- -------------------------------------------------------------------------------


                  UNITED STATES SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C.  20549
                                   FORM 10-Q
    --------------------------------------------------------------


              [X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

               For the quarterly period ended June 30, 1999
                                    OR

              [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OR THE SECURITIES EXCHANGE ACT OF 1934
               For the transition period from _________to __________

                                Commission file number 1-9114

                                   MYLAN LABORATORIES INC.
                   (Exact Name of registrant as specified in its charter)

               Pennsylvania                               25-1211621
      (State or other jurisdiction of                  (I.R.S. Employer
       incorporation or organization)                   Identification No.)

               130 Seventh Street
              1030 Century Building
             Pittsburgh, Pennsylvania                         15222
        (Address of principal executive offices)            (Zip Code)

                                   412-232-0100
               (Registrant's telephone number, including area code)

                                 Not Applicable
            (Former name, former address and former fiscal year, if changed
             since last report)

Indicate by check mark whether the Registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding  twelve months (or for such shorter period that the Registrant was
required  to file  such  reports),  and  (2) has  been  subject  to such  filing
requirements for the past 90 days:

                           YES   X                            NO
                               -----                             -----

Indicate the number of shares  outstanding  of each of the  issuer's  classes of
common stock, as of the latest practicable date

                                                        Outstanding at
        Class of Common Stock                           August 11, 1999
        ---------------------                           ---------------
            $.50 par value                                129,186,122










              MYLAN LABORATORIES INC. AND SUBSIDIARIES


                               INDEX


                                                                     Page
                                                                    Number
                                                                    ------

PART I. FINANCIAL INFORMATION

        ITEM 1: Financial Statements

           Consolidated Statements of Earnings - Three
             Months Ended June 30, 1999 and 1998                       2

           Consolidated Balance Sheets - June 30, 1999
             and March 31, 1999                                        3

           Consolidated Statements of Cash Flows - Three
             Months Ended June 30, 1999 and 1998                       4

           Notes to Consolidated Financial Statements -
             Three Months Ended June 30, 1999                        5 - 9

        ITEM 2:       Management's Discussion and Analysis of
                      Financial Condition and Results of
                      Operations                                    10 - 16

        ITEM 3: Quantitative and Qualitative Disclosures
                      About Market Risk                               16

PART II. OTHER INFORMATION

        ITEM 1: Legal Proceedings                                   16 - 18

        ITEM 6: Exhibits and Reports on Form 8-K                      18


SIGNATURES                                                            18







                    MYLAN LABORATORIES INC. AND SUBSIDIARIES
                       CONSOLIDATED STATEMENTS OF EARNINGS
                FOR THE THREE MONTHS ENDED JUNE 30, 1999 AND 1998
                     (In thousands except per share amounts)

                                    UNAUDITED



                                                        1999           1998
                                                        ----           ----

NET SALES                                             $177,095       $166,718
COST AND EXPENSES:
  Cost of Sales                                         80,848         81,564
  Research and Development                              11,791         14,084
  Selling and Administrative                            38,114         25,009
                                                      --------       --------
                                                       130,753        120,657
EQUITY IN EARNINGS OF SOMERSET                            (82)          2,350
OTHER INCOME                                             3,859          4,034
                                                      --------       --------
EARNINGS BEFORE INCOME TAXES                            50,119         52,445
INCOME TAXES                                            18,166         18,263
                                                      --------       --------
NET EARNINGS                                          $ 31,953       $ 34,182
                                                      ========       ========
EARNINGS PER COMMON SHARE:
 Basic                                                $    .25       $    .28
                                                      ========       ========
 Diluted                                              $    .25       $    .28
                                                      ========       ========
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
 Basic                                                 129,136        122,295
                                                      ========       ========
 Diluted                                               130,309        124,078
                                                      ========       ========



                       The Company has paid regular  quarterly cash dividends of
$.04 per share since October 1995.



                 See Notes to Consolidated Financial Statements

                                       -2-






                    MYLAN LABORATORIES INC. AND SUBSIDIARIES
                           CONSOLIDATED BALANCE SHEETS
                             (Amounts in thousands)

                                     ASSETS

                                                          June 30,     March 31,
                                                              1999          1999
                                                         Unaudited       Audited
Current Assets:
    Cash and cash equivalents                           $  201,798    $  189,849
    Marketable securities                                   87,639        69,872
    Accounts receivable - net                              151,224       148,896
    Inventories:
        Raw materials                                       62,057        57,414
        Work in process                                     23,200        20,813
        Finished goods                                      53,021        58,266
                                                        ----------    ----------
                                                           138,278       136,493
    Deferred income tax benefit                             21,721        18,199
    Other current assets                                    15,593        19,650
                                                        ----------    ----------
           Total Current Assets                            616,253       582,959


