flows of the Company as of and for the year ended December 31,
        2004 and as of and for the three months ended March 31, 2005. The
        Company acknowledges and agrees that no Purchaser makes or

                                       10


        has made any representations or warranties with respect to the
        transactions contemplated hereby other than those specifically set forth
        in Section 7.

        2.      Agreements to Sell and Purchase. On the basis of the
representations and warranties contained in this Agreement and subject to its
terms and conditions, the Company hereby agrees to sell to the several
Purchasers, and each Purchaser, upon the basis of the representations and
warranties herein contained, but subject to the conditions hereinafter stated,
agrees, severally and not jointly, to purchase from the Company the respective
principal amount of Securities set forth in Schedule I hereto opposite its name
at a purchase price of 100% of the principal amount thereof (the "PURCHASE
PRICE").

        3.      Delivery of Proceeds. The proceeds to be delivered on the
Closing Date (as defined in Section 4 hereof) in the aggregate amount of
$75,000,000 (less the expenses of Highbridge International LLC (the "LEAD
PURCHASER") payable pursuant to Section 6(b) hereof, as set forth on a schedule
to be provided by the Lead Purchaser to the Company prior to the Closing) shall
be used only to satisfy the payment obligations arising from the acceleration of
the Company's 1.25% Convertible Senior Subordinated Debentures due April 1,
2024, which satisfaction shall be effective simultaneously with the Closing.

        4.      Payment and Delivery. Payment for the Securities shall be made
to, or as directed by, the Company in Federal or other funds immediately
available in New York City against delivery of such Securities for the
respective accounts of the several Purchasers at 10:00 a.m., New York City time,
on June 27, 2005, or at such other time on the same or such other date as shall
be mutually agreeable to the Company and the Lead Purchaser. The time and date
of such payment are hereinafter referred to as the "CLOSING DATE."

        The Securities shall be in definitive form or global form, as specified
by the Lead Purchaser, and registered in such names and in such denominations as
the applicable Purchaser shall request in writing not later than one full
Business Day prior to the Closing Date. The Securities shall be delivered to
each Purchaser on the Closing Date for the account of such Purchaser, with any
transfer taxes, if any, payable in connection with the transfer of the
Securities to the Purchasers duly paid, against payment of the Purchase Price
therefor.

        5.      Conditions to the Purchasers' Obligations. The several
obligations of the Purchasers to purchase and pay for the Securities on the
Closing Date are subject to the following conditions:

                (a)     Subsequent to the execution and delivery of this
        Agreement and prior to the Closing Date:

                        (i)     there shall not have occurred any downgrading,
                nor shall any notice have been given of any intended or
                potential downgrading or of any review for a possible change
                that does not

                                       11


                indicate the direction of the possible change, in the rating
                accorded the Company or any of the Company's securities or in
                the rating outlook for the Company by any "nationally recognized
                statistical rating organization," as such term is defined for
                purposes of Rule 436(g)(2) under the Securities Act; and

                        (ii)    there shall not have occurred any event that has
                a Material Adverse Effect.

                (b)     The Purchasers shall have received on the Closing Date a
        certificate, dated the Closing Date and signed by an executive officer
        of the Company, to the effect set forth in Section 5(a)(i) and to the
        effect that the representations and warranties of the Company contained
        in this Agreement are true and correct as of the Closing Date and that
        the Company has complied with all of the agreements and satisfied all of
        the conditions on its part to be performed or satisfied hereunder on or
        before the Closing Date.

                The officer signing and delivering such certificate may rely
        upon the best of his or her knowledge as to the matters set forth in
        Section 5(a)(i) or as to proceedings threatened.

                (c)     The Purchasers shall have received on the Closing Date
        an opinion of (1) Blank Rome LLP, counsel for the Company, dated the
        Closing Date, to the effect set forth in Exhibit A-1 and (2)
        Sonnenschein Nath & Rosenthal, special FDA counsel for the Company,
        dated the Closing Date, to the effect set forth in Exhibit A-2. Such
        opinions shall be rendered to the Purchasers at the request of the
        Company and shall so state therein.

                (d)     The "lock-up" agreements, each substantially in the form
        of Exhibit B hereto, between the Purchasers and certain executive
        officers and directors of the Company relating to sales and certain
        other dispositions of shares of common stock or certain other
        securities, delivered to the Purchasers on or before the date hereof,
        shall be in full force and effect on the Closing Date.

                (e)     The Company will cause the Securities to be eligible for
        trading on the Private Offering, Resales and Trading through Automatic
        Linkages ("PORTAL") system of the NASD.

                (f)     The Purchasers shall have received on the Closing Date
        the consent of Wachovia Bank, N.A. in the form attached hereto as
        Exhibit C.

        6.      Covenants of the Company. In further consideration of the
agreements of the Purchasers contained in this Agreement, the Company covenants
with each Purchaser as follows:

                                       12


                (a)     The Company will endeavor to qualify the Securities for
        offer and sale under the securities or Blue Sky laws of such
        jurisdictions as you shall reasonably request, provided, however, that
        the Company shall not be required to file any general consent to service
        of process or to qualify as a foreign corporation or as a dealer in
        securities in any jurisdiction in which it is not so qualified or to
        subject itself to taxation in respect of doing business in any
        jurisdiction in which it is otherwise not so subject.

                (b)     Whether or not the transactions contemplated in this
        Agreement are consummated or this Agreement is terminated, the Company
        shall pay or cause to be paid all expenses incident to the performance
        of its obligations under this Agreement, including: (i) the fees,
        disbursements and expenses of the Company's counsel and the Company's
        accountants, if applicable, in connection with the issuance and sale of
        the Securities and all other fees or expenses in connection with the
        preparation of the Transaction Documents and all amendments and
        supplements thereto, (ii) all costs and expenses related to the transfer
        and delivery of the Securities to the Purchasers, including any transfer
        or other taxes payable thereon, (iii) the fees and expenses, if any,
        incurred in connection with the admission of the Securities for trading
        in PORTAL or any appropriate market system, (iv) the costs and charges
        of the Trustee and any transfer agent, registrar or depositary, (v) the
        cost of the preparation, issuance and delivery of the Securities, (vi)
        the legal fees and expenses of the Lead Purchaser incurred in connection
        with the negotiation, due diligence and documentation of the Transaction
        Documents and the transactions contemplated hereby and thereby
        ("PURCHASER EXPENSES") and (vii) all other cost and expenses incident to
        the performance of the obligations of the Company hereunder for which
        provision is not otherwise made in this Section. The Lead Purchaser may,
        on the Closing Date, reduce its portion of the Purchase Price by the
        amount of Purchaser Expenses less any Purchaser Expenses paid by the
        Company prior to the Closing Date provided, that if the schedule
        described in Section 3 is not delivered to the Company at the
        time set forth therein, the Company shall pay the expenses and fees
        specified therein within five Business Days of its delivery.

                (c)     Neither the Company nor any Affiliate will sell, offer
        for sale or solicit offers to buy or otherwise negotiate in respect of
        any security (as defined in the Securities Act) which could be
        integrated with the sale of the Securities in a manner which would
        require the registration under the Securities Act of the Securities.

                (d)     The Company will not solicit any offer to buy or offer
        or sell the Securities or the Underlying Securities by means of any form
        of general solicitation or general advertising (as those terms are used
        in

                                       13


        Regulation D under the Securities Act) or in any manner involving a
        public offering within the meaning of Section 4(2) of the Securities
        Act.

                (e)     While any of the Securities or the Underlying Securities
        remain "restricted securities" within the meaning of the Securities Act,
        the Company will make available, upon request, to any seller of such
        Securities the information specified in Rule 144A(d)(4) under the
        Securities Act, unless the Company is then subject to Section 13 or
        15(d) of the Exchange Act.

                (f)     The Company will use its commercially reasonable efforts
        to permit the Securities to be designated PORTAL securities in
        accordance with the rules and regulations adopted by the NASD relating
        to trading in PORTAL.

                (g)     During the period of two years after the Closing Date,
        the Company will not, and will not permit any of its affiliates under
        its control (as defined in Rule 144 under the Securities Act) to resell
        any of the Securities or the Underlying Securities which constitute
        "restricted securities" under Rule 144 that have been reacquired by any
        of them.

                (h)     The Company will not take any action prohibited by
        Regulation M under the Exchange Act in connection with the distribution
        of the Securities contemplated hereby.

                (i)     The Company hereby agrees that, without the prior
        written consent of the Lead Purchaser (on behalf of the Purchasers), it
        will not, during the period ending 60 days after the date hereof, (i)
        offer, pledge, sell, contract to sell, sell any option or contract to
        purchase, purchase any option or contract to sell, grant any option,
        right or warrant to purchase, lend, or otherwise transfer or dispose of,
        directly or indirectly, any shares of common stock of the Company or any
        securities convertible into or exercisable or exchangeable for Common
        Stock or (ii) enter into any swap or other arrangement that transfers to
        another, in whole or in part, any of the economic consequences of
        ownership of the Common Stock, whether any such transaction described in
        clause (i) or (ii) above is to be settled by delivery of Common Stock or
        such other securities, in cash or otherwise. The foregoing sentence
        shall not apply to the following issuances (the "EXCLUDED ISSUANCES")
        (A) to the sale of the Securities under this Agreement or the issuance
        of the Underlying Securities, (B) to the issuance by the Company of any
        shares of Common Stock upon the exercise of an option or warrant or the
        conversion of a security outstanding on the date hereof, provided that
        the terms of such option, warrant or convertible security relating to
        any purchase, exercise or conversion price thereunder, the number of
        securities issuable thereunder or any time period relating to the
        exercise or conversion thereunder are not

                                       14

        amended, modified or changed on or after the date hereof, (C) to the
        grant of any option or issuance of any stock, restricted stock or stock
        appreciation right or other stock-linked security under any employee
        equity or employee equity-linked plan of the Company that exist as of
        the date hereof or that is approved by the independent members of the
        Company's Board of Directors; (D) in connection with any bona-fide
        merger or acquisition as approved by the Company's Board of Directors;
        provided that any issuance by the Company of shares of Common Stock is
        not to raise cash to fund such merger or acquisition; (E) in connection
        with any bona-fide strategic agreement, joint venture agreement, limited
        liability company agreement or similar agreement entered into with any
        supplier, manufacturer, distributor or customer that is approved by the
        Company's Board of Directors, the primary purpose of which is not to
        raise cash; (F) to shares of Common Stock or other equity securities or
        equity linked securities of the Company pursuant to a bona fide firm
        commitment underwritten public offering with gross proceeds to the
        Company of at least $30 million with a nationally or regionally
        recognized underwriter; or (G) the filing of a registration statement to
        permit sales of the Company's common stock by Teva Pharmaceuticals
        Curacao, N.V.; provided, however, that in the case of any dispositions
        pursuant to (D) or (E), the transferee, in each case, agrees to be bound
        by the terms of the previous sentence.

