BARR LABORATORIES INC
S-3/A, 2000-12-11
PHARMACEUTICAL PREPARATIONS
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<PAGE>   1


   AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON DECEMBER 11, 2000


                                                      REGISTRATION NO. 333-45824
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                            ------------------------


                                AMENDMENT NO. 2

                                       TO

                                    FORM S-3
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
                            ------------------------

                            BARR LABORATORIES, INC.
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)

<TABLE>
<S>                                 <C>
             NEW YORK                           22-1927534
 (STATE OR OTHER JURISDICTION OF             (I.R.S. EMPLOYER
  INCORPORATION OR ORGANIZATION)           IDENTIFICATION NO.)
</TABLE>

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

                          2 QUAKER ROAD, PO BOX D 2900
                          POMONA, NEW YORK 10970-0519

                                 (845) 362-1100

                         (ADDRESS AND TELEPHONE NUMBER
                  OF REGISTRANT'S PRINCIPAL EXECUTIVE OFFICES)
                            ------------------------

                                 MARTIN ZEIGER
                   SENIOR VICE PRESIDENT AND GENERAL COUNSEL
                            BARR LABORATORIES, INC.
                          2 QUAKER ROAD, PO BOX D 2900
                             POMONA, NY 10970-0519

                                 (845) 362-1100

           (NAME, ADDRESS AND TELEPHONE NUMBER OF AGENT FOR SERVICE)
                            ------------------------

                          COPIES OF COMMUNICATIONS TO:

<TABLE>
<S>                                 <C>
         M. FINLEY MAXSON                    JONATHAN I. MARK
         WINSTON & STRAWN                CAHILL GORDON & REINDEL
       35 WEST WACKER DRIVE                   80 PINE STREET
     CHICAGO, ILLINOIS 60601             NEW YORK, NEW YORK 10005
          (312) 558-5600                      (212) 701-3000
</TABLE>

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

    APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC:  As soon as
practicable after this Registration Statement becomes effective.
                            ------------------------

    If the only securities being registered on this Form are being offered
pursuant to dividend or interest reinvestment plans, please check the following
box. [ ]

    If any of the securities being registered on this Form are to be offered on
a delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, other than securities offered only in connection with dividend or interest
reinvestment plans, check the following box. [ ]

    If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, check the following box and
list the Securities Act registration statement number of the earlier effective
registration statement for the same offering. [ ]

    If this Form is a post-effective amendment filed pursuant to Rule 462(c)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. [ ]

    If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box. [ ]
                            ------------------------

    THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT UNDER THE
SECURITIES ACT OF 1933 ON SUCH DATE OR DATES AS MAY BE NECESSARY TO DELAY ITS
EFFECTIVE DATE UNTIL THE REGISTRANT SHALL FILE A FURTHER AMENDMENT WHICH
SPECIFICALLY STATES THAT THIS REGISTRATION STATEMENT SHALL THEREAFTER BECOME
EFFECTIVE IN ACCORDANCE WITH THE PROVISIONS OF SECTION 8(a) OF THE SECURITIES
ACT OF 1933 OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME EFFECTIVE ON SUCH
DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(a), MAY DETERMINE.

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
<PAGE>   2

      THE INFORMATION IN THIS PROSPECTUS IS NOT COMPLETE AND MAY BE CHANGED. WE
      MAY NOT SELL THESE SECURITIES UNTIL THE REGISTRATION STATEMENT FILED WITH
      THE SECURITIES AND EXCHANGE COMMISSION IS EFFECTIVE. THIS PROSPECTUS IS
      NOT AN OFFER TO SELL THESE SECURITIES AND IT IS NOT SOLICITING AN OFFER TO
      BUY THESE SECURITIES IN ANY STATE WHERE THE OFFER OR SALE IS NOT
      PERMITTED.


December 11, 2000

Subject to Completion

                                3,500,000 SHARES

                                  [BARR LOGO]
                                  COMMON STOCK
                         ------------------------------

     Barr Laboratories, Inc. is offering 500,000 shares of common stock and
Sherman Delaware, Inc., the selling shareholder, is offering 3,000,000 shares of
our common stock in a firmly underwritten offering. We will not receive any
proceeds from the sale of shares of common stock by Sherman Delaware.
                         ------------------------------


     Our common stock is listed on the New York Stock Exchange under the symbol
"BRL." The last reported sale price of our common stock on the New York Stock
Exchange on December 8, 2000, was $72.63 per share.


     INVESTING IN THE COMMON STOCK INVOLVES A HIGH DEGREE OF RISK. SEE "RISK
FACTORS" BEGINNING ON PAGE 8.

<TABLE>
<CAPTION>
                                                              Per Share     Total
                                                              ---------     -----
<S>                                                           <C>          <C>
Offering Price
Discounts and Commissions to Underwriters
Offering Proceeds to Barr Laboratories
Offering Proceeds to Selling Shareholder
</TABLE>

     NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES
COMMISSION HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR DETERMINED IF THIS
PROSPECTUS IS TRUTHFUL OR COMPLETE. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE.

     The selling shareholder has granted the underwriters the right to purchase
up to 525,000 additional shares of common stock to cover any over-allotments.

                         BANC OF AMERICA SECURITIES LLC

                                              , 2000
<PAGE>   3

                               TABLE OF CONTENTS


<TABLE>
<S>                                                           <C>
Prospectus Summary..........................................    3
Risk Factors................................................    8
Use of Proceeds.............................................   13
Price Range of Our Common Stock.............................   13
Capitalization..............................................   14
Selected Consolidated Financial Data........................   15
Management's Discussion and Analysis of Financial Condition
  and Results of Operations.................................   17
Business....................................................   22
Management..................................................   36
Selling Shareholder.........................................   38
Description of Capital Stock................................   38
Underwriting................................................   39
Legal Matters...............................................   41
Experts.....................................................   41
Where You Can Find More Information.........................   41
Index to Financial Statements...............................  F-1
</TABLE>


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

                                        2
<PAGE>   4

                               PROSPECTUS SUMMARY

                            BARR LABORATORIES, INC.

OVERVIEW

     We are a specialty pharmaceutical company engaged in the development,
manufacture and marketing of generic and proprietary prescription
pharmaceuticals. We currently market approximately 76 pharmaceutical products,
representing various dosage strengths and product forms of approximately 33
chemical entities. We principally focus on developing and marketing generic and
proprietary products in the oncology and female healthcare categories, including
hormone replacement and oral contraceptives. For our fiscal year ended June 30,
2000, our total revenues were $482.3 million and our net income was $54.1
million excluding the effect of approximately $12.0 million in non-recurring
after-tax charges. We also spent $40.5 million on research and development to
support both our generic and proprietary development.

     Our business strategy has three core components:

     - developing and marketing selected generic pharmaceuticals that have one
       or more barriers to entry;

     - developing and introducing proprietary pharmaceuticals that will have
       some period of market exclusivity; and

     - developing the generic versions, and then challenging patents protecting
       brand pharmaceuticals that we believe are either invalid, unenforceable
       or not infringed by our products.

     Our product development strategy is to develop pharmaceutical products
which present barriers to entry that may limit competition and, therefore, offer
longer product life-cycles and/or higher potential profitability. The
characteristics of the products that we pursue may include:

     - the need for specialized manufacturing capabilities;

     - difficulty in raw material sourcing;

     - complex formulation or development characteristics;

     - regulatory or legal challenges; or

     - sales and marketing challenges.


     We are developing more than 60 generic pharmaceutical products, including
19 generic product Abbreviated New Drug Applications, or ANDAs, filed at the FDA
which had total U.S. brand and generic sales of approximately $3.0 billion for
the twelve months ended June 30, 2000. We also have four generic product ANDAs
for which we have tentative approval. These products, which are the subject of
patent challenges, had total U.S. brand and generic sales of approximately $3.8
billion for the twelve months ended June 30, 2000. We expect to file another 14
to 18 generic ANDAs in fiscal 2001. These products had total U.S. brand and
generic sales of approximately $2.3 billion for the twelve months ended June 30,
2000.


     In addition, we are in various stages of development on a number of
proprietary pharmaceuticals, including two products which are in Phase III
clinical trials. Six of the proprietary products in development will compete in
target markets that had total U.S. brand and generic sales of over $2.5 billion
for the twelve months ended June 30, 2000.

GENERIC PHARMACEUTICALS

     Our generic product line includes approximately 74 pharmaceutical products
representing various dosage strengths and product forms of 31 chemical entities.
Our products are manufactured in tablet, capsule and powder form.

     Tamoxifen citrate.  Our largest selling product is Tamoxifen citrate, or
Tamoxifen, a breast cancer therapy that accounted for $297.4 million, or 68% of
our product sales for our fiscal year ended June 30, 2000. Tamoxifen citrate is
the generic name for AstraZeneca Pharmaceuticals L.P.'s Nolvadex(R). In 1993,
                                        3
<PAGE>   5

following settlement of a patent challenge against AstraZeneca, the innovator of
Tamoxifen, we entered into a non-exclusive supply and distribution agreement. We
are the only distributor of Tamoxifen in the United States other than
AstraZeneca. We have a tentatively approved ANDA to manufacture Tamoxifen.
Therefore, at the time of patent expiration in August 2002, or earlier, upon
another company's successful patent challenge, we plan to manufacture Tamoxifen.
Our cost to manufacture Tamoxifen should be lower than our cost to purchase it
and, as a result, we believe our profit margins on Tamoxifen would improve once
the patent expires.

     Warfarin Sodium.  Our second largest selling product is Warfarin Sodium,
the generic equivalent of DuPont Pharmaceutical's Coumadin(R), an
anti-coagulant. Total U.S. generic and brand sales of Warfarin Sodium were
approximately $500 million for the twelve months ended June 30, 2000. During the
month of August 2000, 26% of prescriptions written for the product were filled
with our product.

PROPRIETARY PRODUCTS

     Our proprietary pharmaceutical strategy focuses on developing products that
will have some period of market exclusivity. We expect these products to
generate higher gross margins and maintain profitability longer than most
generic products. Our strategy is to focus on products which should take less
time and cost less to gain regulatory approval. We do not focus our proprietary
product development activities on discovering new molecules. We pursue
candidates in three primary categories:

     - existing chemical compounds where the development of new forms, such as
       liquid vs. tablets or different dosages, offers therapeutic or marketing
       advantages;

     - new chemical entities in selected therapeutic categories, including some
       that are marketed in other countries but not currently sold in the United
       States; and

     - patent protected proprietary products in late stages of development.

     We are developing a number of proprietary products. Six of the products
would compete in the oncology, oral contraception and anti-viral categories.