Property, Plant and Equipment - at cost                    250,229       244,793
    Less accumulated depreciation                           93,863        90,157
                                                        ----------    ----------
                                                           156,366       154,636
Investment in and Advances to Somerset                      33,925        34,114
Intangible Assets-net of accumulated amortization          335,194       336,003
Other Assets                                                99,368        98,949
                                                        ----------    ----------
Total Assets                                            $1,241,106    $1,206,661
                                                        ==========    ==========

                      LIABILITIES AND SHAREHOLDERS' EQUITY

Current Liabilities:
    Trade accounts payable                                $   19,649  $   12,142
    Current portion of long-term obligations                  14,850      16,941
    Income taxes payable                                      16,942         821
    Other current liabilities                                 48,835      61,279
    Cash dividend payable                                      5,182       5,178
                                                          ----------  ----------
           Total Current Liabilities                         105,458      96,361
Long-Term Obligations                                         24,771      26,827
Deferred Income Tax Liability                                 22,765      23,568
Shareholders' Equity:
    Preferred stock, par value $.50 per share, authorized
    5,000,000 shares, issued and outstanding - none             -           -
    Common stock, par value $.50 per share, authorized
    300,000,000 shares, issued 130,039,909 shares at
    June 30, 1999 and 129,968,514 shares at March 31, 1999    65,020      64,984
    Additional paid-in capital                               312,912     311,995
    Retained earnings                                        716,790     690,003
    Accumulated other comprehensive income                     1,572       1,105
                                                          ----------
                                                           1,096,294   1,068,087
    Less treasury stock - at cost, 888,578 shares at
     June 30, 1999 and March 31, 1999                          8,182       8,182
                                                          ----------  ----------
        Total Shareholders' Equity                         1,088,112   1,059,905
                                                          ----------  ----------
Total Liabilities and Shareholders' Equity                $1,241,106  $1,206,661
                                                          ==========  ==========




                 See Notes to Consolidated Financial Statements

                                       -3-





                    MYLAN LABORATORIES INC. AND SUBSIDIARIES
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                FOR THE THREE MONTHS ENDED JUNE 30, 1999 AND 1998
                             (Amounts in thousands)

                                    UNAUDITED


                                                              1999         1998
                                                              ----         ----
CASH FLOWS FROM OPERATING ACTIVITIES
    Net earnings                                          $ 31,953     $ 34,182
    Adjustments to reconcile net earnings to net
        cash provided from operating activities:
          Depreciation and amortization                      8,669        5,528
           Deferred income tax benefit                      (4,626)      (3,145)
           Equity in the loss(earnings) of Somerset             82       (2,350)
           Cash received from Somerset                         107          270
       Allowances on accounts receivable                    10,443        1,042
       Other noncash expense(income)                           996         (250)
        Changes in operating assets and liabilities:
           Accounts receivable                             (12,771)      (1,407)
           Inventories                                      (1,925)      (4,018)
           Trade accounts payable                            7,507        2,860
           Income taxes payable                             16,171       13,055
           Other operating assets and liabilities          (11,988)      (1,084)
                                                          --------     --------
Net cash provided from operating activities                 44,618       44,683

CASH FLOWS FROM INVESTING ACTIVITIES
    Additions to property, plant and equipment              (5,436)      (5,430)
    Increase in intangible and other assets                   (962)      (1,516)
    Proceeds from investment securities                     34,302        6,318
    Purchase of investment securities                      (51,351)      (5,782)
                                                          --------     --------
 Net cash used in investing activities                     (23,447)      (6,410)
CASH FLOWS FROM FINANCING ACTIVITIES
    Payments on long-term obligations                       (5,014)         (15)
    Cash dividends paid                                     (5,162)      (4,888)
  Proceeds from exercise of stock options                      954        1,985
                                                          --------     --------
Net cash used in financing activities                       (9,222)      (2,918)

Net Increase in Cash and Cash Equivalents                   11,949       35,355
Cash and cash equivalents - beginning of period            189,849      103,756
                                                          --------     --------
Cash and cash equivalents - end of period                 $201,798     $139,111
                                                          ========     ========
CASH PAID DURING THE PERIOD FOR:
    Interest                                              $    189     $      4
                                                          ========     ========
    Income Taxes                                          $  6,620     $  8,354
                                                          ========     ========


                 See Notes to Consolidated Financial Statements

                                       -4-






                    MYLAN LABORATORIES INC. AND SUBSIDIARIES
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               THREE MONTHS ENDED
                                  JUNE 30, 1999

                                    Unaudited

A.    In  the  opinion  of  management,  the  accompanying  unaudited  financial
      statements  contain all adjustments  (consisting of only normal  recurring
      accruals)  necessary  to present  fairly  the  financial  position  of the
      Company as of June 30, 1999 together  with the results of  operations  and
      cash  flows for the  interim  periods  ended June 30,  1999 and 1998.  The
      consolidated  results of  operations  for the three  months ended June 30,
      1999 and 1998 are not necessarily indicative of the results to be expected
      for the full year.