                (j)     The Company shall apply the Purchase Price only as
        specified in Section 3 hereof.

                (k)     On or before 8:30 a.m., New York time, on the first
        business day following the date of this Agreement, the Company shall
        file a Current Report on Form 8-K describing the terms of the
        transactions contemplated by the Transaction Documents in the form
        required by the 1934 Act and attaching the material Transaction
        Documents (including, without limitation, this Agreement, the Indenture,
        the form of the Debenture and the Registration Rights Agreement) as
        exhibits to such filing (including all attachments, the "8-K FILING").
        From and after the filing of the 8-K Filing with the Commission, no
        Purchaser shall be in possession of any material, nonpublic information
        received from the Company or any of its officers, directors, employees
        or agents, that is not disclosed in the 8-K Filing. Subject to the
        foregoing, neither the Company nor any Purchaser shall issue any press
        releases or any other public statements with respect to the transactions
        contemplated hereby; provided, however, that the Company shall be
        entitled, without the prior approval of any Purchaser,
        to make any press release or other public disclosure with respect to
        such transactions (i) in substantial conformity with the 8-K Filing and
        contemporaneously therewith or (ii) as, in the reasonable judgment of
        the Company or its counsel, is required by applicable law or regulations
        or applicable stock exchange rules (provided that in the case of

                                       15


        clause (i) each Purchaser shall be provided by the Company with a draft
        of such press release or other public disclosure prior to its release).
        Notwithstanding the foregoing, the Company shall not publicly disclose
        the name of any Purchaser, or include the name of any Purchaser in any
        filing with the Commission or any regulatory agency or the applicable
        stock exchange, without the prior written consent of such Purchaser,
        except (i) for disclosure thereof in the 8-K Filing or Registration
        Statement or similar disclosure as required in future Commission filings
        or (ii) as required by applicable law or regulations or applicable stock
        exchange rules or any order of any court or other governmental agency,
        in which case the Company shall use its reasonable best efforts to
        provide such Purchaser with prior notice of such disclosure.

        7.      Representations and Warranties of Purchasers. Each Purchaser,
severally and not jointly, represents and warrants to, and agrees with, the
Company that:

                7.1     Authorization; Enforceability. Such Purchaser is duly
                and validly organized, validly existing and in good standing
                under the laws of the jurisdiction of its incorporation or
                organization with the requisite corporate power and authority to
                purchase the Securities being purchased by it hereunder and to
                execute and deliver this Agreement and the other Transaction
                Documents to which it is a party. This Agreement constitutes,
                and upon execution and delivery thereof, each other Transaction
                Document to which such Purchaser is a party will constitute,
                such Purchaser's valid and legally binding obligation,
                enforceable in accordance with its terms, subject to the
                Enforceability Exceptions.

                7.2     Investment Intent. Such Purchaser is acquiring the
                Securities being purchased by it hereunder solely for its own
                account, and not with a present view to the public resale or
                distribution of all or any part thereof, except pursuant to
                sales that are registered under, or are exempt from the
                registration requirements of, the Securities Act.

                7.3     Information. Such Purchaser has had access to all of the
                filings of the Company that are filed on the EDGAR system prior
                to the date hereof. To the extent requested by such Purchaser,
                the Company has, prior to the date hereof, provided such
                Purchaser with information regarding the business, operations
                and financial condition of the Company, and has, prior to the
                date hereof, granted to such Purchaser the opportunity to ask
                questions of and receive satisfactory answers from
                representatives of the Company, its officers, directors,
                employees and agents concerning the Company and materials
                relating to the terms and conditions of the

                                       16


                purchase and sale of the Securities hereunder, and based
                thereon, such Purchaser believes it can make an informed
                decision with respect to its investment in the Securities.
                Neither such information nor any other investigation conducted
                by such Purchaser or its representatives shall modify, amend or
                otherwise affect such Purchaser's right to rely on the Company's
                representations and warranties contained in this Agreement.

                7.4     Restrictions on Transfer. (a) Such Purchaser is a
                qualified institutional buyer as defined in Rule 144A under the
                Securities Act (a "QIB") and an institutional "accredited
                investor" within the meaning of Regulation D under the
                Securities Act. Each Purchaser, severally and not jointly,
                agrees with the Company that it will not solicit offers for, or
                offer or sell, such Securities by any form of general
                solicitation or general advertising (as those terms are used in
                Regulation D under the Securities Act) or in any manner
                involving a public offering within the meaning of Section 4(2)
                of the Securities Act. Each Purchaser, severally and not
                jointly, agrees to offer, sell or otherwise transfer the
                Securities, prior to the date which is two years after the
                Closing Date, only (a) to the Company or any parent or
                subsidiary thereof, (b) for so long as the Securities are
                eligible for resale pursuant to Rule 144A, to a person it
                reasonably believes is a QIB that purchases for its own account
                or for the account of a QIB to which notice is given that the
                transfer is being made in reliance on Rule 144A, (c) pursuant to
                a registration statement which has been declared effective under
                the Securities Act, or (d) pursuant to another available
                exemption from the registration requirements of the Securities
                Act and applicable state securities or "blue sky" laws, subject
                to the Company's and the Trustee's right prior to any such
                offer, sale or transfer pursuant to clause (d) to require the
                delivery of an opinion of counsel, certification and/or other
                information reasonably satisfactory to each of them, and in each
                of the foregoing cases, a certificate of transfer in the form
                specified in the Indenture and the Securities is completed and
                delivered by the transferor to the Trustee.

                        (b)     Such Purchaser (i) agrees that it will only sell
                        the Securities or other securities of the Company in a
                        transaction that complies in all material respects with
                        applicable federal and state securities laws, (ii)
                        agrees that it will not sell or otherwise dispose of or
                        transfer the Securities or other securities of the
                        Company or any interest therein in a transaction that is
                        part of a plan or scheme to evade the registration
                        requirements of the Securities Act and (iii)
                        acknowledges and agrees that notwithstanding the
                        effectiveness of a registration

                                       17


                        statement covering the Securities, the Securities will
                        remain "restricted securities" until such Securities
                        have been sold pursuant to (x) an effective registration
                        statement or (y) Rule 144, and such Purchaser will
                        remain responsible for compliance with applicable
                        federal and state securities laws in connection with any
                        resale by the Purchaser of the Securities.

                        (c)     Such Purchaser understands that the Company is
                        relying on the representations of such Purchaser set
                        forth in this Section 7.4 in order to determine
                        compliance with applicable securities laws in connection
                        with the sale of the Securities to such Purchaser.

                7.5     Legend. Such Purchaser understands that the certificates
                representing the Securities may bear a restrictive legend
                reflecting the transfer restrictions set forth above.

                7.6     Reliance on Exemptions. Such Purchaser understands that
                the Securities are being offered and sold to it in reliance upon
                specific exemptions from the registration requirements of
                federal and state securities laws and that the Company is
                relying upon the truth and accuracy of the representations and
                warranties of such Purchaser set forth in this Section 7 in
                order to determine the availability of such exemptions and the
                eligibility of such Purchaser to acquire the Securities.

                7.7     Non-Affiliate Status. Such Purchaser is not an Affiliate
                of the Company. Such Purchaser's investment in the Securities is
                not for the purpose of acquiring, directly or indirectly,
                control of, and it has no intent to acquire or exercise control
                of, the Company or to influence the decisions or policies of the
                Board of Directors.

        8.      Indemnity. (a) The Company agrees to indemnify and hold harmless
each Purchaser, each person, if any, who controls any Purchaser within the
meaning of either Section 15 of the Securities Act or Section 20 of the Exchange
Act, and each affiliate of any Purchaser within the meaning of Rule 405 under
the Securities Act (each, an "INDEMNIFIED PERSON") from and against any and all
losses, claims, damages, penalties, fees and liabilities, including, without
limitation, the reasonable legal fees and other reasonable expenses of one
counsel (in addition to any local counsel) incurred (irrespective of whether any
such indemnitee is a party to the action for which indemnification hereunder is
sought) in connection with any suit, action or proceeding or any claim
(collectively, "Losses"), as incurred, as a result of, or arising out of or
relating to (a) any misrepresentation or breach of any representation or
warranty made by the Company in the Transaction Documents, (b) any breach of any
covenant,

                                       18


agreement or obligation of the Company contained in any Transaction Document or
(c) any cause of action, suit or claim brought or made against such Indemnified
Person by a third party (including for these purposes a derivative action
brought on behalf of the Company) and arising out of or resulting from the
execution, delivery or performance by the Company of the Transaction Documents
or any other certificate, instrument or document contemplated hereby or thereby;
provided that the Company shall not be required to indemnify any of the
Indemnified Persons to the extent Losses arise or result from a material
misrepresentation or material breach of any representation or warranty made by
such Purchaser or other Indemnified Person contained in the Transaction
Documents, or a material breach of any covenant, agreement or obligation by such
Purchaser or other Indemnified Person contained in the Transaction Documents.