     CyPat.  Cyproterone Acetate, which we intend to market in the United States
under the name CyPat, is a steroid that blocks the action of testosterone.
Cyproterone Acetate is not currently approved for marketing in the United
States. Internationally, Cyproterone Acetate is mainly used in the management of
prostate cancer. We have initiated a Phase III clinical trial to study the
efficacy and safety of CyPat for the treatment of hot flashes following surgical
or chemical castration in prostate cancer patients. The clinical studies are
expected to include approximately 600 patients at approximately 70 sites across
the country. We have enrolled approximately 200 patients to date. We expect to
complete enrollment of our Phase III clinical trial by December 2001. Pending
FDA approval, CyPat could reach consumers as early as the second half of
calendar 2003. Of the more than 2.4 million patients in the United States who
have been diagnosed with prostate cancer, CyPat may prove suitable for treating
approximately 100,000 patients.


     SEASONALE.  SEASONALE is a patent protected oral contraceptive regimen
under which women would take the product for up to 84 consecutive days, and then
would have a seven-day pill-free interval. The proposed SEASONALE regimen is
expected to result in only 4 menstrual cycles per year, or one per "season". We
have initiated a Phase III clinical trial evaluating the use of two dose levels
of SEASONALE in a 91-day cycle administered for approximately 12 months and two
dose levels of conventional oral contraceptive therapy administered for
approximately 12 months. We expect the clinical studies to include approximately
1,500 patients, for which enrollment is nearly complete. We expect to complete
our Phase III clinical trial by December 2001. Pending FDA approval, SEASONALE
could reach consumers as early as the second half of calendar 2003. The
SEASONALE regimen is patent protected through 2017.

                                        4
<PAGE>   6

PATENT CHALLENGES

     We also actively challenge the patents protecting branded pharmaceutical
products where we believe the patents are either invalid, unenforceable or not
infringed by our products. We have initiated seven patent challenges: two have
been successfully resolved, four are currently pending and one was unsuccessful.

     Ciprofloxacin.  In January 1997, we and Bayer AG, the innovator of
Ciprofloxacin, resolved pending patent litigation regarding Ciprofloxacin.
Ciprofloxacin is the generic equivalent of Bayer AG's Cipro(R), a leading
anti-infective. Total U.S. brand and generic sales were approximately $920
million in the twelve months ended June 30, 2000. As part of the resolution, we
entered into a contingent, non-exclusive supply agreement, or the Ciprofloxacin
agreement, which ends with the expiration of the patent in December 2003. We
expect to recognize revenues ranging from approximately $28 million to $31
million per year through our fiscal year ending June 30, 2003 from this
agreement. Under terms of the Ciprofloxacin agreement, we and Aventis
Pharmaceuticals Inc., formerly Hoechst Marion Roussel, Inc., have the right to
distribute the product six months prior to patent expiry. We expect that our
selling price will be lower than that charged by Bayer.

     Fluoxetine.  Fluoxetine is the generic equivalent of Eli Lilly Company's
antidepressant, Prozac(R) which had annual sales of $2.5 billion for the twelve
months ended June 30, 2000. We filed our ANDA for Fluoxetine in February 1996,
and were sued for patent infringement by Lilly, initiating the patent challenge
process.


     On August 9, 2000, the U.S. Court of Appeals for the Federal Circuit,
located in Washington, D.C., ruled in favor of our challenge to a Lilly patent
protecting Prozac. The Court unanimously upheld our "double-patenting" claims,
finding that the invention claimed in Lilly's patent already had been the
subject of a previous patent, and thus could not be patent-protected for a
second time. In so ruling, the Court struck down a patent that would have
protected Prozac from generic competition until after December 2003. On October
6, 2000, Lilly filed a petition asking the full panel of the Court of Appeals to
rehear the case. The Court of Appeals has not yet ruled on Lilly's petition, and
Lilly is expected to seek review by the U.S. Supreme Court if the Court of
Appeals does not reverse the present ruling. If the August 9, 2000 ruling is not
reversed, we and our partners, Apotex, Inc. and Geneva Pharmaceuticals, Inc.,
expect to introduce a more affordable generic Prozac product in August 2001,
after the expiration of the additional 180 days of exclusivity Lilly was granted
by the FDA for pediatric use. This pediatric exclusivity will follow the
February 2001 expiration of an earlier patent covering Prozac.


     We incorporated in 1970 as a New York corporation. Our executive offices
are located at 2 Quaker Road, PO Box D 2900, Pomona, NY, 10970-0519, and our
telephone number at that address is (914) 362-1100. We maintain a website on the
Internet at www.barrlabs.com. Our website, and the information contained
therein, is not part of this prospectus.

     The Barr "b," "SEASONALE" and "CyPat" are our registered trademarks. All
other trademarks and registered trademarks used in this prospectus are the
property of their respective owners.

                                        5
<PAGE>   7

                                  THE OFFERING

Common stock offered by us..........     500,000 shares

Common stock offered by the selling
shareholder.........................     3,000,000 shares

          Total common stock
offered.............................     3,500,000 shares

Common stock to be outstanding after
the offering........................     35,766,231 shares(1)

Use of proceeds to us...............     Expansion of working capital, potential
                                         acquisitions and general corporate
                                         purposes

New York Stock Exchange symbol......     BRL
---------------

(1) As of September 30, 2000, excludes 2,737,109 shares of common stock reserved
    for issuance upon the exercise of outstanding options granted pursuant to
    our 1993 Stock Incentive Plan, the 1986 Stock Option Plan and the 1993 Stock
    Option Plan for Non-Employee Directors at a weighted average exercise price
    of $22.96 per share.


                                        6
<PAGE>   8

                      SUMMARY CONSOLIDATED FINANCIAL DATA


<TABLE>
<CAPTION>
                                                                                           THREE MONTHS ENDED
                                                   YEAR ENDED JUNE 30,                       SEPTEMBER 30,
                                  -----------------------------------------------------    ------------------
                                    1996       1997       1998        1999       2000       1999       2000
                                  --------   --------   --------    --------   --------    -------   --------
                                        (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
<S>                               <C>        <C>        <C>         <C>        <C>         <C>       <C>
STATEMENTS OF OPERATIONS:
REVENUES:
  Product sales.................  $232,224   $257,436   $346,638    $415,950   $440,110    $92,103   $ 99,680
  Development and other
     revenue....................        --         --         --          --     14,584         --      5,162
  Proceeds from supply
     agreements.................        --     27,050     30,666      28,083     27,584      6,750      7,000
                                  --------   --------   --------    --------   --------    -------   --------
Total revenues..................   232,224    284,486    377,304     444,033    482,278     98,853    111,842
COSTS AND EXPENSES:
  Cost of Sales.................   189,394    217,196    266,002     301,393    315,652     61,973     67,672
  Selling, general and
     administrative.............    21,695     23,391     38,990      40,439     42,479     10,410     12,695
  Research and development......    11,274     13,536     18,955      22,593     40,451      9,067     11,126
  Agreement expenses............        --         --         --          --     18,940(5)      --         --
                                  --------   --------   --------    --------   --------    -------   --------
Earnings from operations........     9,861     30,363     53,357      79,608     64,756     17,403     20,349
Interest income, net............     1,011      1,459      1,318         483      2,687        546      1,727
Other income (expense)..........       637        228        (17)         36        347        466     (2,526)
                                  --------   --------   --------    --------   --------    -------   --------
Earnings before income taxes and
  extraordinary loss............    11,509     32,050     54,658      80,127     67,790(1)  18,415     19,550
Income tax expense..............     4,368     12,603     21,148      30,877     25,448      6,922      7,325
                                  --------   --------   --------    --------   --------    -------   --------
Earnings before extraordinary
  loss..........................     7,141     19,447     33,510      49,250     42,342(1)  11,493     12,225
Extraordinary loss on early
  extinguishment of debt, net of
  taxes.........................      (125)        --       (790)         --         --         --         --
                                  --------   --------   --------    --------   --------    -------   --------
Net earnings....................  $  7,016   $ 19,447   $ 32,720    $ 49,250   $ 42,342(1) $11,493   $ 12,225
                                  ========   ========   ========    ========   ========    =======   ========
EARNINGS PER COMMON SHARE(2)(3):
Earnings before extraordinary
  loss..........................  $   0.23   $   0.61   $   1.02    $   1.45   $   1.23(1) $  0.34   $   0.35
Net earnings....................      0.22       0.61       1.00        1.45       1.23(1)    0.34       0.35
EARNINGS PER COMMON SHARE --
  ASSUMING DILUTION(2)(3):
Earnings before extraordinary
  loss..........................  $   0.22   $   0.58   $   0.96    $   1.39   $   1.19(1) $  0.32   $   0.33
Net earnings....................      0.21       0.58       0.94        1.39       1.19(1)    0.32       0.33
Weighted average shares.........    31,452     31,700     32,716      33,877     34,406     34,234     35,059
Weighted average
  shares -- assuming dilution...    32,636     33,645     34,785      35,373     35,715     35,475     37,613
</TABLE>



<TABLE>
<CAPTION>
                                                                  SEPTEMBER 30, 2000
                                                              --------------------------
                                                               ACTUAL     AS ADJUSTED(4)
                                                              --------    --------------
<S>                                                           <C>         <C>
BALANCE SHEET DATA:
Cash and cash equivalents...................................  $168,388       $202,962
Working capital.............................................   221,881        256,455
Total assets................................................   456,261        490,835
Long-term debt, excluding current portions..................    27,961         27,961
Shareholders' equity........................................   302,052        336,626
</TABLE>


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

(1) Includes a non-recurring charge of $18,940 for agreement expenses ($11,800
    after-tax or $0.33 diluted per share).


(2) Fiscal 1996 amounts have been adjusted for 3-for-2 stock splits in June 2000
    and May 1997, effected in the form of a 50% stock dividend. Fiscal 1997,
    1998 and 1999 amounts have been adjusted for the June 2000 3-for-2 stock
    split effected in the form of a 50% stock dividend.


(3) Fiscal 1997 and 1996 earnings per share amounts have been restated to
    conform with the provisions of Statement of Financial Accounting Standards
    No. 128 "Earnings per Share."

(4) Adjusted to reflect the sale of 500 shares of Common Stock offered by us
    hereby and the receipt of estimated net proceeds therefrom.

(5) Agreement expenses consist of a one-time non-cash charge representing the
    fair value of the 1,500 warrants issued to DuPont as well as approximately
    $2,500 in one-time legal charges associated with finalizing our definitive
    agreements with DuPont.

                                        7
<PAGE>   9

                                  RISK FACTORS

IF WE CANNOT INTRODUCE NEW PRODUCTS THAT ARE ACCEPTED BY THE MARKET, OUR
REVENUES AND PROFITS MAY NOT GROW.

     Generic pharmaceuticals that are launched when there is limited or no other
generic competition are typically sold at higher selling prices than when there
are several generic pharmaceutical alternatives available. As a result, such
products often produce higher gross profit margins. As competition from other
manufacturers intensifies, selling prices and gross profit margins typically
decline. These price declines vary from approximately 25% to as much as 90%
depending on several factors, including the number of competitors, the price of
the brand product and the pricing strategy of the new competitors. In addition,
our revenues could decline as brand pharmaceutical companies introduce new
therapies that compete with our products.