B.    These interim financial  statements should be read in conjunction with the
      consolidated  financial statements and notes thereto in the Company's 1999
      Annual Report and Report on Form 10-K.

C.    Diluted  earnings  per common  share is computed by dividing  net earnings
      available to common  shareholders  by the weighted  average  common shares
      outstanding  adjusted for the dilutive effect of options granted under the
      Company's stock option plans.  The effect of dilutive stock options on the
      weighted average common shares outstanding was 1,173,000 and 1,783,000 for
      the three months ended June 30, 1999 and 1998.

D.    Total  comprehensive  income for the three  months ended June 30, 1999 and
      1998 is as follows: (in thousands)



                                                            Three Months Ended
                                                                 June 30,
                                                            ------------------
                                                            1999         1998
                                                            ----         ----
  Net earnings                                            $31,953      $34,182
  Other comprehensive income, net of tax:
    Unrealized gain(loss) on marketable securities            502       (1,395)
    Adjustment for gains included in net earnings             (35)         (97)
                                                          -------      -------
  Comprehensive income                                    $32,420      $32,691
                                                          =======      =======


      Accumulated other comprehensive income, as reflected on the balance sheet,
      is comprised solely of the unrealized gain on marketable  securities,  net
      of income taxes.



                                       -5-






                    MYLAN LABORATORIES INC. AND SUBSIDIARIES
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               THREE MONTHS ENDED
                                  JUNE 30, 1999

                                    Unaudited

E.    The following  table presents the  comparative  operating  results for the
      Company's two primary operating segments: (in thousands)


                                             Three Months Ended
                                                  June 30,
                                             ------------------

                                            1999          1998
                                            ----          ----
  Generic Segment:
    Net Sales                              $151,937     $152,804
    Segment Profit                           59,217       52,143
  Branded Segment:
    Net Sales                              $ 25,158     $ 13,914
    Segment Profit                            1,701        2,060
  Corporate Expenses                       $(10,799)    $ (1,758)
  Consolidated:
    Net Sales                              $177,095     $166,718
    Pretax Earnings                        $ 50,119     $ 52,445

      Segment net sales  represents  sales to unrelated  third parties.  Segment
      profit   represents   segment  gross  profit  less  direct   research  and
      development,  sales and marketing and administrative  expenses.  Corporate
      expenses include legal costs, amortization of goodwill and other corporate
      administrative expenses offset by other income.

F.    A subsidiary of the Company is involved in a dispute relating to a license
      and supply  contract  for  nitroglycerin  transdermal  patches  which both
      parties  claim has been  breached by the other.  The other  company  seeks
      damages  in excess of $20  million.  The  dispute  is  subject  to binding
      arbitration  before a three  member  panel which  commenced in March 1999.
      Although  the  Company  believes  that the claims  against it are  without
      merit,  there can be no  assurance  that the Company  will prevail in this
      matter.

      The Company is  currently  involved in  negotiations  with a state  agency
      concerning  certain  contract  pricing  matters.  Management  believes the
      resolution of this matter will not have a material  adverse  effect on the
      Company's operations or its financial position.

                                       -6-






                    MYLAN LABORATORIES INC. AND SUBSIDIARIES
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               THREE MONTHS ENDED
                                  JUNE 30, 1999

                                    Unaudited

F.    (cont.) The Company benefitted from an agreement it had with Genpharm Inc.
      "Genpharm" relating to the sale of ranitidine HCl tablets by Novopharm
      Limited "Novopharm" under an agreement between Genpharm and Novopharm.
      Based on an independent audit, Genpharm initiated a lawsuit against
      Novopharm to resolve contract interpretation issues and collect any
      additional funds due.  In response to Genpharm's suit, Novopharm filed
      counterclaims against both Genpharm and the Company claiming damages of up
      to $60,000,000.  The Company believes the counterclaims against Genpharm
      and the Company are without merit and will vigorously defend its position.

      In June 1998,  the Company  filed suit in the Los Angeles  Superior  Court
      against  VivoRx  Inc.  "VI",  VivoRx  Diabetes,  Inc.  "VDI"  and  certain
      directors.  The Company's suit alleges the defendants  have been guilty of
      fraud,  mismanagement,  abuse of authority,  unfairness to the Company and
      other  shareholders  and have wasted and misapplied the property of VI and
      VDI. In March 1999, VI, VDI and certain  directors  filed an answer to and
      cross-complaint in Los Angeles Superior Court against the Company.