        (b)             If any suit, action, proceeding (including any
governmental or regulatory investigation), claim or demand shall be brought or
asserted against any Indemnified Person, such Indemnified Person shall promptly
notify the Company in writing, and the Company shall have the right to retain
one counsel (in addition to any local counsel) reasonably satisfactory to the
Indemnified Person to represent the Indemnified Person and any others the
Company may designate in such proceeding and shall pay the reasonable fees and
expenses of such counsel related to such proceeding; provided, however, that
failure to so notify the Company shall not relieve such Company from any
liability hereunder except to the extent the Company is prejudiced as a result
thereof. In any such proceeding, any Indemnified Person shall have the right to
retain its own counsel, but the fees and expenses of such counsel shall be at
the expense of such Indemnified Person unless (i) Company and the Indemnified
Person shall have mutually agreed to the contrary, (ii) the Company has failed
within a reasonable time to retain counsel reasonably satisfactory to the
Indemnified Person or (iii) the named parties in any such proceeding (including
any impleaded parties) include both the Company and the Indemnified Person, the
Company proposes to have the same counsel represent it and the Indemnified
Person, and representation of both parties by the same counsel would, in the
opinion of counsel for the Indemnified Person, constitute a conflict of
interest. It is understood that the Company shall reimburse all such reasonable
fees and expenses actually incurred (upon delivery to the Company of reasonable
documentation therefor setting forth such expenses in reasonable detail) unless
a bona fide dispute exists with respect to such expenses. The Company shall not
be liable for any settlement of any proceeding effected without its written
consent, but if settled with such consent or if there be a final, non-appealable
judgment for the plaintiff, the Company agrees to indemnify any Indemnified
Person from and against any Liabilities by reason of such settlement or
judgment. The Company shall not, without the prior written consent of the
Indemnified Person, effect any settlement of any pending or threatened
proceeding in respect of which any Indemnified Person is a party, unless such
settlement includes an unconditional release of such Indemnified

                                       19


Person from all liability on claims that are the subject matter of such
proceeding and no admission of fault on the part of the Indemnified Person.

        (c)             The remedies provided for in this Section 8 are not
exclusive and shall not limit any rights or remedies that may otherwise be
available to any Indemnified Person at law or in equity.

        (d)             The indemnity provisions contained in this Section 8 and
the representations, warranties and other statements of the Company contained in
this Agreement shall remain operative and in full force and effect regardless of
(i) any termination of this Agreement, (ii) any investigation made by or on
behalf of any Purchaser, any person controlling any Purchaser or any affiliate
of any Purchaser or by or on behalf of the Company, its officers, directors or
any person controlling the Company and (iii) acceptance of and payment for any
of the Securities.

        9.      Termination. The Purchasers may terminate this Agreement by
notice given to the Company executed by the Lead Purchaser (except in the case
of clauses (i) and (v), which termination right may be exercised by each
Purchaser as to itself but not the other Purchasers), if prior to the Closing
Date (i) in the good faith judgment of a Purchaser a Material Adverse Effect
shall have occurred between the date hereof and the Closing Date, (ii) trading
in securities generally on the New York Stock Exchange, Inc., the American Stock
Exchange or the Nasdaq National Market shall have been suspended or materially
limited, (iii) a material disruption in securities settlement, payment or
clearance services in the United States shall have occurred, (iv) any moratorium
on commercial banking activities shall have been declared by United States or
New York State authorities, (v) there shall have been (A) an outbreak or
escalation of hostilities between the United States and any foreign power, or
(B) an outbreak or escalation of any other insurrection or armed conflict
involving the United States or any other national or international calamity or
emergency, or (C) any material change in the financial markets of the United
States which, in the case of (A), (B) or (C) above and in the judgment of a
Purchaser, makes it impracticable or inadvisable to proceed with the
transactions contemplated by this Agreement or (vi) the failure of the Company
to satisfy the conditions set forth in Section 5 of this Agreement on or before
June 30, 2005.

        10.     Effectiveness. This Agreement shall become effective upon the
execution and delivery hereof by the parties hereto.

        If this Agreement shall be terminated by the Purchasers, or any of them,
because of any failure or refusal on the part of the Company to comply with the
terms or to fulfill any of the conditions of this Agreement, or if for any
reason the Company shall be unable to perform its obligations under this
Agreement, the Company will reimburse the Purchasers or such Purchasers as have
so terminated this Agreement with respect to themselves, severally, for all
out-of-pocket

                                       20


expenses (including the fees and disbursements of their counsel) reasonably
incurred by such Purchasers in connection with this Agreement or the issuance of
Securities contemplated hereunder.

        11.     Rights of Participation. (a) In the event that, within one year
from the Closing Date, the Company proposes to issue equity securities or other
securities exchangeable or exercisable for or convertible into equity securities
(other than Excluded Issuances), the Company shall offer the Lead Purchaser the
opportunity to purchase such securities, on the same terms and conditions as
those offered to all other purchasers and pursuant to documentation reasonably
satisfactory to the Company and the Lead Purchaser.

                (b)     (i) The Company shall deliver to the Lead Purchaser a
        written notice (the "OFFER NOTICE") of any proposed or intended issuance
        or sale or exchange (the "OFFER") of the securities being offered (the
        "OFFERED SECURITIES") pursuant to Section 11(a) above, which Offer
        Notice shall (x) identify and describe the Offered Securities, (y)
        describe the price and other terms upon which they are to be issued,
        sold or exchanged, and the number or amount of the Offered Securities to
        be issued, sold or exchanged and (z) offer to issue and sell to or
        exchange with such Purchasers the Offered Securities.

                        (ii)    To accept an Offer, in whole or in part, such
                Purchaser must deliver a written notice to the Company prior to
                the end of the fifth Business Day after such Purchaser's receipt
                of the Offer Notice if the Purchaser enters into a
                confidentiality agreement in form and substance reasonably
                satisfactory to the Company relating to the Offer, or the second
                Business Day after such Purchaser's receipt of the Offer Notice
                if the Purchaser does not enter into a confidentiality agreement
                in form and substance reasonably satisfactory to the Company
                relating to the Offer, (the "OFFER PERIOD"), setting forth the
                portion of the Offered Securities, if any, that the Lead
                Purchaser elects to purchase (the "NOTICE OF ACCEPTANCE");
                provided, however, if the Lead Purchaser desires to accept an
                offer for less than all of the Offered Securities, it may only
                accept an Offer for 50% or less of the Offered Securities.

                        (iii)   The Company shall have ten Business Days from
                the expiration of the Offer Period above to offer, issue, sell
                or exchange all or any part of such Offered Securities as to
                which a Notice of Acceptance has not been given by the
                Purchasers during the Offer Period (the "REFUSED SECURITIES"),
                only upon terms and conditions (including, without limitation,
                unit prices and interest rates) that are not more favorable to
                the acquiring person or

                                       21


                persons or less favorable to the Company than those set forth in
                the Offer Notice.

                        (iv)    In the event the Company shall propose to sell
                less than all the Refused Securities (any such sale to be in the
                manner and on the terms specified in Section 11(b)(iii) above),
                then the Lead Purchaser may, at its sole option and in its sole
                discretion, reduce the number or amount of the Offered
                Securities specified in its Notice of Acceptance to an amount
                that shall be not less than the number or amount of the Offered
                Securities that such Purchaser elected to purchase pursuant to
                Section 11(b)(ii) above multiplied by a fraction, (i) the
                numerator of which shall be the number or amount of Offered
                Securities the Company actually proposes to issue, sell or
                exchange (including Offered Securities to be issued or sold to
                such Purchaser pursuant to Section 11(b)(iii) above prior to
                such reduction) and (ii) the denominator of which shall be the
                original amount of the Offered Securities. In the event that
                such Purchaser so elects to reduce the number or amount of
                Offered Securities specified in its Notice of Acceptance, the
                Company may not issue, sell or exchange more than the reduced
                number or amount of the Offered Securities unless and until such
                securities have again been offered to the Lead Purchaser in
                accordance with Section 11(b)(i) above.

                        (v)     Upon the closing of the issuance, sale or
                exchange of all or less than all of the Offered Securities, the
                Lead Purchaser shall acquire from the Company, and the Company
                shall issue to the Lead Purchaser within a reasonable period of
                time, the number or amount of Offered Securities specified in
                the Notices of Acceptance, as reduced pursuant to Section
                11(b)(iv) above if the Purchasers have so elected, upon the
                terms and conditions specified in the Offer. The purchase by the
                Purchasers of any Offered Securities is subject in all cases to
                the preparation, execution and delivery by the Company and the
                Purchasers, within a reasonable period of time, of a purchase
                agreement relating to such Offered Securities reasonably
                satisfactory in form and substance to the Purchasers and their
                respective counsel.

                        (vi)    Any Offered Securities not acquired by the
                Purchasers or other persons in accordance with this Section
                11(b) above may not be issued, sold or exchanged until they are
                again offered to the Purchasers under the procedures specified
                in this Agreement.

        12.     Successors and Assigns. This Agreement shall inure to the
benefit of and be binding upon the Company and the Purchasers, any controlling
persons

                                       22


referred to herein and their respective successors and assigns; provided, that
the rights and obligations of the Lead Purchaser with respect to the rights of
participation set forth in Section 11 of this Purchase Agreement may not be
assigned to any party, other than a successor to the entire business of the Lead
Purchaser, without the prior written consent of the Company; provided, further,
that the rights and obligations of the Company pursuant to this Purchase
Agreement may not be assigned to any party other than a successor to the entire
business of the Company.

        13.     Notices. All notices and other communications hereunder shall be
in writing and shall be deemed to have been duly given if mailed by registered
or certified mail, postage prepaid, return receipt requested, or otherwise
delivered by hand or by messenger.

        Notices to the Purchasers shall be given at the address as set forth on
Schedule I hereto, with a copy to (solely for informational purposes):

                        Schulte Roth & Zabel LLP
                        919 Third Avenue
                        New York, New York 10022
                        Telephone:   (212) 756-2000
                        Facsimile:  (212) 593-5955
                        Attention:  Eleazer Klein, Esq.

        Notices to the Company shall be given to the Company at:

                        IMPAX Laboratories, Inc.
                        3735 Castor Avenue
                        Philadelphia, PA  19124
                        Attention: Mr. Barry R. Edwards
                        Chief Executive Officer
                        Facsimile:  (215) 289-5932

                        with a copy to (solely for informational purposes):

                        Blank Rome LLP
                        One Logan Square
                        Philadelphia, PA  19103-6998
                        Attention: Ronald Fisher, Esq.
                        Facsimile: (215) 832-5479

        14.     Counterparts. This Agreement may be signed in any number of
counterparts, each of which shall be an original, with the same effect as if the
signatures thereto and hereto were upon the same instrument.