     In order to offset these potential declines and to generate revenue growth,
we aggressively invest in research and development. We currently have more than
60 generic and proprietary pharmaceutical products under development, including
19 generic products awaiting approval at the FDA and two proprietary products in
Phase III clinical trials. If we are unable to introduce these products in
development or the market does not accept these products, then our future
operating results will suffer.


IF TAMOXIFEN FACES COMPETITION, OR THE MANUFACTURER OF TAMOXIFEN FAILS TO SUPPLY
US, OUR SALES AND PROFITS WOULD SUFFER.

     Tamoxifen is currently one of the leading therapies in the treatment of
breast cancer. As a result of a settlement of a patent challenge, AstraZeneca
manufactures the product for us and we distribute it. Tamoxifen accounted for
approximately two-thirds of our product sales and approximately 25-30% of our
gross profits during the last three years. Our Tamoxifen sales and profits may
be negatively impacted by several factors, including:

     - Generic competition -- The patent covering Tamoxifen expires in August
       2002. We expect generic competition at that time and depending on who the
       new competitors are and their pricing strategies, our revenues and
       profits may decline more than we expect. In addition, we are aware of a
       challenge pending against the patents covering Tamoxifen. If this
       challenge is successful prior to patent expiry, we could face competition
       earlier than we expect, which would result in a decline in sales and may
       adversely affect our profits.

     - Competition from new therapies -- We believe that many pharmaceutical
       companies, including AstraZeneca, may be developing new breast cancer
       therapies that would compete with Tamoxifen. If any of these new breast
       cancer therapies are perceived or demonstrated to be better therapies
       than Tamoxifen and are introduced to the market, use of Tamoxifen could
       be reduced.


     - Supply interruptions -- We have an agreement which requires AstraZeneca
       to supply us product to meet our requirements. This agreement terminates
       at the earlier of August 21, 2002 or the date a final unappealable
       judgment holds the Tamoxifen patent invalid or unenforceable. If
       AstraZeneca's production is disrupted, we may not be able to obtain the
       required quantities to meet demand. If we were unable to meet demand, our
       sales and profits would decline.



WE ARE SUBJECT TO U.S. AGENCY ANTITRUST INVESTIGATIONS RELATING TO PATENT
LITIGATION SETTLEMENTS, WHICH COULD TAKE CONSIDERABLE TIME AND MONEY TO RESOLVE
AND, IF ADVERSELY CONCLUDED, COULD LIMIT THE OPTIONS WE HAVE TO RESOLVE THESE
CHALLENGES THAT ARE A SIGNIFICANT PART OF OUR BUSINESS STRATEGY.


     On June 30, 1999, we received a civil investigative demand and a subpoena
from the Federal Trade Commission, or FTC, that, although not alleging any
wrongdoing, sought documents and data relating to the January 1997 agreements
resolving patent litigation involving Ciprofloxacin hydrochloride, which had
been

                                        8
<PAGE>   10

pending in the U.S. District Court for the Southern District of New York. The
FTC is investigating whether we, through settlement and supply agreements, have
engaged or are engaging in activities in violation of the antitrust laws. We
continue to cooperate with the FTC in this investigation.


     The FTC investigation described above could take considerable time and
money to resolve. In addition, the antitrust authorities' investigation of
patent settlement arrangements may limit the options we have to resolve these
challenges that are a significant part of our business strategy.


IF BRANDED PHARMACEUTICAL COMPANIES' LEGISLATIVE AND REGULATORY EFFORTS TO LIMIT
THE USE OF GENERICS ARE SUCCESSFUL, THEN OUR SALES OF PRODUCTS SUBJECT TO THESE
EFFORTS MAY SUFFER.

     Many branded pharmaceutical companies have increasingly used state and
federal legislative and regulatory means to delay generic competition. These
efforts have included

     - pursuing new patents for existing products,

     - using the Citizen Petition process to request amendments to FDA
       standards,

     - seeking changes to the United States Pharmacopeia, an organization which
       publishes industry recognized compendia of drug standards, and

     - attaching patent extension amendments to non-related federal legislation.

     In addition, some branded pharmaceutical companies have engaged in
state-by-state initiatives to enact legislation that restricts the substitution
of some generic drugs. Some of these initiatives have limited the generic
substitution of Warfarin Sodium, our second largest product, and may have
similar impact on products that we are developing.

PROPOSED FDA REGULATIONS AND RECENT FDA GUIDELINES MAY IMPAIR OUR ABILITY TO
UTILIZE FULLY THE 180-DAY MARKETING EXCLUSIVITY PERIOD FOR OUR SUCCESSFUL PATENT
CHALLENGES, SUBSTANTIALLY DIMINISHING THE VALUE OF A FAVORABLE RULING.

     One of the key motivations for challenging patents is the 180-day period of
market exclusivity. Under the Hatch-Waxman Act, the first company to file an
acceptable ANDA for a patented drug and to certify that one or more of the
patents protecting the drug is invalid or not infringed is eligible for 180 days
of market exclusivity. That is, the FDA may not approve another generic version
of the product for any company during the first 180 days following certain
specified triggering events. This period of market exclusivity provides the
patent challenger with the opportunity to earn a return on the risks taken and
its legal and development costs and to build its market share to a significant
position.


     In August, 1999, the FDA issued a notice of proposed rulemaking in which it
proposed new regulations for implementing the 180-day market exclusivity
provision. Additionally, the FDA announced a proposed modification to its
proposed generic drug exclusivity rule in a March 2000 industry Guidance. In
general, the proposed rule and Guidance would make it more difficult for generic
manufacturers to obtain and benefit from the market exclusivity provisions of
the Hatch-Waxman Act. If adopted and upheld, the proposed rule could impair our
ability to obtain and utilize market exclusivity in our successful patent
challenge cases, including the August 9, 2000 court ruling in favor of our
challenge of a patent protecting Eli Lilly's Prozac discussed earlier in this
prospectus. If we lose some or all of the 180 days of exclusivity, we expect the
value of the favorable Prozac ruling could be substantially diminished.


IF WE DO NOT OBTAIN A SALES ORGANIZATION TO SELL OUR FUTURE PROPRIETARY
PRODUCTS, WE WILL NOT BE ABLE TO GENERATE SALES AND PROFITS FROM THESE PRODUCTS.

     Nearly all of our proprietary products will require sales representatives
that promote those products directly to physicians. At this time, we do not
employ such sales representatives. When our products become available for

                                        9
<PAGE>   11

commercial launch, we may be unable to license our products to pharmaceutical
companies with sales organizations, enter into favorable co-promotion or
contract sales arrangements, and/or recruit or acquire an effective sales
organization. If we are unable to put a sales force in place, either on our own
or through one of these types of arrangements, we may not realize sales and
profits from these products. For example, we recently received FDA approval for
Hydroxyurea and are currently negotiating with third parties to distribute this
product.

WE FACE THE RISK OF PRODUCT LIABILITY CLAIMS, FOR WHICH WE MAY BE INADEQUATELY
INSURED.

     Manufacturing, marketing, selling and testing pharmaceutical products
involve a risk of product liability. Even unsuccessful product liability claims
could require us to spend money on litigation, divert management's time, damage
our reputation and impair the marketability of our products. We maintain $20
million of product liability insurance and have an indemnification provision in
our Tamoxifen agreement. However, such measures may be inadequate to remove the
risk of some product liability claims.

AN EXISTING SHAREHOLDER WILL OWN APPROXIMATELY 33% OF OUR COMMON STOCK WHICH MAY
ALLOW HIM TO INFLUENCE SHAREHOLDER VOTES.

     Upon the completion of the offering, Dr. Bernard Sherman, a Barr director
and beneficial owner of Apotex, Inc., will beneficially own approximately 33.1%
of our outstanding common stock, before giving effect to the exercise of the
underwriters' over-allotment option. Dr. Sherman does not participate in the
daily management of our company. However, he may be able to influence the
outcome of shareholder votes, including votes concerning the elections of
directors, the adoption or amendment of provisions in our Certificate of
Incorporation, and the approval of mergers and other significant corporate
transactions.

THE LOWER TRADING VOLUME AND LOWER PUBLIC OWNERSHIP OF OUR COMMON STOCK MAY
CONTRIBUTE TO ITS PRICE VOLATILITY.


     The stock market has from time to time experienced significant price and
volume fluctuations that may be unrelated to the operating performance of
particular companies. In addition, the market price of our common stock, like
the stock prices of many publicly traded pharmaceutical and specialty
pharmaceutical companies, has been and may continue to be highly volatile. In
particular, the volatility in our shares is influenced by lower trading volume
and lower public ownership relative to other publicly held generic
pharmaceutical companies. For example, our stock price has ranged from $20 per
share to over $80 per share since January 1, 2000. Our average weekly dollar
trading volume for the six months ended November 24, 2000 was approximately $120
million, compared to an average of $226 million for five of our specialty
pharmaceutical competitors. In addition, 56% of our total shares outstanding are
publicly owned, compared to an average of 87% for those same competitors. Having
a smaller percentage of shares owned by the public, as compared to such
competitors, means that our stock is relatively less liquid and thus more
susceptible to large price fluctuations.


     The following factors, among others, may have a significant impact on the
market price of our common stock:


     - the sale or attempted sale of a large amount of our common stock into the
       market,



     - announcements of technological innovations or new commercial products by
       us or our competitors,


     - timing and outcome of legal proceedings, including decisions regarding
       the timing and outcome of FDA and court decisions relating to the
       exclusivity period related to patent challenges,


     - publicity regarding actual or potential medical results relating to
       marketed products, or to products under development by us or our
       competitors, and



     - announcements of new patents by brand companies that may delay the timing
      of our generic product launches.


                                       10
<PAGE>   12

BECAUSE WE HAVE NOT PAID CASH DIVIDENDS, INVESTORS MUST LOOK TO STOCK
APPRECIATION FOR A RETURN ON THEIR INVESTMENT IN US.

     We have never paid and do not presently intend to pay any cash dividends.
Thus, investors should only look to appreciation in the value of their shares
for a return on their investment. In addition, we are limited by existing debt
covenants as to the amount of dividends we can pay. Our current policy is to
retain our earnings, if any, to finance expansion and product development.
Payment of dividends in the future will depend on our earnings and financial
condition and other factors our Board of Directors may consider or deem
appropriate at the time.

                                       11
<PAGE>   13

                   NOTE REGARDING FORWARD-LOOKING STATEMENTS

     You should rely only on the information contained in this prospectus. We
have not authorized anyone to provide you with information different from that
contained in this prospectus. We are offering to sell, and seeking offers to buy
shares of Barr Laboratories, Inc. common stock only in jurisdictions where
offers and sales are permitted. The information contained in this prospectus is
accurate only as of the date of this prospectus, regardless of the time of
delivery of this prospectus or of any sale of the Barr Laboratories, Inc. common
stock. We have not authorized anyone to provide you with information that is
different. This document may be used only where it is legal to sell these
securities.

