Exhibit 10.5 SECOND AMENDMENT TO A CREDIT AGREEMENT Second Amendment (this "Amendment"), dated as of August 2, 1996 among American Home Food Products, Inc., Sherwood Medical Company, A.H. Robins Company, Incorporated (each, a "Subsidiary Borrower"), American Home Products Corporation (the "Company", and together with the Subsidiary Borrowers, the "Borrowers"), the lending institutions party to the A Credit Agreement referred to below (the "Banks") and The Chase Manhattan Bank, as Agent (in such capacity, the "Agent"). All capitalized terms used herein and not otherwise defined shall have the respective meanings provided such terms in the A Credit Agreement referred to below. W I T N E S S E T H : WHEREAS, the Borrowers, the Banks and the Agent are parties to a Credit Agreement, dated as of September 9, 1994, (the "A Credit Agreement"); WHEREAS, the parties hereto wish to amend the A Credit Agreement as herein provided; NOW THEREFORE, it is agreed: 1. AC Acquisition Holding Company is hereby added as a Subsidiary Borrower, with all references in the Credit Documents to Subsidiary Borrower and/or Subsidiary Borrowers to include such company. 2. The first recital of the A Credit Agreement is hereby amended by deleting the amount "$4,000,000,000" in its entirety and inserting in lieu thereof the amount "$3,000,000,000 (as the same may be increased pursuant to subsection 2.5(c) hereof)". 3. Section 1.1 of the A Credit Agreement is hereby amended by deleting the definition of "Applicable Margin" in its entirety and inserting in lieu thereof the following new definition: "Applicable Margin": a percentage equal to, (x) for Alternate Base Rate Loans, 0%, (y) for C/D Rate Loans, .305% and (z) for Eurodollar Rate Loans, .180%. 4. Section 1.1 of the A Credit Agreement is hereby amended by deleting the definition of "Facility Fee Percentage" in its entirety and inserting in lieu thereof the following definition: ""Facility Fee Percentage": a percentage equal to .045%." 5. Section 1.1 of the A Credit Agreement is hereby amended by deleting clause (a) of the definition of "Termination Date" in its entirety and inserting in lieu thereof "(a) August 1, 1997 (as such date may be extended in accordance with the provisions of subsection 2.19)and ". 6. Section 1.1 of the A Credit Agreement is hereby amended by adding the following definitions in appropriate alphabetical order: "Additional Lenders": as defined in subsection 2.5(c). "B Commitments": as defined in subsection 2.5(c). 7. Section 2.5 of the Credit Agreement is hereby amended by (x) deleting clause (b) thereof in its entirety and by substituting therefore the following: "(b)" Subject to the provisions of Section 2.5(c), the Commitments once terminated or reduced pursuant to subsection 2.5(a) may not be reinstated." and (y) adding a new subsection 2.5(c) to read: "(c) The Company may from time to time, by notice to the Agent (which shall promptly deliver a copy to each of the Lenders), request that the Commitments be increased (regardless of whether the Commitments or the B Commitments have theretofore been reduced) by an amount that is not less than $100,000,000 and will not result in the Commitments under this Agreement plus the Commitments under and as defined in the B Credit Agreement (the "B Commitments") exceeding $8,000,000,000. Each such notice shall set forth the requested amount of the increase in the Commitments and the B Commitments and the date (which date shall be a Business Day) on which such increase is to become effective (which shall be not fewer than 20 days after the date of such notice), and shall offer some or all Lenders the opportunity to increase their Commitments. Each Lender (as determined by the Company, in its sole discretion) that has received such request shall, by notice to the Company and the Agent given not more than 10 Business Days after the date of the Company's notice, either agree to increase its Commitment by all or a portion of the offered amount or decline to increase its Commitment (and any Lender that does not deliver such a notice within such period of 10 Business Days shall be deemed to have declined to increase its Commitment). In the event that, on the 10th Business Day after the Company shall have delivered a notice pursuant to the first sentence of this paragraph, the requested Lenders shall have agreed pursuant to the preceding sentence to increase their Commitments by an aggregate amount less than the increase in the Commitments requested by the Company, the Company shall have the right to arrange for one or more banks or other financial institutions (any such bank or other financial institution being called an "Additional Lender"), which may include any Lender, to extend Commitments or increase their existing Commitments in an aggregate amount equal to the unsubscribed amount, provided that each Additional Lender, if not already a Lender hereunder, shall be subject to the approval of the Agent (which approval shall not be unreasonably withheld) and shall execute a joinder agreement reasonably satisfactory to the Agent, pursuant to which it agrees to be bound by the terms of this Agreement as a Lender hereunder. If (and only if) Lenders (including Additional Lenders) shall have agreed to increase their Commitments or to extend new Commitments in an aggregate amount not less than $100,000,000, such increases and such new Commitments shall become effective on the date specified in the notice delivered by the Company pursuant to the first sentence of this subsection; provided that the Company may elect not to so increase the Commitments in the event that the amount of the increase approved by such Lenders is less than the amount initially requested by the Company." 