                                       23


        15.     Severability. If any provision of this Agreement becomes or is
declared by a court of competent jurisdiction to be illegal, unenforceable, or
void, portions of such provision, or such provision in its entirety, to the
extent necessary, shall be severed from this Agreement and the balance of this
Agreement shall be enforceable in accordance with its terms.

        16.     Amendment and Waivers. Any term of this Agreement may be amended
and the observance of any term of this Agreement may be waived (either generally
or in a particular instance and either retroactively or prospectively), only
with the written consent of the Company and the Lead Purchaser.

        17.     Entire Agreement. This Agreement constitutes the full and entire
understanding and agreement among the parties with regard to the subjects
hereof. Neither this Agreement nor any term hereof may be amended, waived,
discharged or terminated other than by a written instrument signed by the party
against whom enforcement of any such amendment, waiver, discharge, or
termination is sought.

        18.     Survival. The respective representations, warranties, covenants
and agreements of the Company and the Purchasers set forth in or made pursuant
to this Agreement will remain in full force and effect and will survive delivery
of and payment for the Securities sold hereunder and any termination of this
Agreement.

        19.     Independence of Purchasers. The obligations of each Purchaser
under any Transaction Document are several and not joint with the obligations of
any other Purchaser, and no Purchaser shall be responsible in any way for the
performance of the obligations of any other Purchaser under any Transaction
Document. Nothing contained herein or in any other Transaction Document, and no
action taken by the Purchasers pursuant hereto or thereto, shall be deemed to
constitute the Purchasers as a partnership, an association, a joint venture or
any other kind of entity, or create a presumption that the Purchasers are in any
way acting in concert or as a group with respect to such obligations or the
transactions contemplated by the Transaction Documents. The Purchasers represent
and warrant that they are not acting in concert or as a group with respect to
such obligations or the transactions contemplated by the Transaction Documents
and confirm that they have or legal counsel has on their behalf independently
participated in the negotiation of the transaction contemplated hereby. Each
Purchaser shall be entitled to independently protect and enforce its rights,
including, without limitation, the rights arising out of this Agreement or out
of any other Transaction Documents, and it shall not be necessary for any
Purchaser to be joined as an additional party in any proceeding for such
purpose.

        20.     Applicable Law. THIS AGREEMENT SHALL BE GOVERNED BY AND
CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. To the
fullest extent permitted by

                                       24


applicable law, the Company hereby irrevocably submits to the non-exclusive
jurisdiction of any New York State court or Federal court sitting in the County
of New York in respect of any suit, action or proceeding arising out of or
relating to the provisions of this Agreement and irrevocably agree that all
claims in respect of any such suit, action or proceeding may be heard and
determined in any such court. The parties hereto hereby waive, to the fullest
extent permitted by applicable law, any objection that they may now or hereafter
have to the laying of venue of any such suit, action or proceeding brought in
any such court, and any claim that any such suit, action or proceeding brought
in any such court has been brought in an inconvenient forum. TO THE FULLEST
EXTENT PERMITTED BY APPLICABLE LAW, EACH PARTY HEREBY IRREVOCABLY WAIVES ANY
RIGHT IT MAY HAVE, AND AGREES NOT TO REQUEST, A JURY TRIAL FOR THE ADJUDICATION
OF ANY DISPUTE HEREUNDER OR IN CONNECTION WITH OR ARISING OUT OF THIS AGREEMENT
OR ANY TRANSACTION CONTEMPLATED HEREBY.

        21.     Headings. The headings of the sections of this Agreement have
been inserted for convenience of reference only and shall not be deemed a part
of this Agreement.

                  [Remainder of Page Intentionally Left Blank.]

                                       25


                                             Very truly yours,

                                             IMPAX LABORATORIES, INC.


                                             By: /s/ Barry R. Edwards
                                                 -------------------------------
                                                 Name:   Barry R. Edwards
                                                 Title:  Chief Executive Officer



Accepted as of the date hereof

PURCHASERS:

HIGHBRIDGE INTERNATIONAL LLC

By: Highbridge Capital Management, LLC

By: /s/ Adam J. Chill
    -------------------------------------
    Name:  Adam J. Chill
    Title: Managing Director



                                                                      SCHEDULE I

               PURCHASER
           NAME AND ADDRESS                          SECURITIES TO BE PURCHASED
- ----------------------------------------------      ----------------------------

Highbridge International LLC
c/o Highbridge Capital Management, LLC
9 West 57th Street, 27th Floor
New York, NY  10019
Attn:  Ari J. Storch / Adam J. Chill
Tel:  (212) 287-4720
Fax:  (212) 751-0755                                                $ 75,000,000
 and
Attn:  Andrew Martin
Tel:  (212) 287-4735
Fax:  (212) 755-4250

Residence:  Cayman Islands

                                                                    ------------
      Total:..............................................          $ 75,000,000
                                                                    ============



                                                                     EXHIBIT A-1

                           OPINION OF BLANK, ROME LLP

        The opinion of Blank, Rome LLP, to be delivered pursuant to Section 5(c)
of the Purchase Agreement shall be to the effect that:

        A.      The Company is validly existing as a corporation in good
standing under the laws of the State of Delaware.

        B.      The Company is duly qualified to do business as a foreign
corporation and is in good standing in the Commonwealth of Pennsylvania and the
State of California.

        C.      The Company has the corporate power and authority to enter into
and perform its obligations under each of the Purchase Agreement, the
Registration Rights Agreement, the Indenture and the Securities.

        D.      Each of the Purchase Agreement, the Registration Rights
Agreement and the Indenture has been duly authorized, executed and delivered by,
and is a valid and binding agreement of, the Company, enforceable against the
Company in accordance with its terms.

        E.      The Securities have been duly authorized by the Company and,
when executed and authenticated in accordance with the provisions of the
Indenture, and delivered to and paid for by the Purchasers, in each case in
accordance with the terms of the Purchase Agreement, will be valid and binding
obligations of the Company, enforceable against the Company in accordance with
their terms.

        F.      The Underlying Securities reserved for issuance upon conversion
of the Securities have been duly authorized and reserved and, when issued upon
conversion of the Securities in accordance with the terms of the Securities,
will be validly issued, fully paid and non-assessable, and the issuance of the
Underlying Securities will not be subject to any preemptive or similar rights of
any stockholder under the General Corporation Law of the State of Delaware (the
"GCL"), the Company's Restated Certificate of Incorporation, as amended (the
"Certificate of Incorporation"), or the Company's By-Laws (the "By-Laws"), or by
any contract listed in Annex A to this opinion letter.

        G.      The execution and delivery by the Company of, and the
performance by the Company of its obligations under, the Purchase Agreement, the
Indenture, the Registration Rights Agreement and the Securities will not
contravene in any material respect any provision of applicable law or the
Certificate of



Incorporation or By-Laws of the Company or any agreement or other instrument
binding upon the Company that is listed in Annex A to this opinion letter, or,
to such counsel's knowledge, any judgment, order or decree of any governmental
body, agency or court having jurisdiction over the Company; and no consent,
approval, authorization or order of, or qualification with, any governmental
body or agency under the GCL, any law, rule or regulation of the State of New
York, or any federal law, rule or regulation of the United States, is required
for the performance by the Company of its obligations under the Purchase
Agreement, the Indenture, the Registration Rights Agreement or the Securities,
except such as may be required by the securities or "blue sky" laws of the
various states in connection with the offer and sale of the Securities and by
U.S. federal and state securities laws with respect to the Company's obligations
under the Indenture and the Registration Rights Agreement.

        H.      To such counsel's knowledge, the Company is not, and after
giving effect to the offering and sale of the Securities and the application of
the proceeds thereof as described in Section 3 of the Purchase Agreement will
not be, required to register as an "investment company" as such term is defined
in the Investment Company Act of 1940, as amended.

        I.      Based on the representations, warranties and agreements of the
Company in Sections 1(s), 1(t), 1(u), 6(c) and 6(d) of the Purchase Agreement
and of the Purchasers in Section 7 of the Purchase Agreement, it is not
necessary in connection with the offer, sale and delivery of the Securities to
the Purchasers under the Purchase Agreement to register the Securities under the
Securities Act of 1933 or to qualify the Indenture under the Trust Indenture Act
of 1939, it being understood that no opinion is expressed as to any subsequent
resale of any Security or Underlying Security.

                                        2


                                                                     EXHIBIT A-2

                    OPINION OF SONNENSCHEIN NATH & ROSENTHAL

        The opinion of Sonnenschein Nath & Rosenthal to be delivered pursuant to
Section 5(c) of the Purchase Agreement shall be to the effect that:

        A. To the best of such counsel's knowledge, except as disclosed in
Section 1(w) of the Purchase Agreement, the Company possesses all approvals,
certificates, registrations, authorizations and permits issued by the FDA, or
any other federal or state agencies or bodies engaged in the regulation of
pharmaceuticals, necessary to conduct its business, except for such approvals,
certificates, registrations, authorizations or permits the absence of which to
maintain would not have a material adverse effect on the Company.

        B. To the best of such counsel's knowledge, the Company has not received
any notice of proceedings relating to the revocation or modification of any such
approval, certificate, registration, authorization or permit which, singly or in
the aggregate, if the subject of any unfavorable decision, ruling or finding,
would have a material adverse effect on the Company.

        C. To the best of such counsel's knowledge, except as disclosed in
Section 1(bb) of the Purchase Agreement, the Company is in compliance with all
applicable federal laws, regulations, orders and decrees governing its business
as prescribed by the FDA or any other federal agencies or bodies engaged in the
regulation of pharmaceuticals, except where noncompliance would not singly, or
in the aggregate, have a material adverse effect on the Company.

        D. To the best of such counsel's knowledge, all bioavailability studies
undertaken to support approval of the Company's products for commercialization
have been conducted in compliance with all applicable federal laws, orders or
regulations in all material respects.

        E. To the best of such counsel's knowledge, no filing or submission to
the FDA or any other federal or state regulatory body, that is intended to be
the basis for any approval, contains any material omission or material false
information.