     Except for the historical information contained herein, this prospectus
contains forward-looking statements, all of which are subject to risks and
uncertainties. These risks and uncertainties include: the timing and outcome of
legal proceedings; the difficulty in predicting the timing of FDA approvals; the
difficulty in predicting the timing and outcome of FDA decisions on patent
challenges; market and customer acceptance and demand for new pharmaceutical
products; the ability to market proprietary products; the impact of competitive
products and pricing; timing and success of product development and launch;
availability of raw materials; the regulatory environment; fluctuations in
operating results; and, other risks detailed from time-to-time in our filings
with the SEC. Forward-looking statements can be identified by their use of words
such as "expects," "plans," "will," "believes," "may," "could", "estimates,"
"intends" and other words of similar meaning. Should known or unknown risks or
uncertainties materialize, or should our assumptions prove inaccurate, actual
results could vary materially from those anticipated.

                                       12
<PAGE>   14

                                USE OF PROCEEDS


     We are selling 500,000 of the 3,500,000 shares of common stock being
offered hereby. The net proceeds to us from this offering are estimated to be
approximately $34.6 million based on the closing price on December 8, 2000 of
$72.63 per share, after deducting our share of the estimated offering expenses
and underwriting discounts. We will not receive any proceeds from the sale of
the common stock by the selling shareholder.


     We intend to use the net proceeds we receive from the offering for general
corporate purposes, including expansion of working capital and potential
acquisitions of companies and/or selected products that are complementary to our
existing business. Although we currently have no commitments with respect to
additional acquisitions, we regularly evaluate such opportunities. Pending such
uses, we will invest the net proceeds in short-term investment-grade,
interest-bearing securities.

                          PRICE RANGE OF COMMON STOCK

     Since February 10, 1998, our common stock has been listed and traded on the
New York Stock Exchange. Prior to February 10, 1998, our common stock was listed
and traded on the American Stock Exchange. The following table sets forth, for
the quarterly periods indicated, high and low prices of the common stock.
Amounts reflect adjustments for our June 2000 3-for-2 stock split.


<TABLE>
<CAPTION>
                                                               LOW       HIGH
                                                              ------    ------
<S>                                                           <C>       <C>
FISCAL YEAR ENDED JUNE 30, 1998:
  First Quarter.............................................  $24.67    $32.67
  Second Quarter............................................   21.67     26.75
  Third Quarter.............................................   22.17     27.83
  Fourth Quarter............................................   25.21     31.29
FISCAL YEAR ENDED JUNE 30, 1999:
  First Quarter.............................................  $16.46    $26.50
  Second Quarter............................................   16.59     33.17
  Third Quarter.............................................   18.92     32.37
  Fourth Quarter............................................   19.00     27.00
FISCAL YEAR ENDED JUNE 30, 2000:
  First Quarter.............................................  $18.88    $26.75
  Second Quarter............................................   19.00     23.50
  Third Quarter.............................................   20.00     33.92
  Fourth Quarter............................................   25.38     45.88
FISCAL YEAR ENDING JUNE 30, 2001:
  First Quarter.............................................  $43.63    $80.13
  Second Quarter (through December 8, 2000).................   54.19     73.00
</TABLE>



     The last reported sales price for our common stock on the New York Stock
Exchange on December 8, 2000 was $72.63 per share.


                                       13
<PAGE>   15

                                 CAPITALIZATION


     The following table sets forth our cash and capitalization as of September
30, 2000:


     - on an actual basis; and

     - as adjusted to reflect the receipt and application of the estimated net
       proceeds, after deducting our share of the underwriting discounts and
       commissions and expenses, from the sale of 500,000 shares of common stock
       by us pursuant to this offering.


<TABLE>
<CAPTION>
                                                                SEPTEMBER 30, 2000
                                                              -----------------------
                                                               ACTUAL     AS ADJUSTED
                                                              --------    -----------
                                                                  (IN THOUSANDS)
<S>                                                           <C>         <C>
Cash and cash equivalents...................................  $168,388     $202,962
                                                              ========     ========
Total debt..................................................  $ 29,885     $ 29,885
Shareholders' equity:
  Preferred stock, par value $1 per share; 2,000,000 shares
     authorized; none issued................................        --           --
  Common Stock, par value $.01 per share; 100,000,000 shares
     authorized; 35,004,869 shares issued; 35,504,869 shares
     issued as adjusted(1)..................................       354          359
  Additional paid in capital................................   105,924      140,493
  Retained earnings.........................................   192,259      192,259
  Accumulated Other Comprehensive Income....................     3,528        3,528
  Treasury stock (176,932 shares at cost)...................       (13)         (13)
                                                              --------     --------
     Total shareholders' equity.............................   302,052      336,626
                                                              --------     --------
          Total capitalization..............................  $331,937     $366,511
                                                              ========     ========
</TABLE>


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

(1) Excludes 2,737,109 shares of common stock reserved for issuance upon the
    exercise of outstanding options granted pursuant to our 1993 Stock Incentive
    Plan, our 1986 Stock Option Plan and our 1993 Stock Option Plan for the
    Non-Employee Directors at a weighted average exercise price of approximately
    $22.96 per share.


                                       14
<PAGE>   16

                      SELECTED CONSOLIDATED FINANCIAL DATA


     You should read the following selected consolidated financial data in
conjunction with "Management's Discussion and Analysis of Financial Condition
and Results of Operations" and our consolidated financial statements and related
notes included elsewhere in the prospectus. We derived the statements of
operations data for the three years ended June 30, 2000 and the balance sheet
data at June 30, 1999 and 2000 from our audited financial statements. We derived
the statements of operations for the two years ended June 30, 1996 and the
balance sheet data as of June 30, 1996, 1997 and 1998 from audited financial
statements which are not included in the prospectus. We derived the statement of
operations data for the periods ended September 30, 1999 and 2000 and the
balance sheet data as of September 30, 2000 from unaudited financial statements
which are not included in the prospectus. The results of operations for the
three months ended September 30, 2000 are not necessarily indicative of the
results of operations to be expected for the fiscal year ending June 30, 2001.



<TABLE>
<CAPTION>
                                                                                    THREE MONTHS ENDED
                                           YEAR ENDED JUNE 30,                         SEPTEMBER 30,
                           ----------------------------------------------------     -------------------
                             1996       1997       1998       1999       2000         1999       2000
                           --------   --------   --------   --------   --------     --------   --------
                                             (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
<S>                        <C>        <C>        <C>        <C>        <C>          <C>        <C>
STATEMENTS OF OPERATIONS
  DATA:
REVENUES:
  Product sales..........  $232,224   $257,436   $346,638   $415,950   $440,110     $92,103    $99,680
  Development and other
     revenue.............        --         --         --         --     14,584          --      5,162
  Proceeds from supply
     agreements..........        --     27,050     30,666     28,083     27,584       6,750      7,000
                           --------   --------   --------   --------   --------     -------    -------
Total revenues...........   232,224    284,486    377,304    444,033    482,278      98,853    111,842
COSTS AND EXPENSES:
  Cost of Sales..........   189,394    217,196    266,002    301,393    315,652      61,973     67,672
  Selling, general and
     administrative......    21,695     23,391     38,990     40,439     42,479      10,410     12,695
  Research and
     development.........    11,274     13,536     18,955     22,593     40,451       9,067     11,126
  Agreement expenses.....        --         --         --         --     18,940(4)       --         --
                           --------   --------   --------   --------   --------     -------    -------
Earnings from
  operations.............     9,861     30,363     53,357     79,608     64,756      17,403     20,349
Interest income, net.....     1,011      1,459      1,318        483      2,687         546      1,727
Other income (expense)...       637        228        (17)        36        347         466     (2,526)
                           --------   --------   --------   --------   --------     -------    -------
Earnings before income
  taxes and extraordinary
  loss...................    11,509     32,050     54,658     80,127     67,790(1)   18,415     19,550
Income tax expense.......     4,368     12,603     21,148     30,877     25,448       6,922      7,325
                           --------   --------   --------   --------   --------     -------    -------
Earnings before
  extraordinary loss.....     7,141     19,447     33,510     49,250     42,342(1)   11,493     12,225
Extraordinary loss on
  early extinguishment of
  debt, net of taxes.....      (125)        --       (790)        --         --          --         --
                           --------   --------   --------   --------   --------     -------    -------
Net earnings.............  $  7,016   $ 19,447   $ 32,720   $ 49,250   $ 42,342     $11,493    $12,225
                           ========   ========   ========   ========   ========     =======    =======
EARNINGS PER COMMON
  SHARE(2):
Earnings before
  extraordinary loss.....  $   0.23   $   0.61   $   1.02   $   1.45   $   1.23(1)  $  0.34    $  0.35
Net earnings.............      0.22       0.61       1.00       1.45       1.23(1)     0.34       0.35
EARNINGS PER COMMON
  SHARE -- ASSUMING
  DILUTION(2):
Earnings before
  extraordinary loss.....  $   0.22   $   0.58   $   0.96   $   1.39   $   1.19(1)  $  0.32    $  0.33
Net earnings(3)..........      0.21       0.58       0.94       1.39       1.19(1)     0.32       0.33
Weighted average
  shares.................    31,452     31,700     32,716     33,877     34,406      34,234     35,059
Weighted average
  shares -- assuming
  dilution...............    32,636     33,645     34,785     35,373     35,715      35,475     37,613
</TABLE>





                                       15
<PAGE>   17


<TABLE>
<CAPTION>
                                                  JUNE 30,                           SEPTEMBER 30,
                            ----------------------------------------------------     -------------
                              1996       1997       1998       1999       2000            2000
                            --------   --------   --------   --------   --------    ----------------
                                                         (IN THOUSANDS)
<S>                         <C>        <C>        <C>        <C>        <C>         <C>
BALANCE SHEET DATA:
Cash and cash
  equivalents.............  $ 44,893   $ 31,923   $ 72,956   $ 94,867   $155,922        $168,388
Working capital...........    52,985     41,807     95,281    146,863    202,892         221,881
Total assets..............   169,220    202,845    310,851    347,890    423,853         456,261
Long-term debt, excluding
  current portions........    17,709     14,941     32,174     30,008     28,084          27,961
Shareholders' equity......    80,161    102,138    155,929    213,707    282,168         302,052
</TABLE>


---------------
(1) Includes a non-recurring charge of $18,940 for agreement expenses ($11,800
    after tax or $0.33 per diluted share).

(2) Amounts have been adjusted for 3-for-2 stock splits in June 2000 and May
    1997 effected in the form of a 50% stock dividend.

(3) Fiscal 1997 and 1996 earnings per share amounts have been restated to
    conform with the provisions of Statement of Financial Accounting Standards
    No. 128 "Earnings per Share."
(4) Agreement expenses consist of a one-time non-cash charge representing the
    fair value of the 1,500 warrants issued to DuPont as well as approximately
    $2,500 in one-time legal charges associated with finalizing our definitive
    agreements with DuPont.

                                       16
<PAGE>   18

                    MANAGEMENT'S DISCUSSION AND ANALYSIS OF
                 FINANCIAL CONDITION AND RESULTS OF OPERATIONS

INTRODUCTION

     We have been engaged in the manufacture of generic drugs since we commenced
operations in 1970. Since 1994, we have pursued a business strategy of
developing and marketing selected generic pharmaceuticals, and challenging
patents of certain branded products. In 1997 we added a third strategy
developing and introducing proprietary pharmaceuticals that will have some
market exclusivity.