      The cross-complaint alleges negligence,  misrepresentation,  fraud, breach
      of contract, and tortuous inducement of breach of fiduciary duty. The suit
      seeks unspecified  compensatory and punitive damages.  With respect to the
      cross-complaint the Company believes the suit is without merit and intends
      to vigorously defend its position.

      As part of the  litigation  involving  VI and related  companies,  in June
      1998,  the Company  filed suit in the Los Angeles  Superior  Court against
      American Bioscience,  Inc. "ABI", American  Pharmaceutical  Partners, Inc.
      "APP" and certain directors and officers. The Company's suit seeks various
      equitable  remedies,  including  but  not  limited  to,  appointment  of a
      receiver over and  dissolution of ABI and APP,  injunctive  relief to stop
      the   misappropriation  of  the  Company's  research  funding  and  equity
      investment  and the  misappropriation  of assets  and  personnel.  The Los
      Angeles Superior Court issued a preliminary  injunction order which, among
      other things,  prohibits the defendants from  transferring or disposing of
      funds,  assets,  technology or property  without the Company's  consent or
      commingling assets, property, technology or personnel with those of VI. In
      June 1999, the defendants filed an answer to and  cross-complaint  against
      the Company.  The  cross-complaint  alleges violations of California State
      laws,
                                       -7-







                    MYLAN LABORATORIES INC. AND SUBSIDIARIES
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               THREE MONTHS ENDED
                                  JUNE 30, 1999

                                    Unaudited

F.    (cont.)  interference with contractual  relations and prospective economic
      advantage,   fraud,   slander,   libel   and   other   allegations.    The
      cross-complainants seek unspecified compensatory and punitive damages. The
      Company  believes the  cross-complaints  are without  merit and intends to
      vigorously defend its position.

      On December 22, 1998,  the Federal  Trade  Commission  "FTC" filed suit in
      U.S.  District  Court for the District of Columbia "the Court" against the
      Company.  The FTC's complaint  alleges the Company engaged in restraint of
      trade,   monopolization,   attempted   monopolization  and  conspiracy  to
      monopolize,  arising out of certain agreements involving the supply of raw
      materials  used to  manufacture  two drugs.  The FTC also sued in the same
      case the foreign  supplier of the raw  materials,  the  supplier's  parent
      company  and  its  United  States  distributor.  Under  the  terms  of the
      agreements  related  to these raw  materials,  the  Company  has agreed to
      indemnify these parties.

      The Company is a party to other suits involving the Attorneys General from
      33 states and more than 20  putative  class  actions  that allege the same
      conduct  alleged  in the FTC suit as well as alleged  violations  of state
      consumer  protection  laws.  A qui tam action was  commenced  by a private
      party  in the U.S.  District  Court  for the  District  of South  Carolina
      purportedly  on behalf of the United  States  alleging  violations  of the
      False Claims Act and other statues.

      The relief  sought by the FTC includes an  injunction  barring the Company
      from engaging in the challenged  conduct,  recision of certain  agreements
      and disgorgement in excess of $120,000,000.

      The states and private  parties seek similar  relief,  treble  damages and
      attorneys'  fees.  In  addition,  a class  action suit was filed  alleging
      violations of federal securities laws by the Company and certain directors
      and officers of the Company.  Without specifying a dollar amount, the suit
      seeks compensatory damages.



                                       -8-






                    MYLAN LABORATORIES INC. AND SUBSIDIARIES
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               THREE MONTHS ENDED
                                  JUNE 30, 1999

                                    Unaudited

F.    (cont.)  The  Company  had filed  motions  to dismiss  the FTC  complaint,
      significant  portions of the State  Attorneys  General  complaint  and the
      federal  securities  case.  In July 1999,  the Court denied the  Company's
      motion  to  dismiss  the FTC  complaint.  The  Company  has filed a motion
      requesting   the  Court  to  certify  its  ruling  with   respect  to  the
      jurisdictional issue for expedited appeal to the U.S.
      Court of Appeals for the District of Columbia.

      The  Court  granted  in part and  denied in part the  Company's  motion to
      dismiss portions of the State Attorneys  General  complaint.  In so doing,
      the Court  limited  certain  theories of recovery  asserted by the states.
      Some  States  have  filed a  motion  with  the  Court  requesting  that it
      reconsider  certain claims that were dismissed.  The Company's  motions to
      dismiss the federal  securities  case and various  private  actions remain
      pending.

      The Company believes that it has meritorious defenses to the claims in all
      remaining  suits and  intends to  vigorously  defend  them.  Although  the
      Company  believes it has  meritorious  defenses to the claims,  an adverse
      result  in  these  suits  could  have a  material  adverse  effect  on the
      Company's financial position and results of its operations.