                                                                       EXHIBIT B

                            [FORM OF LOCK-UP LETTER]

                                       June __, 2005

Highbridge International LLC
c/o Highbridge Capital Management, LLC
9 West 57th Street, 27th Floor
New York, NY  10019

Dear Sirs and Mesdames:

        The undersigned understands that you propose to enter into a Purchase
Agreement (the "PURCHASE AGREEMENT") with IMPAX Laboratories, Inc., a Delaware
corporation (the "COMPANY"), providing for the issuance by the Company (the
"OFFERING") to Highbridge International LLC and such other Purchasers identified
therein (collectively, the "PURCHASERS") of the Company's Convertible Senior
Subordinated Debentures Due 2012 (the "SECURITIES"). The Securities will be
convertible into shares of common stock, par value $.01, of the Company (the
"COMMON STOCK").

        To induce the Purchasers to enter into the Purchase Agreement, the
undersigned hereby agrees that, without the prior written consent of Highbridge
International LLC on behalf of the Purchasers, it will not, during the period
commencing on the date hereof and ending 60 days after the Closing Date (as
defined in the Purchase Agreement), (1) offer, pledge, sell, contract to sell,
sell any option or contract to purchase, purchase any option or contract to
sell, grant any option, right or warrant to purchase, lend, or otherwise
transfer or dispose of, directly or indirectly, any shares of Common Stock or
any securities convertible into or exercisable or exchangeable for Common Stock
or (2) enter into any swap or other arrangement that transfers to another, in
whole or in part, any of the economic consequences of ownership of the Common
Stock, whether any such transaction described in clause (1) or (2) above is to
be settled by delivery of Common Stock or such other securities, in cash or
otherwise. The foregoing sentence shall not apply to (a) the sale of any
Securities to the Purchasers pursuant to the Purchase Agreement, (b)
transactions relating to shares of Common Stock or other securities acquired in
open market transactions after the completion of the



Offering, (c) exercises of options or warrants to purchase Common Stock, (d)
dispositions of Common Stock as a bona fide gift, (e) dispositions by will or
the laws of descent or distribution, or (f) dispositions to members of the
undersigned's immediate family; provided, however, that in the case of any
dispositions pursuant to (d), (e) or (f) the transferee, in each case, agrees to
be bound by the terms of this Lock-Up Agreement.

        In addition, the undersigned agrees that, without the prior written
consent of Highbridge International LLC on behalf of the Purchasers, it will
not, during the period commencing on the date hereof and ending 60 days after
the Closing Date, make any demand for or exercise any right with respect to, the
registration of any shares of Common Stock or any security convertible into or
exercisable or exchangeable for Common Stock other than in connection with the
filing by the Company of a Registration Statement on Form S-8. The undersigned
also agrees and consents to the entry of stop transfer instructions with the
Company's transfer agent and registrar against the transfer of the undersigned's
shares of Common Stock except in compliance with the foregoing restrictions. The
undersigned further agrees to suspend any existing trading plans or other
arrangements pursuant to Rule 10b5-1 (a "10b5-1 PLAN") under the Securities
Exchange Act of 1934, as amended, during the period commencing on the date
hereof and ending 60 days after the Closing Date. Notwithstanding the
restrictions contained in the previous sentence, the undersigned shall be
permitted subsequent to the date hereof to enter into a 10b5-1 Plan, provided
that the undersigned hereby expressly agrees to suspend any trading or other
transactions pursuant to such 10b5-1 Plan during the period commencing on the
date hereof and ending 60 days after the Closing Date.

        The undersigned understands that the Company and the Purchasers are
relying upon this Lock-Up Agreement in purchasing the Securities provided for in
the Purchase Agreement. The undersigned further understands that this Lock-Up
Agreement is irrevocable and shall be binding upon the undersigned's heirs,
legal representatives, successors and assigns.

                                        2


                                               Very truly yours,

                                               ---------------------------------
                                               (Name)

                                               ---------------------------------
                                               (Address)

                                        3


                               DISCLOSURE SCHEDULE

SECTION 1(A):

         The Company filed the following amendments to its reports filed with
the Commission since January 1, 2003:

         Form 10-Q/A filed on March 16, 2005
         Form 10-Q/A filed on November 17, 2004
         Form 10-Q/A filed on November 16, 2004
         Form 10-Q/A filed on May 26, 2004
         Form 10-Q/A filed on May 12, 2004
         Form 10-Q/A filed on May 28, 2003
         Form 10-Q/A filed on May 22, 2003

Also, see disclosure under section 1(z).

SECTION 1(E):

         Authorized Capital Stock

         Our authorized capital stock consists of 75,000,000 shares of common
stock, $.01 par value per share, and 2,000,000 shares of preferred stock, $.01
par value per share. As of December 31, 2003, there were 53,307,136 shares of
our common stock and 75,000 shares of Series 2 preferred stock outstanding. On
January 30, 2004, holders of the Series 2 preferred stock converted 75,000
shares of Series 2 preferred stock into 1,500,000 shares of our common stock.

         Common Stock

         The shares of common stock currently outstanding are validly issued,
fully paid and non-assessable. Subject to the rights of the holders of shares of
preferred stock outstanding, if any, holders of shares of our common stock:

         o are entitled to receive dividends when and as declared by the board
           of directors from legally available funds;

         o are entitled, upon our liquidation, dissolution or winding up, to a
           pro rata distribution of the assets and funds available for
           distribution to stockholders;

         o are entitled to one vote per share on all matters on which
           stockholders generally are entitled to vote; and

         o do not have preemptive rights to subscribe for additional shares of
           common stock or securities convertible into shares of common stock.

         Only holders of common stock vote on all matters brought for the
stockholders' approval, except as otherwise required by law and subject to the


voting rights of the holders of any outstanding shares of preferred stock. As of
February 27, 2004, no shares of preferred stock were outstanding.

         Preferred Stock

         Our restated certificate of incorporation provides that we may, by vote
of our board of directors, issue preferred stock in one or more series having
the rights, preferences, privileges and restrictions thereon, including dividend
rights, dividend rates, conversion rights, voting rights, terms of redemption,
redemption prices, liquidation preferences and the number of shares constituting
any series or designation of such series without further vote or action by the
stockholders. The issuance of preferred stock may have the effect of delaying,
deferring or preventing a change in control of us without further action by the
stockholders and may adversely affect the voting and other rights of the holders
of common stock. The issuance of preferred stock with voting and conversion
rights may adversely affect the voting power of the holders of common stock,
including the loss of voting control to others.

SECTION 1(L):

         Consent and waiver of Wachovia Bank, National Association ("Wachovia")
is required under the Loan and Security Agreement, as amended, between Wachovia
(as successor to Congress Financial Corporation) and the Company, which consent
and waiver shall be obtained as a condition to the consummation of the
transactions contemplated by the Purchase Agreement to which this Disclosure
Agreement is attached.

         Consents and waivers pursuant to the documentation entered into in
connection with the Company's 1.25% Convertible Senior Subordinated Debentures
due April 1, 2024, which consents and waivers will not be required upon the
satisfaction of said Debentures as contemplated pursuant to Section 3 of the
Purchase Agreement to which this Disclosure Schedule is attached.

SECTION 1(M):

         See disclosure under section 1(n).

         All Indebtedness as of December 31, 2004 and as of May 31, 2005:


                                                                                       December 31, 2004   May 31, 2005
                                                                                       -----------------   ------------
                                                                                                (in thousands)
                                                                                                     
$95 million 1.25% convertible senior subordinated debentures due 2024                     $    95,000       $    95,000
     8.17% loan payable to Cathay Bank in 83 monthly installments of $19,540              -----------       -----------
          commencing June 28, 2001, through May 27, 2008, with a balance of
          $2,332,117 due on June 28, 2008 .........................................             2,350             2,332
     7.50% loan payable to Cathay Bank in 83 monthly installments of $24,629
          commencing November 14, 2001, through October 13, 2008, with a balance
          of $3,120,740 due on November 14, 2008 ..................................             3,146             3,121





                                                                                       December 31, 2004   May 31, 2005
                                                                                       -----------------   ------------
                                                                                                (in thousands)
                                                                                                     
     Loan payable to Wachovia N.A. in 60 monthly installments of $52,500
          commencing December 1, 2002, through November 30, 2007, at prime
          interest rate plus 1.5% (the interest rate at 12/31/04 was 6.75%)........             2,470             2,129
                                                                                          -----------       -----------
                                                                                          $     7,966       $     7,582
                  Less:  Current portion of long-term debt                                       (923)             (923)
                                                                                          -----------       -----------
                                                                                          $     7,043       $     6,659
                                                                                          -----------       -----------

Short term credit facility                                                                      5,000             5,000

                                                                                          $   107,043       $   107,582
                                                                                          ===========       ===========

SECTION 1(N):

         As a result of the Company's receipt of a notice of default from a
holder of more than 25% aggregate principal amount of its outstanding 1.250%
Convertible Senior Subordinated Debentures due 2024 (the "Debentures"), based
upon the Company's failure to file its Annual Report on Form 10-K for the year
ended December 31, 2004, and the Company's failure to file such report by June
21, 2005, the Trustee under the Indenture relating to the Debentures or holders
of 25% in aggregate principal amount of the outstanding Debentures may declare
immediately due and payable the entire $95.0 million principal amount, and
premium, if any, of the Debentures and any interest accrued thereon.

         The Debenture default has also resulted in a default under the
Company's existing credit agreement with Wachovia Bank.

SECTION 1(O):

         See the Company's filings on Form 8-K filed with the Commission and
disclosure under section 1(ff).

SECTION 1(V):

         See the disclosure concerning material weaknesses in Exhibit 99.5 to
the draft Form 8-K report previously provided.

SECTION 1(W):

         See section 1(ff) below.

SECTION 1(Y):

         Warrants to purchase 741,503 shares of Common Stock issued to investors
pursuant to Common Stock and Warrant Purchase Agreement dated May 6, 2003
between the Company and the purchasers listed therein.



         $95.0 million in aggregate principal amount of 1.250% convertible
senior subordinated debentures due 2024, issued on April 5, 2004.