     We market approximately 76 pharmaceutical products, representing various
dosage strengths and product forms of approximately 33 chemical entities. Our
product line is principally focused on the development and marketing of generic
and proprietary products in the oncology and female healthcare categories,
including hormone replacement and oral contraceptives, and other products that
have one or more barriers to entry.

RESULTS OF OPERATIONS
  (thousands of dollars)


  Three months ended September 30, 2000 as compared to three months ended
September 30, 1999



     Total revenues increased approximately 13% as a result of increased product
sales and development and other revenue.



     Tamoxifen sales increased 13% from $55,270 to $62,494. The increase was due
to higher prices and an expansion in the use of Tamoxifen. In October 1998,
Tamoxifen was approved to reduce the incidence in breast cancer in women at high
risk of developing the disease. Tamoxifen is a patent protected product
manufactured for us by AstraZeneca. Currently, Tamoxifen only competes against
AstraZeneca's product, which is sold under the brand name Nolvadex(R).



     Other product sales increased 1% from $36,833 to $37,186. The increase was
primarily due to sales of ViaSpan(R), which we began distributing on August 1,
2000 under an agreement with DuPont Pharmaceuticals Company.



     Development and other revenue consists of amounts received from DuPont
Pharmaceuticals Company for various development and co-marketing agreements
entered into in March 2000. As we incur research and other development activity
costs, we record such expenses as R&D and invoice and record the related revenue
from DuPont as development and other revenue. Development and other revenue for
the three months ended September 30, 2000 included $4,600 related to these
development agreements.



     Revenues under these agreements are expected to range from $4,000 to $6,000
per quarter for the remainder of fiscal 2001.



     Cost of sales increased to $67,672 or 68% of product sales from $61,973 or
67% of product sales. The increase in both dollars and percent of product sales
was due mainly to increased sales of Tamoxifen and an increased percentage of
Tamoxifen sales to total product sales. Tamoxifen is distributed by us and has
lower margins than most of our other products.



     Selling, general and administrative expenses increased from $10,410 to
$12,695. The increase was primarily due to an increase in sales and marketing
expenses and legal spending. Sales and marketing expenses increased primarily
due to royalty payments related to ViaSpan sales. The increase in legal spending
was primarily related to an increase in spending related to on-going patent
challenges, legal research and preparation related to several additional patent
challenges and the Invamed, Inc./Apothecon, Inc. litigation. Selling, general
and administrative expenses for the three months ended September 30, 2000 also
includes a $740 charge related to our on-going rationalization of our New York
and New Jersey manufacturing operations, as well as a reduction of several
salary positions. We recorded a similar charge of $540 in the prior year.


                                       17
<PAGE>   19


     Research and development expenses increased from $9,067 to $11,126.
Approximately 66% of this increase is the result of increased wage and related
costs, primarily associated with increased headcount. In addition, we made
increased payments to clinical research organizations for clinical and bio-study
services associated with our proprietary development activities and payments for
strategic collaborations and raw material development agreements.



     Interest income increased by $1,068 primarily due to an increase in the
average cash and cash equivalents balance, as well as an increase in the market
rates on our short-term investments.



     Interest expense decreased $113 primarily due to lower fees paid on the
average unsecured Tamoxifen payable balance.



     Other expense increased by $2,992 primarily due to the charge related to
the write-off of our investment in Gynetics, Inc. The prior year amount reflects
the gain recognized on the warrants received from Halsey Drug Co., Inc.


  Fiscal year ended June 30, 2000 as compared to fiscal year ended June 30, 1999

     Total revenues increased approximately 9% from $444,033 to $482,278. This
increase was attributable to increases in product sales and development and
other revenue offset by a slight decrease in proceeds from supply agreements.

     Tamoxifen sales increased 8% from $275,127 to $297,395. The increase was
attributable to higher prices and an expansion in the use of Tamoxifen. In
October 1998, Tamoxifen was approved to reduce the incidence of breast cancer in
women at high risk of developing the disease. Tamoxifen is a patent protected
product manufactured for us by AstraZeneca, the innovator. Currently, we are the
only distributor of Tamoxifen in the U.S. other than AstraZeneca, whose product
is sold under the brand name Nolvadex. In fiscal 2000, Tamoxifen accounted for
68% of our product sales versus 66% in fiscal 1999.

     The prior year's sales included $6,373 of Minocycline sales which we
discontinued selling in late 1999 due to deteriorating market conditions.

     Other product sales increased 6% from $134,450 to $142,583. The increase
was attributable to sales of Warfarin Sodium, Medroxyprogesterone Acetate,
Methotrexate, Naltrexone, Trazadone and Hydroxyurea. Warfarin Sodium sales
accounted for approximately 14% of total product sales, which was a slight
decline from 15% in the prior year. We ended the fiscal year with approximately
27% of all brand and generic Warfarin Sodium unit sales.

     Development and other revenue consists of amounts received from DuPont
Pharmaceuticals Company, or DuPont, for various development and co-marketing
agreements.


     As discussed in Note 2 to the financial statements, in connection with its
Product Development Agreement, DuPont may invest up to $45,000 over three years
to support the development of three of our proprietary products. As we incur
qualified research and development expenses, as defined in the Product
Development Agreement, we record such expenses as R&D and invoice and record the
related revenue from DuPont as development and other revenue. In connection with
the Product Development Agreement, we recorded $8,000 as development and other
revenue for the year ended June 30, 2000.



     In connection with the Development and Marketing Agreement, Barr receives
payments and records revenues during the development period as Barr completes
its ongoing research and other development activities necessary to gain FDA
approval for the product. Such payments could total up to $9,000 over five
quarters. For the year ended June 30, 2000, we recorded $4,000 as development
and other revenue related to this agreement.



     Revenues under these agreements are expected to range from $4,000 to $6,000
per quarter in fiscal 2001.



     Under the terms of the ViaSpan Agreement, we will become the sole
distributor in the United States and Canada of DuPont's ViaSpan(R) organ
transplant preservation agent. During a transition period, that ended July 31,
2000, DuPont remained the distributor of ViaSpan and will pay us a fee based on
a defined formula


                                       18
<PAGE>   20


("Transition Revenue") related to DuPont's sales of ViaSpan during this
transition period. Such Transition Revenue is included in development and other
revenue. For the year ended June 30, 2000, we recorded approximately $2,600 as
development and other revenue related to the ViaSpan Agreement. Beginning August
1, 2000, we assumed responsibility for distributing the product and will record
product sales and related costs in our Consolidated Statements of Operations
and, as of August 1, 2000, will no longer record Transition Revenue in
development and other revenue.


     Proceeds from supply agreements decreased $499, as expected, since proceeds
earned in the prior year under a separate contingent supply agreement related to
the Ciprofloxacin litigation ceased.

     Cost of sales increased from $301,393 to $315,652 primarily related to an
increase in our product sales. As a percentage of product sales, cost of sales
declined from 72.5% to 71.7%. Our product margins are dependent on several
factors including product sales mix, manufacturing efficiencies and competition.
The decrease in cost of sales as a percentage of product sales was due to a more
favorable mix among non-Tamoxifen product sales, which was slightly offset by a
higher percentage of Tamoxifen sales to total product sales. Since we distribute
Tamoxifen, we earn lower margins on it than the margins we earn from most of the
products we sell.

     Selling, general and administrative expenses increased from $40,439 to
$42,479. The increase was primarily due to legal costs related to litigation
with DuPont that was resolved in March 2000 and to ongoing patent challenges.
Also, the prior year included approximately $1,700 related to our share of the
$4,000 payment received from Eli Lilly & Company for reimbursement of legal
costs incurred as part of the agreement to take the Prozac case directly to the
court of appeals.

     Research and development expenses increased from $22,593 to $40,451. Over
60% of the increase in research and development spending was attributable to
increased payments to our clinical research organizations for clinical and
bio-study services. The balance of the increase is mainly related to higher
personnel costs, which support an increased number of products in development
and higher costs associated with our proprietary drug development efforts. Also,
the prior year included $646 related to a proprietary product collaboration with
Eastern Virginia Medical School. The increased level of spending during the
fiscal year ended June 30, 2000, enabled us to file fifteen applications with
the U.S. Food and Drug Administration and initiate Phase III clinical studies
for two of our proprietary products.

     Agreement expenses consist of a one-time non-cash charge representing the
fair value of the 1.5 million warrants issued to DuPont as well as approximately
$2,500 in one-time legal charges associated with finalizing our definitive
agreements with DuPont.

     Interest income increased $1,912 primarily due to an increase in the
average cash and cash equivalents balance.

     Interest expense decreased $292 due to a decrease in our debt balances and
lower fees paid on the average unsecured Tamoxifen payable balance.

     Other income increased $311 primarily due to the gain we recognized on the
warrants received from Halsey Drug Co., Inc.

  Fiscal year ended June 30, 1999 as compared to fiscal year ended June 30, 1998

     Total revenues increased approximately 18% from $377,304 to $444,033. The
increase was attributable to increases in product sales offset by a slight
decrease in proceeds from supply agreements.

     Product sales increased 20% from $346,638 to $415,950. The increase was the
result of increased sales of Tamoxifen, Warfarin Sodium, Naltrexone, Hydroxyurea
and various hormonal products that we launched throughout fiscal 1998 and 1999.

     Tamoxifen sales increased 16% from $236,587 to $275,127 due to increased
volume and, to a lesser extent, higher prices. Increased volumes appear to be
related to investment buying and increased usage in the product from the
expansion of Tamoxifen's indication for the reduction in the incidence of breast
cancer in

                                       19
<PAGE>   21

women at high risk for developing the disease. Investment buying generally
refers to the decision by customers to increase their purchases above their
anticipated immediate needs in order to buy ahead of expected future price
increases. Higher prices are the result of 4% price increases in April 1998 and
May 1999. Tamoxifen is a patent protected product manufactured for us by
AstraZeneca. Currently, we are the only distributor of Tamoxifen in the U.S.
other than AstraZeneca whose product is sold under the brand name Nolvadex. In
fiscal 1999, Tamoxifen accounted for 66% of our product sales versus 68% in
fiscal 1998.

     The remaining increase in product sales from $110,051 to $140,823 was the
result of increased sales of Warfarin Sodium as well as products such as
Naltrexone, Hydroxyurea and various hormonal products, which we launched in
fiscal 1998 and 1999. During fiscal 1999, we implemented additional marketing
and market share incentive programs designed to maintain and increase our market
share of the total Coumadin/Warfarin market. In fiscal 1999, Warfarin Sodium
accounted for approximately 15% of product sales versus 11% in fiscal 1998.
Revenue from products launched in fiscal 1999 more than offset lower sales on
products being phased out of our product line and price declines and higher
discounts on certain existing products.

     Proceeds from supply agreements declined $2,583, as expected, since
proceeds earned in the prior year under a separate contingent supply agreement
related to the Ciprofloxacin litigation were not repeated.