8. In order to induce the Agent and the Banks to enter into this Amendment, the Borrowers hereby represent and warrant that (x) no Default or Event of Default exists on the Second Amendment Effective Date (as defined herein) both before and after giving effect to this Amendment and (y) all of the representations and warranties contained in the Credit Documents shall be true and correct in all material respects on the Second Amendment Effective Date both before and after giving effect to this Amendment with the same effect as though such representations and warranties had been made on and as of the Second Amendment Effective Date (it being understood that any representation or warranty made as of a specific date shall be true and correct in all material respects as of such specific date). 9. This Amendment is limited as specified and shall not constitute a modification, acceptance or waiver of any other provision of the A Credit Agreement or any other Credit Document. 10. This Amendment may be executed in any number of counterparts and by the different parties hereto on separate counterparts, each of which counterparts when executed and delivered shall be an original, but all of which shall together constitute one and the same instrument. A complete set of counterparts shall be lodged with the Company and the Agent. 11. This Amendment and the rights and obligations of the parties hereunder shall be construed in accordance with and governed by the law of the State of New York. 12. Notwithstanding anything to the contrary contained in the A Credit Agreement or this Amendment, for purposes of this Amendment "Banks" shall mean each of the lending institutions who shall have delivered (including by way of telecopier) by July 30, 1996 (or such later date as the Agent and the Company shall agree) a signed copy hereof to the Agent as provided in Section 8.2 of the A Credit Agreement that has been accepted by the Company. 13. As of the Second Amendment Effective Date, (v) Schedule I to the A Credit Agreement shall be revised to read as set forth on Annex I hereto, (w) Schedule II to the A Credit Agreement shall be revised by the Agent to give effect to such revised Schedule I, (x) the Banks shall constitute all the Lenders and no other entity that had been a Lender will continue to be a Lender, (y) either (A) all amounts owing to Lenders prior to July 30, 1996 who are not Banks (the "Former Lenders") shall be paid to such Former Lenders or (B) such Former Lenders shall assign their Commitments to one or more Banks and (z) no such Former Lender will continue to be a Lender. 14. This Amendment shall become effective as of the date hereof (the "Second Amendment Effective Date") on the date upon which (x) each of the Borrowers, the Agent and Banks (as defined in paragraph 12 hereto) with Commitments as set forth on Annex I hereto aggregating $3,000,000,000 shall have signed a copy hereof (whether the same or different copies) and shall have delivered (including by way of telecopier) the same to the Agent as provided in Section 8.2 of the A Credit Agreement and (y) the Second Amendment to the B Credit Agreement, dated as of the date hereof, has become effective. 15. From and after the Second Amendment Effective Date, all references in the A Credit Agreement and each of the other A Credit Documents to the A Credit Agreement shall be deemed to be references to the A Credit Agreement after giving effect to this Amendment. IN WITNESS WHEREOF, each of the parties hereto has caused a counterpart of this Amendment to be duly executed and delivered as of the date first above written. AMERICAN HOME PRODUCTS CORPORATION By:_______________________________ Title: Vice President - Finance AMERICAN HOME FOOD PRODUCTS, INC. By: Title: Vice President SHERWOOD MEDICAL COMPANY By: Title: Vice President A. H. ROBINS COMPANY, INCORPORATED By:_______________________________ Title: Vice President AC ACQUISITION HOLDING COMPANY By:___________________________________ Title: Vice President and Treasurer ANNEX I Schedule I COMMITMENTS Bank Commitment $ TOTAL $3,000,000,000 ABN AMRO BANK N.V., NEW YORK BRANCH By:_____________________________ Title: Vice President By:_____________________________ Title: Assistant Vice President BANCA NAZIONALE DEL LAVORO S.p.A. NEW YORK BRANCH By:_____________________________ Title: First Vice President By:_____________________________ Title: Vice President BANCA COMMERCIALE ITALIANA NEW YORK BRANCH By:__________________________________ Title: Vice President By:__________________________________ Title: Assistant Vice President BANK OF AMERICA NT & SA By:_____________________________ Title: Vice President BANK OF MONTREAL By:_____________________________ Title: THE BANK OF NOVA SCOTIA By:_____________________________ Title: THE BANK OF TOKYO-MITSUBISHI, LTD. NEW YORK BRANCH By:_____________________________ Title: Vice President BANQUE NATIONALE DE PARIS By:____________________________________ By:____________________________________ BANQUE PARIBAS By:_____________________________ Title: By:_____________________________ Title: BAYERISCHE LANDESBANK GIROZENTRALE, NEW YORK BRANCH By:_____________________________ Title: By:_____________________________ Title: BAYERISCHE VEREINSBANK AG, NEW YORK BRANCH By:_____________________________ Title: By:_____________________________ Title: THE BOATMEN'S NATIONAL BANK OF ST. LOUIS By:_____________________________ Title: CANADIAN IMPERIAL BANK OF COMMERCE, NEW YORK AGENCY By:__________________________________ Title: CARIPLO - CASSA DI RISPARMIO DELLE PROVINCIE LOMBARDE SPA GRAND CAYMAN BRANCH By:_____________________________ Title: Vice President By:_____________________________ Title: SVP & General Manager CITIBANK, N.A. By:_____________________________ Title: COMMERZBANK AKTIENGESELLSCHAFT New York and/or Grand Cayman Branches By:__________________________________ Title: By:__________________________________ Title THE CHASE MANHATTAN BANK By:__________________________________ Title: Vice President CORESTATES BANK, N.A. By:_____________________________ Title: Vice President CRESTAR BANK By:__________________________________ Title: Senior Vice President THE DAI-ICHI KANGYO BANK LTD. By:__________________________________ Title: Assistant Vice President DEUTSCHE BANK AG, NEW YORK AND/OR CAYMAN ISLANDS BRANCHES By:_____________________________ Title: By:_____________________________ Title: THE FIRST NATIONAL BANK OF CHICAGO By:_____________________________ Title: FIRST UNION NATIONAL BANK By:_____________________________ Title: FIRST NATIONAL BANK By:_____________________________ Title: Vice President ISTITUTO BANCARIO SAN PAOLO DI TORINA SPA - NEW YORK LIMITED BRANCH By:___________________________________ Title: MELLON BANK, N.A. By:_____________________________ Title: MIDLAND BANK PLC, NEW YORK BRANCH By:__________________________________ Title: Authorized Signatory THE MITSUI TRUST AND BANKING COMPANY, LIMITED - NEW YORK BRANCH By:________________________________ Title: Vice President & Manager MORGAN GUARANTY TRUST COMPANY OF NEW YORK By:_____________________________ Title: Vice President NATIONAL WESTMINSTER BANK PLC By:_____________________________ Title: Vice President NORDDEUTSCHE LANDESBANK GIROZENTRALE, NEW YORK BRANCH AND/OR CAYMAN ISLANDS BRANCH By:_____________________________ Title: Senior Vice President By:_____________________________ Title: Vice President THE NORINCHUKIN BANK, NEW YORK BRANCH By:_____________________________ Title: General Manager PNC BANK, NATIONAL ASSOCIATION By:_____________________________ Title: Vice President COOPERATIVE CENTRALE RAIFFEISEN - BOERENLEENBANK, B.A., "RABOBANK NEDERLAND" By:__________________________________ Vice President By:__________________________________ Vice President, Manager ROYAL BANK OF CANADA GRAND CAYMAN BRANCH By:_____________________________ Title: Senior Manager THE SAKURA BANK, LIMITED By:__________________________________ Title: Vice President & Manager THE SANWA BANK LTD, NEW YORK BRANCH By:____________________________________ Title: Vice President & Area Manager STANDARD CHARTERED BANK By:__________________________________ Title: Assistant Vice President SWISS BANK CORPORATION, NEW YORK BRANCH By:____________________________________ Title: Associate Director Banking Finance Support, N.A. By:___________________________________ Title: Associate Director Credit Risk Mgmt. THE BANK OF NEW YORK By:__________________________________ Title: Vice President THE FUJI BANK, LIMITED New York Branch By:__________________________________ Title: Senior Vice President THE INDUSTRIAL BANK OF JAPAN LIMITED By:__________________________________ Title: Senior Vice President THE MITSUBISHI TRUST AND BANKING CORPORATION By:__________________________________ Title: Senior Vice President THE NORTHERN TRUST COMPANY By:__________________________________ Title: Vice President THE SUMITOMO BANK, LIMITED, NEW YORK BRANCH By:__________________________________ Title: Joint General Manager THE SUMITOMO TRUST & BANKING CO., LTD. New York Branch By:__________________________________ Title: Senior Vice President Manager, Corporate Finance Dept. THE TOKAI BANK, LIMITED NEW YORK BRANCH By:_____________________________ Title: Vice President TORONTO DOMINION (NEW YORK), INC. By:_____________________________ Title: Vice President THE TOYO TRUST & BANKING CO., LTD. NEW YORK BRANCH By:_____________________________ Title: Vice President WACHOVIA BANK OF GEORGIA, N.A. By:_____________________________ Title: Vice President WESTPAC BANKING CORPORATION By:__________________________________ Title: Assistant Vice President YASUDA TRUST & BANKING By:__________________________________ Title: First Vice President