         Stock Option Plans - approximately 6,020,000 options outstanding to
purchase Common Stock under the Company's various plans. There remain options
available under our stock option plans for future grant covering approximately
1.3 million additional shares.

SECTION 1(Z):

         Depending upon the guidance received by the Company from the Office of
the Chief Accountant of the Commission and the advice of the Company's auditors
concerning the Company's recognition of revenues related to its strategic
alliance agreement with a subsidiary of Teva Pharmaceutical Industries Ltd., it
is possible that the Company's financial statements included in its quarterly
reports on Form 10-Q for the quarters ended March 31, June 30 and September 30,
2004 will be restated.

SECTION 1(FF):

         See section 1(o) above. The material pending litigation involving the
Company is as follows:

Patent Litigation

         There has been substantial litigation in the pharmaceutical,
biological, and biotechnology industries with respect to the manufacture, use,
and sale of new products that are the subject of conflicting patent rights. One
or more patents cover most of the brand name controlled-release products for
which we are developing generic versions. Under the Hatch-Waxman Amendments,
when a drug developer files an ANDA for a generic drug, seeking approval before
expiration of a patent which has been listed with the FDA as covering that brand
name product the developer must certify that its product will not infringe on
the listed patent(s) and/or that the listed patent is invalid or unenforceable.
That certification must also be provided to the patent holder, who may challenge
the developer's certification of non-infringement, invalidity or
unenforceability by filing a suit for patent infringement within 45 days of the
patent holder's receipt of such certification. If the patent holder files suit,
the FDA can review and approve the ANDA, but is prevented from granting final
marketing approval of the product until a final judgment in the action has been
rendered, or 30 months from the date the certification was received, whichever
is sooner. Should a patent holder commence a lawsuit with respect to an alleged
patent infringement by us, the uncertainties inherent in patent litigation make
the outcome of such litigation difficult to predict. The delay in obtaining FDA
approval to market our product candidates as a result of litigation, as well as
the expense of such litigation, whether or not we are successful, could have a
material adverse effect on our results of operations and financial position. In
addition, there can be no assurance that any patent litigation will be resolved
prior to the 30-month period. As a result, even if the FDA were to approve a




product upon expiration of the end of the 30-month period, we may elect not to
commence marketing that product if patent litigation is still pending.

         Lawsuits have been filed against us in connection with fourteen of our
Paragraph IV filings. The outcome of such litigation is difficult to predict
because of the uncertainties inherent in patent litigation.

ASTRAZENECA AB ET AL. V. IMPAX:  THE OMEPRAZOLE CASES

         In May 2000, AstraZeneca AB and four of its related companies filed
suit against us in the U.S. District Court in Wilmington, Delaware claiming that
the Company's submission of an ANDA for Omeprazole Delayed Release Capsules, 10
mg and 20 mg, constitutes infringement of six U.S. patents relating to
AstraZeneca's Prilosec product. The action seeks an order enjoining us from
marketing Omeprazole Delayed Release Capsules, 10 mg and 20 mg until February 4,
2014, and reimbursement for costs and attorney fees associated with this
litigation.

         In February 2001, AstraZeneca and the same related companies filed the
same suit against us in the same federal court in Delaware for infringement,
based upon the Company's amendment to its ANDA adding 40 mg strength Omeprazole
Delayed Release Capsules.

         AstraZeneca filed similar lawsuits against nine other generic
pharmaceutical companies (Andrx, Genpharm, Cheminor, Kremers, LEK, Eon, Mylan,
Apotex, and Zenith). Due to the number of these cases, a multidistrict
litigation proceeding, In re Omeprazole 10 mg, 20 mg, and 40 mg Delayed Released
Capsules Patent Litigation, MDL-1291, has been established to coordinate
pre-trial proceedings. Both lawsuits filed by AstraZeneca against the Company
have been transferred to the multidistrict litigation jurisdiction.

         Early in the multidistrict litigation, the trial court ruled that one
of the six patents-in-suit was not infringed by the sale of a generic omeprazole
product and that certain other patents were invalid. These rulings effectively
eliminated four patents from the trial of these infringement cases, although
AstraZeneca may appeal these rulings as part of the overall appeal process in
the case.

         On October 11, 2002, after a trial involving Andrx, Genpharm, Cheminor,
and Kremers, the trial judge handling the multidistrict litigation ruled on
AstraZeneca's complaints that three of these four defendants ("First Wave
Defendants") infringed the remaining patents-in-suit. The trial judge ruled that
three of the First Wave defendants, Andrx, Genpharm, and Cheminor, infringed the
remaining two patents asserted by AstraZeneca in its complaints, and that those
patents are valid until 2007. In the same ruling, the trial court ruled that the
remaining First Wave Defendant, Kremers, did not infringe either of the
remaining two patents. Kremers' formulation was held to differ from the
formulation used by the other First Wave Defendants in several respects. In
mid-December 2003, the U.S. Court of Appeals for the Federal Circuit affirmed
the October 2002 ruling in all respects. Subsequent petitions for rehearing have
been denied.



         The formulation that we employ in manufacturing its generic equivalent
of omeprazole has not been publicly announced. Our formulation has elements that
resemble those of other First Wave Defendants in certain respects, but it also
has elements that differ. The Company believes that it has defenses to
AstraZeneca's claims of infringement, but the opinion rendered by the trial
court in the First Wave cases makes the outcome of AstraZeneca's litigation
against us is uncertain.

         In August 2003, the court issued an order dismissing four of the
patents-in-suit, three with prejudice. On September 30, 2003, as a result of the
court's dismissal, AstraZeneca served each of the Second Wave Defendants,
including IMPAX, with an amended complaint. In October 2003, we filed an answer
to the amended complaint in which we asserted a new counterclaim with antitrust
allegations. The counterclaim will be severed, and proceedings relating to it
will be stayed until after trial of the patent infringement case.

         In December 2003, the trial court entered a new scheduling order
governing pre-trial proceedings relating to the Second Wave Defendants,
including us. The schedule for completion of the litigation in the Second Wave,
including AstraZeneca's litigation against the Company, now provides that all
fact and expert discovery is complete. AstraZeneca's expert reports on issues as
to which it bears the burden of proof, including issues of alleged infringement,
were served on February 17, 2004. Our responsive expert reports were served on
July 12, 2004. Astra's reply reports were served in early September 2004, prior
to the launch of our commercial product.

         The December 2003 scheduling order was amended most recently in August
2004. The amended scheduling order also allows for the filing of summary
judgment motions beginning in March 2005. The Company has filed two motions for
summary judgment against AstraZeneca: one alleging that the patents-in-suit are
invalid under 35 U.S.C. Sect. 102(b) due to public usage of the invention prior
to the filing of the patents; the other alleging that our ANDA products do not
infringe any claim of the patents-in-suit. AstraZeneca did not file any summary
judgment motions against the Company. Briefing on the summary judgment motions
has yet to be completed, and we do not have any timetable by which decisions on
the summary judgment motions should be expected.

         This matter is pending before Judge Jones of the Southern District of
New York, together with AstraZeneca's patent infringement cases against four
other defendants who have separately filed ANDAs seeking approval from the FDA
to market omeprazole drug products. The case remains in discovery pretrial
proceedings. No trial date has yet been set. The Company intends to defend
vigorously. The amended scheduling order states that no further extensions of
time shall be granted to the parties.

         In conjunction with our strategic partner, Teva, we recently have
initiated a commercial launch of certain omeprazole products which were the
subject of its ANDA application and which are at issue in this litigation. If we
are not ultimately successful in establishing invalidity or non-infringement,
the court may award monetary damages associated with the commercial sale of our
omeprazole products. Pursuant to the Strategic Alliance Agreement with Teva,



however, Teva is responsible for indemnifying the Company with respect to any
such monetary damages, provided certain conditions are met.

         On January 4, 2005, AstraZeneca moved to amend its Complaint against
the Company to add claims of willful infringement and for enhanced damages on
the basis of this commercial launch. The Company and AstraZeneca subsequently
reached a stipulation that was approved by the Court allowing the Amended
Complaint to be filed. On February 14, 2005, the Company filed its answer and
counterclaims to the Amended Complaint. Among the Company's counterclaims are a
number of claims for relief under federal antitrust law, including claims
arising under Section 2 of the Sherman Act, and claims seeking declaratory
judgment that the patents are not infringed and are unenforceable.

AVENTIS PHARMACEUTICALS INC., ET AL. V. IMPAX:  THE FEXOFENADINE CASES

         On March 25, 2002, Aventis Pharmaceuticals Inc., Merrell
Pharmaceuticals Inc., and Carderm Capital L.P. (collectively referred to as
Aventis) sued the Company in the U.S. District Court for the District of New
Jersey (Civil Action No. 02-CV-1322) alleging that IMPAX's proposed fexofenadine
and pseudoephedrine hydrochloride tablets, containing 60 mg of fexofenadine and
120 mg of pseudoephedrine hydrochloride, infringe U.S. Patent Nos. 6,039,974;
6,037,353; 5,738,872; 6,187,791; 5,855,912; and 6,113,942. On November 7, 2002,
Aventis filed an amended complaint, which added an allegation that IMPAX's
Fexofenadine and Pseudoephedrine Hydrochloride 60 mg/120 mg Extended Release
Tablet product infringes U.S. Patent No. 6,399,632. Aventis seeks an injunction
preventing us from marketing its Fexofenadine and Pseudoephedrine Hydrochloride
60 mg/120 mg Extended Release Tablet product until the patents-in-suit have
expired, and an award of damages for any commercial manufacture, use, or sale of
our Fexofenadine and Pseudoephedrine Hydrochloride 60 mg/120 mg Extended Release
Tablet product, together with costs and attorneys' fees. The Company believes
that it has defenses to the claims made by Aventis based on noninfringement and
invalidity.

         Aventis has also filed a suit against Barr Laboratories, Inc., Mylan
Pharmaceuticals, Inc., Dr. Reddy's Pharmaceuticals and Teva Pharmaceuticals USA,
Inc. in New Jersey asserting the same patent infringement against these
defendants' proposed Fexofenadine and Pseudoephedrine or Fexofenadine products.
Our case has been consolidated for trial with the Barr, Mylan, Dr. Reddy and
Teva cases.