                                       -9-






                    MYLAN LABORATORIES INC. AND SUBSIDIARIES

                         PART 1 - FINANCIAL INFORMATION
                         ------------------------------
ITEM 2 - MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
         OF OPERATIONS

Introduction
- ------------

      Net earnings for the quarter ended June 30, 1999 were  $31,953,000 or $.25
per share  compared to $34,182,000 or $.28 per share for the same quarter a year
ago.  While  sales and gross  profits  continue  to exceed  prior  year  levels,
increased  customer  credits and higher  operating  expenses  resulting from the
October 1998  Penederm  acquisition,  expansion of the  Company's  branded sales
force and continued increases in legal expenses resulted in relatively unchanged
operating income on a year-to-year comparison.

      In addition  to lower net  earnings,  earnings  per share was diluted as a
result of the issuance of additional  shares of common stock to  facilitate  the
Penederm acquisition.

      The following table presents the comparative operating results for the
Company's two primary operating segments: (dollars in millions)

                                                    Three Months Ended
                                                          June 30,

                                                1999     1998     % Change
                                                ----     ----     --------
Generic Segment:
      Net Sales                                $151.9   $152.8       -1%
      Gross Profit                               79.4     76.6        4%
      Segment Profit                             59.2     52.1       14%
Branded Segment:
      Net Sales                                $ 25.2   $ 13.9       81%
      Gross Profit                               16.8      8.6       95%
      Segment Profit                              1.7      2.1      -19%
Corporate Expenses                             $(10.8)  $ (1.8)
Consolidated:
      Net Sales                                $177.1   $166.7        6%
      Gross Profit                               96.2     85.2       13%
      Pretax Earnings                            50.1     52.4       -4%


                                      -10-






                    MYLAN LABORATORIES INC. AND SUBSIDIARIES

      The  Generic  Segment   includes  Mylan   Pharmaceuticals   Inc.  and  UDL
Laboratories.  The Branded  Segment  includes  Bertek  Pharmaceuticals  Inc. and
Penederm Inc.  Segment net sales  represents  sales to unrelated  third parties.
Segment  gross  profit  represents  segment  net  sales  less the  corresponding
corporate  wide  acquisition,  manufacturing,  warehousing  and  shipping  costs
associated with such sales.  Segment profit represents segment gross profit less
direct  research  and  development,   sales  and  marketing  and  administrative
expenses.  Corporate expenses include legal costs,  amortization of goodwill and
other corporate administrative expenses offset by other income.

Results of Operations
- ---------------------

Net Sales and Gross Profit

      Consolidated  gross profit  increased by 13% from $85.2 million  (51.1% of
net  sales)  last year to $96.2  million  (54.3% of net sales)  this  year.  The
increase resulted  primarily from the Branded Segment as a result of new product
additions  at Bertek  Pharmaceuticals  and the  addition  of Penederm in October
1998. Branded sales, which represented 14% of consolidated sales for the quarter
ended June 30, 1999  compared to 8% for the same  quarter a year ago,  generally
have higher gross profit  margins as a percentage of sales than does the generic
product line taken as a whole.

      While the Company's branded operations  continue to grow, the consolidated
operating  results remain  primarily  influenced by and reflective of the highly
volatile Generic Segment. Gross profit in the Generic Segment increased slightly
in the quarter  ended June 30, 1999 to $79.4  million from $76.6  million in the
June 30, 1998  quarter,  despite  slightly  lower net sales.  The  increase  was
primarily driven by price increases on approximately 25 products and to a lesser
extent the  elimination  of a profit  sharing  payment on two  products  and new
products  introduced since the quarter ended June 30, 1998. These increases were
substantially  offset by significant price deterioration on the top ten products
which accounted for  approximately 75% of gross profit in the quarter ended June
30, 1998. Price deterioration ranging from 7% to 56% reduced gross profit in the
quarter  ended June 30, 1999 by $21.9  million from the prior year same quarter.
Total generic volume in the current quarter remained relatively  consistent with
the quarter ended June 30, 1998 at 1.9 billion units.



                                      -11-






                    MYLAN LABORATORIES INC. AND SUBSIDIARIES

Research and Development

      Research and development  expenses were $11,791,000 or 7% of net sales for
the quarter ended June 30, 1999 compared to  $14,084,000  or 8% of net sales for
the same  period a year ago.  The current  period  includes  approximately  $2.1
million in charges for  dermatology  related  projects  incurred by Penederm and
charged to the Branded  Segment.  All other research and  development  costs are
incurred by Mylan  Pharmaceuticals  or Mylan  Technologies  Inc.  (patch related
projects)  and are  charged to the Generic  Segment.  Such costs for the current
quarter  were  substantially  lower  than a year ago due to the  termination  of
VivoRx funding and the stage of clinical and bio studies.