     Cost of sales increased from $266,002 to $301,393, due to increased product
sales, but decreased as a percentage of product sales from 76.7% to 72.5%. Our
product margins are dependent upon several factors including product sales mix,
manufacturing efficiencies and competition. The decrease in cost of sales as a
percentage of product sales in fiscal 1999 was the result of a more favorable
mix of products including a lower percentage of Tamoxifen sales to total product
sales. Since we distribute Tamoxifen, we earn lower margins on it than the
margins we earn from most of the products we sell.

     Selling, general and administrative expenses increased 4% from $38,990 to
$40,439. This increase was primarily due to increased legal and headcount costs,
partially offset by lower advertising and promotions costs and a decrease in
charges incurred related to the shut-down of facilities we used to lease. Higher
legal expenses, due to our federal anti-trust suit against DuPont, more than
offset our share of a $4,000 payment received from Eli Lilly & Company in
January, for legal costs incurred as part of the agreement to take the Prozac
case directly to the U.S. Court of Appeals. Higher headcount costs were due to
our significant growth during fiscal 1998 and 1999. Advertising and promotion
costs were lower than the prior year when we spent heavily on the launch of
Warfarin Sodium. The fiscal year ended June 30, 1999 also includes a $360
restructuring charge compared to the $1,200 restructuring charge incurred in the
prior fiscal year, both of which were primarily related to closing leased
facilities.

     Research and development expenses increased 19% from $18,955 to $22,593.
The increase was primarily due to work on more clinical studies, an increase in
personnel costs to support the number of products in development and higher
costs associated with our proprietary drug development efforts. Fiscal 1999
included $646 in expenses related to the proprietary product collaboration with
Eastern Virginia Medical School, whereas fiscal 1998 included $645 for the
acquisition of six ANDAs and related technologies to expand our line of female
healthcare products.

     Interest income increased by $1,004 or 46% due to higher average cash and
cash equivalents balances, partially offset by a slight decrease in the market
rates on our short-term investments.

     Interest expense increased $1,839 due to a reduction in the amount of
interest we capitalized. The amount of interest capitalized declined, as
expected, due to the reduction in capital spending on the Virginia facility,
which was substantially completed by the spring of 1998.

     In fiscal 1998, we incurred an extraordinary loss of $790 related to the
early retirement of debt.

LIQUIDITY AND CAPITAL RESOURCES


     Our cash and cash equivalents increased from $155,922 at June 30, 2000 to
$168,388 at September 30, 2000. During the three months ended September 30,
2000, we increased the cash held in our interest-bearing escrow account from
$74,011 at June 30, 2000 to $85,551.


                                       20
<PAGE>   22


     Cash provided by operating activities totaled $10,679 for the three months
ended September 30, 2000 as net earnings and non-cash charges such as
depreciation and an investment write-off, more than offset working capital
increases. The working capital increase was led by an increase in inventories,
which was partially offset by increases in accounts payable and income taxes
payable. The increases in inventory and accounts payable was primarily related
to an increase in Tamoxifen inventory. The Tamoxifen increase was based on
management's decision to increase its Tamoxifen purchases and was consistent
with past trends. In addition, inventories were higher in September due to our
initial purchase of ViaSpan inventory in August. Income taxes payable increased
as a result of increased taxable earnings and the timing of estimated tax
payments.



     During the first three months of fiscal 2001, we invested approximately
$2,200 in capital assets primarily related to upgrades and new equipment for our
facilities. We believe we may invest an additional $14,000 to $16,000 in capital
assets in fiscal 2001.



     Debt balances declined slightly during the quarter due to scheduled
repayments on our debt. Scheduled principal repayments on our existing debt will
be $1,552 during the quarter ending December 31, 2000. We did not use any funds
available to us under our $20,000 revolving credit facility during the current
quarter.



     We are expecting to increase our research and development spending to
$58,000 to $62,000 in fiscal 2001 as well as initiate three additional patent
challenges. Patent challenges can take three to six years to complete and can
require an investment of $8,000 to $10,000.



     To expand our growth opportunities, we have and will continue to evaluate
and enter into various strategic collaborations. The timing and amount of cash
required to enter into these collaborations is difficult to predict because it
is dependent on several factors, many of which are outside of our control.
However, we believe, that based on arrangements in place at September 30, 2000,
we could spend between $2,000 and $4,000 over the next twelve months for these
collaborations. The $2,000 to $4,000 excludes any cash needed to fund strategic
acquisitions that we may consider in the future.



     We believe that our current cash balances, cash flows from operations and
borrowing capacity, including unused amounts under our existing $20,000
revolving credit facility, will be adequate to meet the operations described
above and to take advantage of strategic opportunities as they occur. To the
extent that additional capital resources are required, such capital may be
raised by additional bank borrowings, equity offerings or other means.



RECENT ACCOUNTING PRONOUNCEMENTS


  Derivative Instruments


     On June 15, 1998, the Financial Accounting Standards Board ("FASB") issued
SFAS No. 133, "Accounting for Derivative Instruments and Hedging Activities."
SFAS No. 133, as amended by SFAS No. 138 (collectively, SFAS No. 133), provides
accounting and reporting standards for derivative instruments, including certain
derivative instruments embedded in other contracts, and for hedging activities.
SFAS No. 133 is effective for all fiscal quarters for all fiscal years beginning
after June 15, 2000. We implemented SFAS No. 133 on July 1, 2000 and our
adoption has not had a material impact on our consolidated financial statements.


  Revenue Recognition


     In December 1999, the SEC staff issued Staff Accounting Bulletin ("SAB")
101, "Revenue Recognition in Financial Statements," which summarizes certain of
the SEC staff's views in applying generally accepted accounting principles to
revenue recognition in financial statements. The effective date of this bulletin
is our fourth fiscal quarter ending June 30, 2001. We are currently evaluating
this bulletin and its impact on our existing accounting policies and
consolidated financial statements.


                                       21
<PAGE>   23

                                    BUSINESS

OVERVIEW

     We are a specialty pharmaceutical company engaged in the development,
manufacture and marketing of generic and proprietary prescription
pharmaceuticals. We currently market approximately 76 pharmaceutical products,
representing various dosage strengths and product forms of approximately 33
chemical entities. Our product line focuses principally on the development and
marketing of generic and proprietary products in the oncology and female
healthcare categories, including hormone replacement and oral contraceptives.

BUSINESS STRATEGY

     We focus our resources on three core strategies:

     Developing and Marketing Selected Generic Pharmaceuticals.  We develop and
market the generic equivalent of brand pharmaceuticals that are off-patent but
that have one or more barriers to entry. The characteristics of the products
that we pursue may include:

     - the need for specialized manufacturing capabilities;

     - difficulty in raw material sourcing;

     - complex formulation or development characteristics;

     - regulatory or legal challenges; or

     - sales and marketing challenges.

We believe products with such barriers will face limited competition and
therefore should produce higher profits for a longer period of time than
products that have no barriers, which many companies can develop.

     Developing and Introducing Proprietary Pharmaceuticals.  We are also
developing proprietary pharmaceuticals that may have some period of exclusivity.
Although the time and cost to develop proprietary pharmaceuticals is usually
much higher than generic products, we believe that such products will produce
higher and more consistent profitability than the typical generic product. To
share the costs of these proprietary products and therefore increase the number
we work on, we often seek strategic partners to assist in the funding,
development and marketing of these products.

     Challenging Patents Protecting Certain Brand Pharmaceuticals.  We also
develop generic equivalents of branded pharmaceuticals protected by patents that
we believe are either invalid, unenforceable or not infringed by our products.
This strategy is an extension of our first strategy because the patents we are
challenging present barriers to entry to companies that do not have the legal
and financial capabilities to assess and challenge such patents. We believe that
the successful development of pharmaceuticals that were perceived by competitors
to be patent protected may allow our products, if approved, to earn higher
profits for a longer period of time.

GENERIC PHARMACEUTICALS

     Our generic product line includes approximately 74 pharmaceutical products
representing various dosage strengths and product forms of 31 chemical entities.
Our products are manufactured in tablet, capsule and powder form.

  Key Generic Products

     The following are descriptions of the products that contribute
significantly to our sales and gross profit. All sales and product data is
derived from industry sources. The market share information below concerning the
number of units of a product dispensed does not correlate to a like percentage
of industry sales due to the lower selling prices for generic products as
compared to branded products.

                                       22
<PAGE>   24

     Tamoxifen.  Tamoxifen is the generic name for AstraZeneca's Nolvadex, which
is used to treat advanced breast cancer, impede the recurrence of tumors
following surgery, and reduce the incidence of breast cancer in women at high
risk for developing the disease. Total U.S. brand and generic sales were
approximately $354 million for the twelve months ended June 30, 2000. Statistics
indicate that one in eight women will get breast cancer during her lifetime, and
each year, more than 180,000 new cases of breast cancer are diagnosed.

     Tamoxifen accounted for approximately 68%, 66% and 68% of our product sales
during fiscal 2000, 1999 and 1998, respectively. Approximately 80% of the total
prescriptions written for Tamoxifen in the United States were filled with our
product during the twelve months ended June 30, 2000. Currently, we are the only
distributor of Tamoxifen in the United States other than its innovator,
AstraZeneca, whose product is sold under a brand name. We distribute Tamoxifen
under an agreement with AstraZeneca, and therefore our gross margins for
Tamoxifen are substantially lower than our gross margins for our manufactured
products. For the twelve months ended June 30, 2000, Tamoxifen was prescribed
approximately 4.3 million times, representing a 9% increase from the prior
twelve-month period.

     In 1993, as a result of a settlement of a patent challenge against
AstraZeneca, we entered into a non-exclusive supply and distribution agreement.
Under the terms of the Tamoxifen agreement, we purchase Tamoxifen directly from
AstraZeneca. Although we are the only non-exclusive distributor, the Tamoxifen
agreement provides that should an additional distributor or distributors be
selected by AstraZeneca, we will be granted terms no less favorable than those
granted to any subsequent distributor.

     We have a tentatively approved ANDA to manufacture Tamoxifen. Therefore, at
the time of patent expiry in August 2002, or upon another company's successful
patent challenge, we plan to manufacture Tamoxifen. Manufacturing Tamoxifen
would lower our costs of goods for this product and would likely improve our
profit margins on Tamoxifen sales. We expect that upon patent expiry, additional
competitors will enter the market. When this occurs, we believe that while our
revenues and market share will be negatively affected, our gross margins on the
sales of Tamoxifen will exceed those we currently earn as a distributor.

     Warfarin Sodium.  Warfarin Sodium is the generic equivalent of DuPont
Pharmaceutical's Coumadin, an anticoagulant that is given to patients with heart
disease and/or high risk of stroke. We launched Warfarin Sodium in July 1997 and
are one of three generic suppliers of the product. Total U.S. generic and brand
sales of Warfarin Sodium were approximately $500 million for the twelve months
ended June 30, 2000. Since launch in July 1997, nearly 11.5 million
prescriptions for our generic product have been dispensed. Since August 2000,
our generic product has captured approximately 26% of all prescriptions written
for the product. Warfarin Sodium accounted for approximately 14%, 15% and 11% of
our product sales during fiscal 2000, 1999 and 1998, respectively. For the
twelve months ended June 30, 2000, Warfarin Sodium was prescribed over 23
million times, representing a 6.7% increase from the prior twelve-month period.