         On March 25, 2004, Aventis and AMR filed a complaint and first amended
complaint against the Company and Ranbaxy, alleging infringement of two
additional patents relating to the process for making the active pharmaceutical
ingredient, fexofenadine hydrochloride. These patents, United States Patent Nos.
5,581,011 and 5,750,703, are owned by AMR and exclusively licensed to Aventis.

         On July 23, 2003, we filed Summary Judgment motions for
non-infringement of U.S. Patent Nos. 6,039,974, 6,113,942, and 5,855,912; and
for non-infringement and invalidity of U.S. Patent No. 5,738,872. On June 29,
2004, the court granted the Company's Motions for Summary Judgment of
Non-infringement of the `912 and `942 patents and denied the Company's Motion



for Summary Judgment of Non-infringement of the `974 patent. At the same time,
the court ordered that a ruling on the Company's motion for Summary Judgment for
the Non-infringement and invalidity of the `872 patent was reserved pending a
Markman hearing held on September 9, 2004 to assist the court in construing the
patent's product-by-process claims. On October 4, 2004, Judge Greenaway
construed the claims of the fifth patent in favor of us and the other
defendants. The parties submitted further briefs regarding the invalidity of the
`872 patent in light of the court's claim construction. On May 16, 2005, Judge
Greenway granted Summary Judgment of invalidity on the 872 patent . We will have
the opportunity to file additional summary judgment motions and to assert both
non-infringement and invalidity of the remaining patents (if necessary) at
trial.

         According to the current scheduling order, fact discovery is scheduled
to close on June 30, 2005 and expert discovery will close on December 14, 2005.
No trial date has been set.

PURDUE PHARMA L.P. ET AL. V IMPAX: THE OXYCODONE CASES

         On April 11, 2002, Purdue Pharma and related companies filed a
complaint in the U.S. District Court for the Southern District of New York
alleging that IMPAX's submission of ANDA No. 76-318 for 80 mg oxycodone tablets
infringes three patents owned by Purdue. The Purdue patents are U.S. Patent Nos.
5,508,042, 5,549,912 and 5,656,295; all directed to controlled release opioid
formulations. On September 19, 2002, Purdue filed a second Infringement
Complaint regarding our 40 mg oxycodone generic product. On October 9, 2002,
Purdue filed a third Infringement Complaint regarding our 10 mg and 20 mg
oxycodone generic products. We filed its answer and counterclaims in each case
on October 3, 2003. On November 25, 2003, Purdue submitted their reply to our
counterclaims. Purdue is seeking, among other things, a court order preventing
us from manufacturing, using or selling any drug product that infringes the
subject Purdue patents.

         Purdue previously sued Boehringer Ingelheim/Roxane, Endo and Teva on
the same patents. One or more of these defendants may resolve the invalidity
issues surrounding the Purdue patents prior to when our case goes to trial. The
Boehringer Ingelheim/Roxane suit is stayed. The Endo action was tried in June
2003. In January 2004, the judge in the Endo action ruled that the three patents
in suit, the same patents that Purdue has asserted against the Company, are
unenforceable because they were inequitably procured and enjoined their
enforcement. Purdue appealed that ruling to the Court of Appeals for the Federal
Circuit. We were granted Summary Judgment on January 10, 2005, dismissing
Purdue's charges of infringement and holding the patents to be unenforceable,
based on the Endo decision.

         The Company commenced shipping Oxycodone 80mg in March 2005.

         On June 7, 2005, the Court of Appeals for the Federal Circuit affirmed
the District Court's ruling that the patents in suit were unenforceable due to
inequitable conduct. Purdue has stated that they intend to file a Petition for
Re-hearing En Banc. If the Endo decision is ultimately reversed, and Purdue were
to prevail in litigation against us, we would be liable for Purdue's damages, up
to its lost profits from our infringing sales. If the infringement were found to
be willful, our damages could be increased by up to three times.

IMPAX V. AVENTIS PHARMACEUTICALS, INC.:  THE RILUZOLE CASE

         In June 2002, we filed suit against Aventis Pharmaceuticals, Inc. in
the U.S. District Court in Wilmington, Delaware, seeking a declaration that the
filing of an ANDA to engage in a commercial manufacture and/or sale of Riluzole



50 mg Tablets for treatment of patients with amyotrophic lateral scleroses (ALS)
does not infringe claims of Aventis' U.S. Patent No. 5,527,814 (`814 patent) and
a declaration that this patent is invalid.

         In response to our complaint, Aventis filed counterclaims for direct
infringement and inducement of infringement of the `814 patent. In December
2002, the district court granted Aventis' Motion for Preliminary Injunction and
enjoined us from infringing, contributory infringing, or inducing any other
person to infringe Claims 1, 4 or 5 of the `814 patent by selling, offering for
sale, distributing, marketing or exporting from the United States any
pharmaceutical product or compound containing riluzole or salt thereof for the
treatment of ALS.

         The trial was completed on October 30, 2003, and post-trial briefing
was completed in December 2003. On January 30, 2004, the court denied our Motion
for Summary Judgment on inequitable conduct and, on February 5, 2004, the court
denied our Motion for Summary Judgment on non-infringement of certain claims. In
September 2004, the court ruled the `814 patent is valid, enforceable and
infringed by our proposed generic riluzole product. On March 11, 2005, Aventis
submitted to the court a proposed form of final judgment in favor of Aventis,
reflecting the court's prior rulings that claims 1 through 5 of the `814 patent
are not invalid or unenforceable, and that our proposed manufacture and sale of
riluzole would induce infringement of claims 1 through 5 of the `814 patent. On
March 16, 2005, the Federal District Court entered final judgment. We filed a
Notice of Appeal on March 21, 2005.

         If we are not ultimately successful in proving invalidity or
unenforceability, there is a substantial likelihood that the court will enter a
permanent injunction enjoining us from marketing Riluzole 50 mg Tablets for the
treatment of ALS in the United States until the expiration of the `814 patent
(June 18, 2013). If we are ultimately successful in proving either defense, the
preliminary injunction would be set aside and the Company would be permitted to
market its Riluzole 50 mg Tablet product for the treatment of ALS in the United
States.

ABBOTT LABORATORIES V. IMPAX:  THE FENOFIBRATE TABLET CASES

         In January 2003, Abbott Laboratories and Fournier Industrie et Sante
and a related company filed suit against the Company in the U.S. District Court
in Wilmington, Delaware claiming that our submission of an ANDA for Fenofibrate




Tablets, 160 mg, constitutes infringement of two U.S. patents owned by Fournier
and exclusively licensed to Abbott, relating to Abbott's Tricor tablet product.

         In March 2003, Abbott and Fournier filed a second action against IMPAX
in the same court making the same claims against our 54 mg Fenofibrate Tablets.
These cases were consolidated in April 2003.

         In September 2003, Abbott and Fournier filed a third action against the
Company in the U.S. District Court in Wilmington, Delaware, claiming that our
submission of its ANDA for 54 mg and 160 mg Fenofibrate Tablets constitutes
infringement of a third patent recently issued to Fournier and exclusively
licensed to Abbott. This action was also consolidated with the two previously
consolidated actions in December 2003. In January 2004, Abbott and Fournier
filed a fourth action relating to our 54 mg and 160 mg Fenofibrate Tablets based
upon a claim of infringement of a fourth patent. The asserted patents are U.S.
Patent Nos. 6,652,881, 6,589,552, 6,277,405 and 6,074,670. All four cases were
consolidated in March 2004. This matter was consolidated for trial with the
Abbott Laboratories v. Teva Pharmaceuticals USA, Inc. matter, an action before
the same judge involving similar claims of patent infringement by Teva and
similar defenses.

         Fact and expert discovery in the consolidated cases closed in November
2004. A claim construction hearing was held on February 28, 2005. On March 7,
2005, the District Court dismissed U.S. Patent No. 6,074,670 from the lawsuit.
On March 18, 2005, we moved to amend and supplement its answer to assert
antitrust counterclaims. A Markman claims construction ruling issued on April
22, 2005.

         On May 6, 2005, the court issued a ruling on summary judgment and other
motions. The Court (1) denied our motion for a separate trial and to stay
discovery on the willful infringement claim; (2) granted IMPAX's motion for
partial summary judgment of non- infringement due to the lack of at least 20% by
weight of a hydrophilic polymer; (3) granted our motion for partial summary
judgment of non-infringement of U.S. Patent No. 6,074,670 (the motion having
been made before the March 7 dismissal). The Court also granted in part our
motion for partial summary judgment of non-infringement of U.S. Patent No.
6,652,881 and some claims of U.S. Patent No. 6,277,405 and U.S. Patent No.
6,589,552 insofar as Abbott claims infringement by the doctrine of equivalents,
but denied summary judgment as to literal infringement claims.

         At the pretrial conference held on May 9, 2005, the court permitted the
inequitable conduct defense to be added for trial, and stayed consideration of
the amendment to add the antitrust claim. On May 20, 2005, Plaintiffs moved to
voluntarily dismiss the complaints and also the Company's and Teva's declaratory
judgment counterclaims for lack of subject matter jurisdiction based upon a
proposed covenant not to sue the defendants with respect to the patents-in-suit.
By agreement between the parties, the patent claims will be dismissed. The
Company's motion to supplement and amend its answers to assert antitrust
counterclaims remains pending.



ALZA CORPORATION V. IMPAX:  THE OXYBUTYNIN CASE

         On September 4, 2003, Alza Corporation ("Alza") filed a lawsuit against
IMPAX in the U.S. District Court for the Northern District of California
alleging patent infringement of one patent, U.S. Patent No. 6,124,355, related
to our filing of an ANDA for a generic version of Ditropan XL (Oxybutynin
Chloride) Tablets, 5 mg, 10 mg, and 15 mg. Alza seeks an injunction, a
declaration of infringement, attorney's fees and costs. On October 24, 2003, we
filed its Answer to the Complaint, which included defenses to the infringement
claim, and counterclaimed for patent non-infringement and invalidity. On March
11, 2005, the Court issued an order construing the claims of the patent in suit.
In so doing, the Court adopted the claim construction involving the same patent
that was issued on December 7, 2004, in Alza Corp. v. Mylan Labs. et al., Civil
Action No. 1:03CV61, which is currently pending in the United States District
Court for the Northern District of West Virginia. The litigation is ongoing.