      The Company  expects  research and  development  expenses to remain at the
current  quarterly  level until certain ongoing  projects  progress to Phase III
clinical  stage or new  projects  are  initiated.  Additionally,  the Company is
actively pursuing joint  development  projects in an effort to broaden its scope
of capabilities in bringing to market new innovative products. Such arrangements
generally  provide  for  payments  by the Company  only upon the  attainment  of
certain  milestones.  While  such  arrangements  help to  reduce  the  Company's
financial risk for unsuccessful projects, attainment of milestones may result in
fluctuations in quarterly research and development expenses.

Selling and Administrative Expenses

      Selling and  administrative  expenses were $38,114,000 or 22% of net sales
for the quarter ended June 30, 1999 compared to  $25,009,000 or 15% of net sales
for the same quarter a year ago.

      Corporate  administrative  expenses were $14,575,000 this year compared to
$8,142,000   last  year.  The  increase  is   attributable  to  higher  goodwill
amortization  resulting from the Penederm  acquisition and higher legal expenses
primarily from the FTC litigation commenced in December 1998.

      Branded Segment selling and administrative  expenses were $13,026,000 this
year compared to $6,500,000 last year.  Approximately $4 million of the increase
results from the inclusion of Penederm in 1999. The remainder  relates primarily
to the expansion of the Bertek Pharmaceuticals sales force.

      Generic Segment selling and  administrative  expenses were $10,513,000 for
the quarter ended June 30, 1999, virtually unchanged from the same period a year
ago.



                                      -12-






                    MYLAN LABORATORIES INC. AND SUBSIDIARIES

      The Company  continually  evaluates  opportunities  to control selling and
administrative  expenses.  However,  the  Company  will  continue  to defend its
positions on various legal  matters and is committed to building an  appropriate
operational  infrastructure  for the  future,  including  the  expansion  of its
branded sales force.

      Equity in earnings of Somerset  was lower than a year ago  primarily  as a
result of generic  competition on Eldepryl(R),  the only commercial product sold
by  the   Company's   50%  owned   and   unconsolidated   subsidiary,   Somerset
Pharmaceuticals, Inc.

Income Taxes

      The  effective  tax rate for the  quarter  ended  June 30,  1999 was 36.2%
compared  to 34.8% for the same  period a year  ago.  The  primary  cause of the
change  relates  to  nondeductible  goodwill  amortization  resulting  from  the
acquisition  of  Penederm.  The  Company  expects  the  tax  rate to  remain  at
approximately the current level throughout fiscal year 2000.

Liquidity, Capital Resources and Financial Condition
- ----------------------------------------------------

      Working  capital   increased  from  $486,598,000  at  March  31,  1999  to
$510,795,000  at  June  30,  1999.  The  ratio  of  current  assets  to  current
liabilities  was 5.8 to 1 at June 30,  1999  compared  to 6.0 to 1 at March  31,
1999. Net cash provided from operating  activities was $44,618,000 for the three
months ended June 30, 1999 and primarily results from the Company's net earnings
and other  noncash  items.  The Company  continues  to invest a portion of these
additional  funds  in short  term  government  and  corporate  securities  which
accounts for the increase in cash used in investing activities.

      The Company  continues  to examine  opportunities  to expand its  business
through  product and company  acquisitions.  The  Company's  capital  resources,
financial  condition and results of operations  could be materially  impacted if
the Company were to complete such acquisitions.

      Although the Company believes it has meritorious defenses to the claims in
the FTC and  related  suits,  an  adverse  result in these  suits  could  have a
material adverse effect on the Company's business and financial  condition,  due
to the size of the FTC's  disgorgement  claim and the  threat of treble  damages
sought by the states,  as well as possible  damages in the other related  suits.
The Company  expects to incur  substantial  costs in  defending  itself in these
actions.


                                      -13-






                    MYLAN LABORATORIES INC. AND SUBSIDIARIES

Year 2000
- ---------

      The Company has completed a review of its critical information  technology
"IT" and non-IT operating systems for Year 2000 "Y2K" compliance. Y2K compliance
refers to the issue of systems and equipment  having date  sensitive  components
being  able to  recognize  the year  2000.  On the basis of this  review and the
processes described below, management believes that the costs of remediation and
potential losses related to Y2K issues are unlikely to have a material effect on
the Company's financial position, results of operations or cash flows.

      In assessing  potential Y2K issues, the Company has taken or is taking the
following steps to address its IT and non-IT operating systems:
      o    Formed a project  team across  functional  departments  to complete a
           review and identify nonconforming systems.
      o    Communicated   to  employees   throughout  the  Company  to  increase
           awareness of issues and activate the identification process.
      o    Identified critical IT and non-IT nonconforming operating systems and
           developed a plan to bring these systems into compliance.
      o    Established a testing program to ensure that such systems are
           compliant.
      o    Corresponded with customers, vendors, service suppliers and financial
           institutions to verify their readiness.
      o    Developed  contingency  plans where  practical in the event of system
           failures.