  Generic Product Research and Development


     We are developing more than 60 pharmaceutical products, including 19
generic product ANDAs pending approval at the FDA for products which had total
U.S. brand and generic sales of approximately $3.0 billion for the twelve months
ended June 30, 2000. Fourteen of the 19 generic product ANDAs pending are for
products where there are currently no generic equivalents approved for sale.
These 14 products represent approximately $2.6 billion of the $3.0 billion. Four
of the 19 generic product ANDAs pending approval are Paragraph IV
Certifications. These 4 products represent total U.S. brand and generic sales of
approximately $680 million for the year ended June 30, 2000.



     During the fiscal year ending June 30, 2001, we anticipate filing another
14 to 18 generic product ANDAs for products which had total U.S. brand and
generic sales of approximately $2.3 billion for the twelve months ended June 30,
2000. Twelve of these products currently have no generic equivalents approved
for sale. These 12 products represent total U.S. brand and generic sales of $1.8
billion. In addition, three of these 12 products will be filed with a Paragraph
IV Certification. As discussed elsewhere in this prospectus, we believe this
status may entitle us to as much as 180 days of marketing exclusivity on each of
these products. These three products had total U.S. brand and generic sales of
approximately $900 million for the twelve months ended June 30, 2000.


                                       23
<PAGE>   25

  Generic Product Sales And Marketing

     We market our generic products to customers in the United States and Puerto
Rico through an integrated sales and marketing force that includes a five person
national sales force. The activities of the sales force are supplemented by two
customer service representatives who inform our customers of new products,
process orders and advise on order status and current pricing. All marketing
activities are developed, implemented and coordinated by a product marketing
group consisting of four employees.

     Our generic product customer base includes drug store chains, food chains,
mass merchandisers, wholesalers, distributors, managed care organizations, mail
order accounts, government/military and repackagers. Our products are primarily
sold under the Barr label.

     We sell our generic products primarily to approximately 140 direct
purchasing customers and approximately 105 indirect customers that purchase our
products from wholesalers. In fiscal 2000, 1999 and 1998, McKesson Drug Company,
the nation's largest pharmaceutical wholesaler, accounted for approximately 16%,
14% and 12%, respectively, of product sales. No other customer accounted for
greater than 10% of product sales in any of the last three fiscal years.

     During the past three years the number of companies we sell to has declined
due to industry consolidation. In addition, a number of customers have
instituted buying programs that limit the number of generic suppliers they buy
from. Having fewer customers and changes in customer buying patterns have
increased competition among generic drug marketers. Adding to these market
pressures, managed care organizations have in some cases limited the number of
authorized vendors. In addition, mail-order prescription services, which
typically purchase product from a limited number of suppliers, have continued to
grow. While we believe that we have excellent relationships with our key
customers, a continuation or expansion of the changes described above could
negatively impact our business.

PROPRIETARY PHARMACEUTICALS

     Our proprietary pharmaceutical strategy focuses on developing products that
have some period of market exclusivity. Our strategy is to focus on products
that should take less time and cost less to gain approval. We expect these
products to generate higher gross margins and maintain profitability longer than
most generic products. Our proprietary product development activities are not
focused on discovering new molecules. We pursue candidates in three primary
categories:

     - existing chemical compounds where the development of new forms (liquid
       vs. tablets or different dosages) offer therapeutic or marketing
       advantages;

     - new chemical entities in selected therapeutic categories, including some
       that are marketed in other countries but not currently sold in the United
       States; and

     - patent protected proprietary products in late stages of development.

  Currently Marketed Product


     ViaSpan(R).  In August 2000, we began to market ViaSpan. ViaSpan is a
solution used for hypothermic flushing and storage of organs including kidney,
liver and pancreas at the time of their removal from the donor in preparation
for storage, transportation and eventual transplantation into a recipient. We
acquired the marketing rights to ViaSpan in the United States and Canada from
DuPont Pharmaceuticals Company as part of a co-development and marketing
alliance. Under that agreement, we purchase finished product, sell it under a
Barr label, and pay a royalty to DuPont. We now exclusively market the product
in both the United States and Canada. Since ViaSpan is sold to a relatively
small number of customers, the costs and risks assumed by us to market ViaSpan
are not substantially different from the costs and risks assumed by us to market
any of our other products. Total sales of ViaSpan in the United States and
Canada for the year ended June 30, 2000 were approximately $14 million. ViaSpan
is patent protected through December, 2007.


                                       24
<PAGE>   26

  Proprietary Products under Development

     We have a number of proprietary pharmaceutical products under development
including the six listed in the following chart. These six products are expected
to compete in therapeutic categories, such as oncology and oral contraception,
which have total U.S. annual sales of over $2.5 billion.

                         STATUS OF PROPRIETARY PIPELINE


<TABLE>
<CAPTION>
                                                          ESTIMATED LAUNCH
 PRODUCT        CATEGORY        DOSAGES      STATUS       (QUARTER ENDING)
 -------   ------------------   -------   -------------   ----------------
<S>        <C>                  <C>       <C>             <C>
BRL1            Oncology           2      Filed Q3 CY99     March 2001
                                   2      Filed Q1 CY00     March 2001

Hydroxyurea      Oncology          2        Approved        March 2001

BRL3            Oncology           1      File Q2 CY01      March 2003

CyPat(TM)       Oncology           1        Phase III     September 2003

SEASONALE(TM) Oral Contraceptive    2       Phase III     September 2003

Japanese       Anti-Viral          1        Phase II            TBD
Encephalitis
Vaccine
</TABLE>


  Selected Proprietary Products

     Hydroxyurea.  Hydroxyurea is a antineoplasmic agent used in the treatment
of melanoma, resistant chronic myelocytic leukemia, and recurrent, metastatic,
or inoperable carcinoma of the ovary, as well as certain head and neck cancers.
Total U.S. brand and generic sales for Hydroxyurea were approximately $19.0
million for the year ended June 30, 2000.

     We received FDA approval to market two new dosage strengths of Hydroxyurea,
a 1000 mg tablet and a 250 mg tablet in August 2000 and September 2000,
respectively. Our new dosage strength products are designed to simplify drug
therapy and enhance patient compliance by eliminating the larger number of doses
that patients are currently required to ingest. In addition, our tablets are
scored to allow patients to more accurately adjust their dosage levels.


     We intend to market our product under a new brand name and expect to
complete a marketing agreement with a third party to begin marketing it in the
quarter ending March 2001. A patent application for the product is currently
pending.



     CyPat(TM).  Cyproterone Acetate, which we intend to market in the United
States under the name CyPat, is a steroid that blocks the action of
testosterone. Cyproterone Acetate is not currently approved for marketing in the
United States. Internationally, Cyproterone Acetate is mainly used in the
management of prostate cancer, both as a single agent and in combination with
other products. In addition, it is used as a component of oral contraceptives
and in the treatment of acne, seborrhea, hirsutism in women, precocious puberty
in children, and hypersexuality/deviant behavior in men. Currently, Cyproterone
Acetate is approved for use in over 80 countries throughout Europe, Asia, South
America, Australia, Japan and Canada.


     In July 1999, we submitted an Investigational New Drug, or IND, application
with the FDA for CyPat for the treatment of vasomotor symptoms associated with
prostate cancer therapies and its effects on the patients' quality of life. We
are developing CyPat to relieve the distressing hot flashes that typically
accompany surgical or chemical castration that is often used in the treatment of
prostate cancer. Of the more than 2.4 million patients in the United States who
have been diagnosed with prostate cancer, CyPat may prove suitable for treating
approximately 100,000 patients.

     Among the most common symptoms associated with prostate cancer treatments
such as surgical or chemical castration are hot flashes and night sweats.
Approximately 3 out of 4 patients experience hot flashes and night sweats.
Patients report that hot flashes begin 1 to 12 months after treatment and can
last for up to 3 years or, in some cases, the rest of their lives. Patients
describe hot flashes as a sensation of warmth that spreads from the face, chest
and back and then to the rest of the body. Sweating, a higher pulse rate, and

                                       25
<PAGE>   27

feelings of anxiety, irritability, and queasiness usually go together with hot
flashes and night sweats. Hot flashes and night sweats affect the patients'
psychological equilibrium and adversely affect their quality of life.

     We have initiated a Phase III, randomized, multicenter, placebo-controlled,
double blind clinical trial to study the efficacy and safety of CyPat for the
treatment of hot flashes following surgical or chemical castration in prostate
cancer patients. The clinical studies are expected to include approximately 600
patients at approximately 70 sites across the country. We have enrolled
approximately 200 patients to date. We expect to complete enrollment of our
Phase III clinical trial by December 2001. Pending FDA approval, CyPat could
reach consumers as early as the second half of calendar 2003.

     We believe a five-year new chemical entity exclusivity period will be
granted to CyPat upon FDA approval. A notice of allowance for issuance of a U.S.
patent was received from the Patent and Trademark Office for CyPat. Upon
issuance, this patent will protect CyPat for its use in prostate cancer
patients. We also have additional patents pending and in development for CyPat.

     SEASONALE(TM).  SEASONALE is a patent protected oral contraceptive regimen
which we are developing through an agreement with the Medical College of Hampton
Roads, Eastern Virginia Medical School. Under the proposed SEASONALE regimen,
women would take the product for up to 84 consecutive days, and then would have
a seven-day pill-free interval. By contrast, the majority of oral contraceptive
products currently available in the United States are based on a regimen of 21
treatment days and then seven pill-free days. The proposed SEASONALE regimen is
expected to result in only 4 menstrual cycles per year, or one per "season".
This type of oral contraceptive regimen is preferable to many women whose
lifestyle dictates the convenience of fewer menstrual cycles per year. In
addition, SEASONALE is expected to reduce anemias and iron deficiencies that are
exacerbated by menstrual blood loss. Like all oral contraceptives, we will seek
SEASONALE approval for the indication of prevention of pregnancy.

     Oral contraceptives are the most common method of reversible birth control,
used by up to 65% of women in the United States at some time during their
reproductive years. The oral contraceptives have a very long history with
widespread use attributed to many factors including efficacy in preventing
pregnancy, safety and simplicity in initiation and discontinuation, medical
benefits and relatively low incidence of side effects.

     We have initiated a Phase III clinical trial that is expected to include
approximately 1,500 patients, for which enrollment is nearly complete. The Phase
III study is a prospective, parallel, multicenter, open-label, randomized study
evaluating the use of two dose levels of SEASONALE in a 91-day cycle
administered for approximately 12 months and two dose levels of conventional
oral contraceptive therapy administered for approximately 12 months. We expect
to complete our Phase III clinical trial by December 2001. Pending FDA approval,
SEASONALE could reach consumers as early as the second half of calendar 2003.
The SEASONALE regimen is patent protected through 2017.