         On October 24, 2003, we filed a lawsuit against Alza in the U.S.
District Court for the Northern District of California seeking a declaratory
judgment that four Alza patents relating to our filing of an ANDA for a generic
version of Ditropan XL (Oxybutynin Chloride) Tablets, 5 mg, 10 mg, and 15 mg are
invalid and/or not infringed by the commercial manufacture, use, offer for sale,
sale, or importation of our product. On November 17, 2003, Alza moved to dismiss
the Company's complaint for lack of subject matter jurisdiction based on Alza's
argument that there is no case or controversy between the parties with respect
to these four patents. On April 19, 2004, the Court denied Alza's motion. On May
18, 2004, the Court ordered the entry of a stipulation of dismissal based on a
covenant not to sue issued by Alza to the Company with respect to the four Alza
patents in that case.

SHIRE LABORATORIES INC. V IMPAX:   THE GENERIC ADDERALL XR CASE

         On December 29, 2003, Shire Laboratories, Inc., a subsidiary of Shire
Pharmaceuticals Group, PLC, filed a lawsuit against the Company in the U.S.
District Court for the District of Delaware alleging patent infringement on U.S.
Patent Nos. 6,322,819 and 6,605,300 related to filing of an ANDA to market a
generic version of Adderall XR 30 mg capsules. We filed its answer on January
20, 2004, denying infringement and contesting the validity of both patents.
Discovery in this matter is complete. A Markman claim construction ruling was
issued on February 9, 2005. The Parties submitted expert reports on March 16,
2005 for the issues on which they bear the burden of proof. Shire now concedes
that it is unable to prove literal infringement based upon the court's claim
construction. Rebuttal reports were due on April 6, 2005. On February 25, 2005,
we moved to amend its answer to allege inequitable conduct with respect to both
patents-in-suit, which motion was granted

         Shire filed a new suit against us on January 13, 2005, No. 05-20 (GMS),
asserting the same two patents as in the first suit. The second complaint
relates to an amendment to our ANDA in which we added 5 mg, 10 mg, 15 mg, 20 mg
and 25 mg dosage strengths. A scheduling conference took place on April 11,
2005, when it was decided that the two actions would be consolidated for trial.



Discovery in the second action is proceeding. The court has authorized the
Company to file a summary judgment brief on September 12, 2005, regarding (1)
non-infringement of U.S. Patent Nos. 6,322,819 and 6,605,300, and (2) no willful
infringement. Fact discovery in the second matter is to be completed by August
1, 2005. A seven-day bench trial is scheduled to begin on February 23, 2006.

BIOVAIL LABORATORIES INC. V IMPAX:   THE GENERIC WELLBUTRIN XL CASE

         On March 7, 2005, Biovail Laboratories Inc., a subsidiary of Biovail
Corporation, commenced patent litigation against us in the United States
District Court, Eastern District of Pennsylvania (Philadelphia), alleging patent
infringement on U.S. Patent No. 6,096,341 related to our filing for a generic
version of Wellbutrin XL 150 mg. The Company has submitted its ANDA filing with
the FDA under Paragraph IV of the Hatch-Waxman Amendments, stating that it
believes its generic versions of Wellbutrin XL 150 and 300 mg tablets do not
infringe Biovail's listed patents or that the listed patents are invalid or
unenforceable. In April 2005, Biovail amended its suit against the Company
relating to a subsequent filing of the 300 mg dosage strength asserting the same
patent as in the earlier complaint. On May 11, 2005, the Company filed its
answer to the amended complaint, which included defenses to the infringement
claim. Fact discovery is scheduled to close on December 2, 2005. No trial date
has been set.

Other Litigation

STATE OF CALIFORNIA V. IMPAX

         On August 7, 2003, IMPAX received an Accusation from the Department of
Justice, Bureau of Narcotic Enforcement, State of California ("BNE"), alleging
that we failed to maintain adequate controls to safeguard precursors from theft
or loss regarding our pseudoephedrine product in January 2003. We contested the
allegations in the Accusation and entered into discussions with the State of
California, Department of Justice, to bring resolution to this matter. The
Company has implemented a number of remedial measures aimed at improving the
security and accountability of precursor substances used by the Company and
regulated by the California Department of Justice, Bureau of Narcotic
Enforcement. In March 2004, following a theft of pseudoephedrine from our
facilities, the BNE filed an Amended Accusation, again alleging that the Company
failed to maintain adequate controls to safeguard precursors from theft or loss
regarding our pseudoephedrine product. In May 2004, a Notice of Hearing was
received from BNE, which set the hearing of this matter, should one be
necessary, for October 18 and October 19, 2004.

         On October 11, 2004 we entered into a Stipulation with the BNE
regarding our California Precursor Business Permit #201, applicable to the our
facility located at 31153 San Antonio Street, Hayward, California. Pursuant to
the Stipulation, Permit #201 is provisionally suspended, with such suspension
stayed, for a period of two (2) years, in which the Company must comply with the
terms and conditions of the Stipulation. The Stipulation provides: "Upon



successful completion of the terms of the Stipulation for the period of time in
which it is in effect, the Company's permit will be fully restored without
having been suspended."

         The Stipulation resolves both the original Accusation and the Amended
Accusation.

SOLVAY PHARMACEUTICALS V. IMPAX:  THE CREON CASE

         On April 11, 2003, Solvay Pharmaceuticals, Inc., manufacturer of the
Creon line pancreatic enzyme products, brought suit against the Company in the
U.S. District Court for the District of Minnesota claiming that we have engaged
in false advertising, unfair competition, and unfair trade practices under
federal and Minnesota law in connection with the Company's marketing and sale of
its Lipram products. The suit seeks actual and consequential damages, including
treble damages, attorneys' fees, injunctive relief and declaratory judgments
that would prohibit the substitution of Lipram for prescriptions of Creon. On
June 6, 2003, we filed a Motion for Dismissal of Plaintiff's Complaint, which
sought to dismiss each count of Solvay's complaint. On January 9, 2004, the U.S.
District Court issued a ruling on our Motion for Dismissal, dismissing two of
the counts set forth in the Complaint, including the count that sought a
declaratory judgment that Lipram may not lawfully be substituted for
prescriptions of Creon. On January 26, 2004, IMPAX filed its Answer to the
Complaint and Counterclaim alleging that Solvay wrongfully interfered with
IMPAX's business relationships. On February 17, 2004, Solvay filed its Reply to
our Counterclaim. Under the current scheduling order, the discovery deadline is
set for July 22, 2005, and a trial date is set for February 1, 2006. Discovery
is currently ongoing on this case. The Company believes it has defenses to
Solvay's allegations and intends to pursue these defenses vigorously.


SECURITIES LITIGATION

         In September 2004 and January 2005, the Company was served with several
complaints filed by shareholders in the Superior Court for Alameda County,
California, all of which have since been consolidated as case No. RG04176541,
purporting to state a derivative claim on behalf of the Company, as a nominal
defendant. The complaints assert claims against all of the Company's Directors
and David S. Doll and Cornel C. Spiegler, each of whom is an Officer or
Director, or both, of IMPAX, and allege that each sold shares of the Company's
common stock in June 2004 on the basis of material nonpublic information. The
complaints, asserting claims against these individuals under California
Corporations Code ss. 25402 and California's common law, seek treble damages,
imposition of a constructive trust on the individual defendants' profits,
attorneys fees and costs, and other relief as the court determines.

         Our Board of Directors has appointed a Special Litigation Committee
(SLC) of disinterested directors to investigate the merits of the allegations in
these complaints and to engage special counsel to assist in such investigation.
The actions have been stayed pending completion of the SLC's investigation and
report to the court. The SLC has completed its investigation and on April 22,
2005 issued its report, concluding that the allegations in the derivative



actions are without merit and that there is no likelihood that the defendants
would be found liable if the actions were to proceed and recommending that we
should seek to have the actions dismissed. The Company intends to file a motion
to dismiss the action based upon the SLC's investigation and report.

         In November and December 2004, IMPAX, all of its Directors, Cornel
Spiegler and David Doll were served with several class action complaints filed
in the United States District Court for the Northern District of California, all
of which have since been consolidated as case No. 04- 4808-JW. These actions,
brought on behalf of all purchasers of our stock between May 5 and November 3,
2004, allege that the Company and the individual defendants, in violation of the
antifraud provisions of the federal securities laws, artificially inflated the
market price of the stock during this period by filing false financial
statements for the first and second quarters of 2004, based upon the Company's
subsequent restatement of its results for those periods. Plaintiffs have
recently filed a consolidated amended complaint. The Company is currently
preparing a motion to dismiss the amended complaint for failure to state a claim
upon which relief can be granted, which motion is required to be filed by July
20, 2005.

LOUIS PICCONE V. IMPAX LABORATORIES. INC., an entity, and Larry Hsu, its
President, individually and in his official capacity, Superior Court of
California for the County of Alameda, Case No. HG04189310

         On February 9, 2005, Louis Piccone, a former Intellectual Property
attorney for the Company, sued for retaliation in violation of the California
Family Rights Act ("CFRA") and the Fair Employment and Housing Act ("FEHA"),
alleging denial of reinstatement and failure to provide medical leave, failure
to accommodate a disability, discrimination on account of a disability, wrongful
termination in violation of public policy, breach of contract terminable only
for good cause, breach of the implied covenant of good faith and fair dealing,
defamation, misrepresentation in violation of Labor Code Section 970, fraud, and
unfair business practices. The Company is in the process of responding to the
complaint. The Company intends to defend itself vigorously.

SECTION 1(KK):

         Offer Letter to Arthur Koch.

         Amendment dated March 16, 2005 to the Development License and Supply
Agreement between Wyeth and the Company.

         Amendment dated March 25, 2005 to the Strategic Alliance Agreement
dated June 27, 2001 between Teva Pharmaceuticals Curacao NV and the Company.