      Because of the continued growth of the Company over the last several years
and prior to the  formation of the project  team,  the Company  initiated  major
system   conversions  to  accommodate  the  physical   expansion  and  increased
transaction  volume  associated  with this growth.  Many factors were considered
during  the  selection  process.  While Y2K  compliance  was one of the  factors
considered, other factors were equally and significantly more important. Any new
systems selected were expected to be and are believed to be Y2K compliant.

      The Company has recently  completed the system  conversions  for all major
operating and  financial  systems.  All such systems have been  certified by the
vendor to by Y2K  compliant.  The Company has  substantially  completed  its own
testing on these systems and verified their Y2K compliance.

      Due to the recent  independent  upgrades and  replacements of its computer
systems to  accommodate  its  growth,  the  Company  has  neither  delayed,  nor
anticipates delaying,  any significant  information system projects prior to the
year 2000.



                                      -14-






                    MYLAN LABORATORIES INC. AND SUBSIDIARIES

      The project team continues to evaluate and update contingency plans. These
plans  are  developed  based on  correspondence  with  customers,  vendors,  raw
material suppliers,  service suppliers and financial  institutions regarding the
status of their Y2K  readiness  and the  results  of  testing  performed  on the
Company's internal systems. Contact is nearly complete with all of the Company's
significant  business partners.  As part of this process and due to the critical
nature of the  Company's  products,  the  Company  has also  initiated  steps to
monitor customers' orders and buying patterns. The Company has taken these steps
to  ensure  the  availability  of its  products  to  all  its  customers  as the
millennium approaches.

      While the project team continues to develop contingency plans for the more
likely scenarios of possible business  interruptions,  there can be no assurance
that the project team will identify and develop successful contingency plans for
all of the business interruptions that could possibly occur.

      Management believes that the Company has acted with appropriate  diligence
to address  potential Y2K issues.  The Company is,  however,  dependent on third
parties,  such  as its  customers,  vendors,  raw  material  suppliers,  service
suppliers which include energy,  water,  communication  and  transportation  and
financial  institutions,  to make  their own  systems  Y2K  compliant.  If these
entities fail to remedy their Y2K issues,  the Company could potentially  suffer
interruptions in its business operations.  These interruptions could potentially
delay  the  Company  in its  manufacturing  or  distribution  of some or all its
products for an  undeterminable  amount of time. In addition,  the Company could
experience the corruption of data in its own internal information systems.  Such
corruption could lead to temporary  interruptions  in certain isolated  business
operations.  These interruptions may or may not lead to an adverse impact on the
Company's overall business operations.

Forward-Looking Statements
- --------------------------

      The  statements  set  forth in this  Item 2 under  Results  of  Operations
concerning  the  manner in which the  Company  intends  to  conduct  its  future
operations  and potential  trends that may impact future  results of operations,
are forward-looking  statements.  The Company may be unable to realize its plans
and objectives due to various important factors,  including, but not limited to,
the  factors  described  under  Forward  Looking  Statements  in  Item  7 of the
Company's Annual Report on Form 10-K for the year ended March 31, 1999 and under
Year 2000 in this Item 2.


                                      -15-






                    MYLAN LABORATORIES INC. AND SUBSIDIARIES

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
- ------------------------------------------------------------------
      The  information  required by Item 3 has been  disclosed in Item 7A of the
Company's 1999 Annual Report on Form 10-K.  There has been no material change in
the disclosure regarding market risk.



                           PART II. OTHER INFORMATION
                           --------------------------
ITEM 1. LEGAL PROCEEDINGS
- -------------------------
      Since the date of the filing of the  Company's  Annual Report on Form 10-K
or the year  ended  March  31,  1999,  there  have  been no  material  new legal
proceedings   involving  the  Company  or  any  material  developments  to  such
proceedings, except as described below.

      As described  in the Form 10-K for the year ended March 31, 1999,  in June
1998, the Company filed a suit in Los Angeles Superior Court against VivoRx Inc.
"VI" and VivoRx Diabetes,  Inc. "VDI", alleging fraud,  mismanagement,  abuse of
authority,  waste and  misappropriation  of property.  As part of the litigation
involving VI and related companies,  in June 1998, the Company filed suit in the
Los Angeles Superior Court against  American  Bioscience,  Inc. "ABI",  American
Pharmaceutical  Partners,  Inc.  "APP" and certain  directors and officers.  The
Company's suit seeks various equitable  remedies,  including but not limited to,
appointment of a receiver over and dissolution of ABI and APP, injunctive relief
to stop the  misappropriation  of the  Company's  research  funding  and  equity
investment and the  misappropriation  of assets and  personnel.  The Los Angeles
Superior Court issued a preliminary  injunction order which, among other things,
prohibits  the  defendants  from  transferring  or disposing  of funds,  assets,
technology or property  without the  Company's  consent or  commingling  assets,
property, technology or personnel with those of VI. In June 1999, the defendants
filed an answer to and cross-complaint  against the Company. The cross-complaint
alleges  violations  of California  State laws,  interference  with  contractual
relations and prospective economic advantage,  fraud,  slander,  libel and other
allegations.  The cross-complainants seek unspecified  compensatory and punitive
damages. The Company believes the cross-complaints are without merit and intends
to vigorously defend its position.



                                      -16-






                    MYLAN LABORATORIES INC. AND SUBSIDIARIES

      As  described  in the Form  10-K for the year  ended  March 31,  1999,  in
December 1998, the Federal Trade  Commission  "FTC" filed suit in U.S.  District
Court for the District of Columbia  "the Court"  against the Company.  The FTC's
complaint  alleges the Company  engaged in restraint  of trade,  monopolization,
attempted  monopolization  and conspiracy to monopolize,  arising out of certain
agreements  involving the supply of raw materials used to manufacture two drugs.
The FTC also sued in the same case the foreign  supplier  of the raw  materials,
the supplier's parent company and its United States distributor. Under the terms
of the  agreements  related to these raw  materials,  the  Company has agreed to
indemnify these parties.

      The Company is also a party to other suits involving the Attorneys General
from 33 states and more than 20  putative  class  actions  that  allege the same
conduct alleged in the FTC suit as well as alleged  violations of state consumer
protection  laws. A qui tam action was  commenced by a private party in the U.S.
District Court for the District of South  Carolina  purportedly on behalf of the
United States alleging violations of the False Claims Act and other statues. The
relief  sought by the FTC  includes  an  injunction  barring  the  Company  from
engaging  in  the  challenged  conduct,   recision  of  certain  agreements  and
disgorgement  in excess of  $120,000,000.  The states and private  parties  seek
similar relief,  treble damages and attorneys' fees. In addition, a class action
suit was filed alleging violations of federal securities laws by the Company and
certain  directors  and  officers of the  Company.  Without  specifying a dollar
amount, the suit seeks compensatory damages.

      The Company had filed  motions to dismiss the FTC  complaint,  significant
portions of the State  Attorneys  General  complaint and the federal  securities
case.  In July 1999,  the Court denied the  Company's  motion to dismiss the FTC
complaint.  The Company has filed a motion  requesting  the Court to certify its
ruling with respect to the jurisdictional issue for expedited appeal to the U.S.
Court of Appeals for the District of Columbia.

      The  Court  granted  in part and  denied in part the  Company's  motion to
dismiss  portions of the State Attorneys  General  complaint.  In so doing,  the
Court limited certain theories of recovery  asserted by the states.  Some States
have filed a motion with the Court requesting that it reconsider  certain claims
that were  dismissed.  The Company's  motions to dismiss the federal  securities
case, along with various private actions, remain pending.


                                      -17-






                    MYLAN LABORATORIES INC. AND SUBSIDIARIES

      The Company believes that it has meritorious defenses to the claims in all
FTC and related  suits and  intends to  vigorously  defend  them.  Although  the
Company believes it has meritorious defenses to the claims, an adverse result in
these  suits could have a material  adverse  effect on the  Company's  financial
position and results of its operations.

      The  Company is  involved  in various  other  legal  proceedings  that are
considered  normal to its  business.  While it is not  feasible  to predict  the
ultimate outcome of such  proceedings,  it is the opinion of management that the
outcome of these suits will not have a material  adverse effect on the Company's
operations, financial position, or liquidity.

ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K
- ----------------------------------------
      (a)      Exhibit 27 - Financial Data Schedule
      (b)      Reports  on Form 8-K - There  were no  reports  on Form 8-K filed
               during the three months ended June 30, 1999.

                                   SIGNATURES
                                   ----------
      Pursuant to the  requirements of the Securities  Exchange Act of 1934, the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned thereunto duly authorized.


                                             Mylan Laboratories Inc.
                                                  (Registrant)


DATE   08/16/99                          /s/  Milan Puskar
     ------------------------            ------------------------
                                         Milan Puskar
                                         Chairman of the Board, Chief
                                         Executive Officer and President
                                         (Principal executive officer)


DATE   08/16/99                          /s/  Donald C. Schilling
     ------------------------            -------------------------
                                         Donald C. Schilling
                                         Vice President of Finance
                                         (Principal financial officer)

                                      -18-