  Barr/DuPont Pharmaceuticals Co-Development and Marketing Alliance

     In March 2000, we announced four agreements with the DuPont Pharmaceuticals
Company that resolved a legal dispute between our two companies. The first
agreement with DuPont provides up to $45 million to support the ongoing
development of three proprietary products: the CyPat prostate cancer therapy;
the SEASONALE oral contraceptive; and a third product which we have yet to
disclose. We will be responsible for marketing these three products, although
DuPont may elect to play a role in product co-promotion, and DuPont may receive
royalties based on product sales. Under terms of the second agreement, DuPont
assumes sales and marketing responsibility for a proprietary product that we
developed internally. We expect to launch this product during the second half of
fiscal 2001. The third agreement under this alliance transfers the
responsibility of marketing DuPont's ViaSpan organ transplant preservation agent
to us. Under the fourth agreement, we granted DuPont warrants to purchase 1.5
million shares of our common stock: 750,000 shares at $31.33 per share and
750,000 shares at $38.00 per share. The warrants expire in March 2004 and are
exercisable at any time by DuPont.

                                       26
<PAGE>   28

  Proprietary Product Sales And Marketing

     We are evaluating various strategies for selling and marketing our
proprietary pharmaceuticals. These strategies include any combination of the
following:

     - licensing our proprietary products to other pharmaceutical companies with
       sales organizations sufficient to support our products,

     - entering into co-promotion or contract sales arrangements with respect to
       the products, and

     - establishing our own sales organization and related infrastructure.

     If we license our products or enter into co-promotional or contract sales
arrangements, we would not incur the significant upfront expenses associated
with building a sales organization. However, without our own sales force, we
would retain a lower portion of the profits from the sales of the products.

PATENT CHALLENGES

     We actively challenge the patents protecting branded pharmaceutical
products where we believe such patents are either invalid, unenforceable or not
infringed by our products. We have initiated seven patent challenges: two have
been successfully resolved, four are currently pending and one was unsuccessful.

     Patent challenges are complex, costly and can take three to six years to
complete. They generally require an investment of $8-$10 million per challenge.
As a result, we have in the past and may elect in the future to have partners on
select patent challenges. These arrangements typically provide for a sharing of
the costs and risks, and generally provide for a sharing of the benefits of a
successful outcome.

                            PATENT CHALLENGE HISTORY

<TABLE>
<CAPTION>
PRODUCT (BRAND NAME)                       OUTCOME                           STATUS
--------------------            ------------------------------   ------------------------------
<S>                             <C>                              <C>
Tamoxifen (Nolvadex)            - Resolved                       - Tentatively approved ANDA
                                                                 - Non-exclusive distribution
                                                                   agreement until August 2002
                                                                 - Launch manufactured version
                                                                   upon patent expiry

Ciprofloxacin (Cipro)           - Resolved                       - Tentatively approved ANDA
                                                                 - Contingent supply agreement
                                                                   until December 2003
                                                                 - Right to distribute with
                                                                   partner six months before
                                                                   patent expiry

Fluoxetine (Prozac)             - 2003 Patent Invalidated        - Tentatively approved ANDA
                                - Appeals Pending                - Anticipated launch with
                                                                   partner CY 2001

Norethindrone/ethinyl           - Pending                        - ANDA filed
  estradiol (Ortho-Novum
  7/7/7)

Norgestimate/ethinyl estradiol  - Pending                        - ANDA filed
  (Ortho Tri-Cyclen)

Flecainide Acetate (Tambocor)   - Pending                        - ANDA filed

Zidovudine (Retrovir)           - Unsuccessful                   - Tentatively approved ANDA
                                                                 - Anticipated launch upon
                                                                   patent expiry in 2005
</TABLE>

     Tamoxifen.  In 1993, as a result of a settlement of a patent challenge
against AstraZeneca, we entered into a non-exclusive supply and distribution
agreement. Under the terms of the Tamoxifen agreement, we purchase Tamoxifen
directly from AstraZeneca. Although we are the only non-exclusive distributor,
the Tamoxifen agreement provides that should an additional distributor or
distributors be selected by AstraZeneca, we will be granted terms no less
favorable than those granted to any subsequent distributor.

                                       27
<PAGE>   29

     Ciprofloxacin.  Ciprofloxacin is the generic equivalent of Bayer's Cipro
and is used to treat lower respiratory, skin, bone and joint, and urinary tract
infections. Total U.S. brand and generic sales were approximately $920 million
in the twelve months ended June 30, 2000. In January 1995, we received a
tentative approval of an ANDA for Ciprofloxacin tablets.

     In January 1997, we and Bayer resolved pending patent litigation regarding
Ciprofloxacin. As part of the resolution of the patent challenge we entered into
the Ciprofloxacin agreement, which ends with the expiration of the patent in
December 2003. Under the Ciprofloxacin agreement, Bayer has the option to make
payments to us or must allow us and our partner to purchase Ciprofloxacin from
Bayer at a discount. If Bayer chooses not to provide the product to us, we
expect to recognize revenues ranging from approximately $28-$31 million per year
through our fiscal year ending June 30, 2003.

     Under terms of the Ciprofloxacin agreement, we and Aventis Pharmaceuticals
Inc., formerly Hoechst Marion Roussel, Inc., have the right to distribute the
product six months prior to patent expiry. We expect that our selling price will
be lower than that charged by Bayer.

     Fluoxetine.  Fluoxetine is the generic equivalent of Eli Lilly Company's
antidepressant, Prozac, which had annual sales of approximately $2.5 billion for
the twelve months ended June 30, 2000. We filed our ANDA for Fluoxetine in
February 1996, and were sued for patent infringement by Lilly, initiating the
patent challenge process.


     On August 9, 2000, the U.S. Court of Appeals for the Federal Circuit,
located in Washington, D.C., ruled in favor of our challenge to a Lilly patent
protecting Prozac. The Court unanimously upheld our "double-patenting" claims,
finding that the invention claimed in Lilly's patent already had been the
subject of a previous patent, and thus could not be patent-protected for a
second time. In so ruling, the Court struck down a patent that would have
protected Prozac from generic competition until after December 2003. On October
6, 2000, Lilly filed a petition asking the full panel of the Court of Appeals to
rehear the case. The Court of Appeals has not yet ruled on Lilly's petition, and
Lilly is expected to seek review by the U.S. Supreme Court if the Court of
Appeals does not reverse the present ruling. If the August 9, 2000 ruling is not
reversed, we and our partners expect to introduce a more affordable generic
Prozac product in August 2001, after the expiration of the additional 180 days
of exclusivity Lilly was granted by the FDA for pediatric use. This pediatric
exclusivity will follow the February 2001 expiration of an earlier patent
covering Prozac.


     As the first to file a Paragraph IV Certification that successfully
challenged a listed patent, we believe we are entitled to the 180-day
exclusivity granted under the Hatch-Waxman Act and intend, if necessary, to
vigorously defend our rights. However, we can give no assurances that our
position on the implementation of the FDA's exclusivity rules will prevail. If
we lose some or all of the 180 day exclusivity we expect, the value of the
favorable ruling could be substantially diminished.

     We have two partners on our challenge of Lilly's patents for Prozac,
Apotex, Inc., which is beneficially owned by Dr. Sherman, and Geneva
Pharmaceuticals, Inc. Accordingly, we will share the benefits of the launch of
Fluoxetine with our partners.

     Norethindrone/ethinyl estradiol.  In October 1998, we filed an ANDA seeking
approval from the FDA to market the three different tablet combinations of
norethindrone and ethinyl estradiol, the generic equivalent of Ortho-McNeil
Pharmaceutical Inc.'s Ortho-Novum 7/7/7(R) oral contraceptive regimen. We
notified Ortho pursuant to the provisions of the Hatch-Waxman Act and on January
15, 1999, Ortho filed a patent infringement action in the United States District
Court for the District of New Jersey -- Trenton Division, seeking to prevent us
from marketing the three different tablet combinations of norethindrone and
ethinyl estradiol until U.S. patents expire in 2003. The case is in the
discovery stage. For the twelve months ended June 30, 2000, Ortho-Novum 7/7/7
had total U.S. brand and generic sales of approximately $151 million.

     Norgestimate/ethinyl estradiol.  In February 2000, we filed an ANDA seeking
approval from the FDA to market three different tablet combinations of
norgestimate and ethinyl estradiol, the generic equivalent of Ortho's
Tri-Cyclen(R). We notified Ortho pursuant to the provisions of the Hatch-Waxman
Act and on June 9, 2000, Ortho filed a patent infringement action in the United
States District Court for the District of New Jersey -- Trenton Division,
seeking to prevent us from marketing the three different tablet combinations of
norgestimate and ethinyl estradiol until U.S. patents expire in 2003. The case
is in the discovery stage. For

                                       28
<PAGE>   30

the twelve months ended June 30, 2000, Ortho's Tri-Cyclen had total U.S. brand
and generic sales of approximately $409 million.

     Flecainide Acetate.  In May 2000, we filed an ANDA with the FDA for
Flecainide Acetate tablets, which is sold under its brand name, Tambocor(R).
Following the required notice to 3M Pharmaceuticals, the innovator of the brand,
they sued us in the U.S. District Court in Minnesota to prevent us from
proceeding with the commercialization of the product. This case involves an
alleged infringement by us of raw material patents and not a challenge to the
validity of patents protecting the product. For the twelve months ended June 30,
2000, Tambocor had total U.S. brand and generic sales of approximately $60
million.

     Zidovudine.  Zidovudine is the generic equivalent of Glaxo Wellcome's
Retrovir(R), also known as AZT, a treatment for AIDS. The patent challenge that
followed our filing was resolved unsuccessfully during 1996. However, we
received tentative approval of our ANDA for this product in February 1995, and
anticipate launching our generic equivalent when the patents expire in 2005. For
the twelve months ended June 30, 2000, AZT had total U.S. brand and generic
sales of approximately $40 million.

     Three of the generic product ANDAs we expect to file during the fiscal year
ended June 30, 2001, are patent challenges. These three products represent total
U.S. generic and branded sales of approximately $900 million. In addition, we
are actively evaluating several potential additional challenges both on our own
and as part of collaborations with other companies.

  Patent Challenge Process

     The Hatch-Waxman Act provides incentives for generic pharmaceutical
companies to challenge suspect patents on branded pharmaceutical products. The
legislation recognizes that there is a potential for the improper issuance of
patents by the United States Patent and Trade Office, or PTO, resulting from a
variety of technical, legal or scientific factors. The Hatch-Waxman legislation
places significant burdens on the challenger to ensure that such suits are not
frivolous, but also offers the opportunity for significant financial reward if
successful.

     All of the steps involved in the filing of an ANDA with the FDA, including
research and development, are identical with those steps taken in development of
any generic drug. At the time of filing with the FDA for approval of its version
of the branded product, the generic company files with its ANDA a certification
asserting that the patent is invalid, unenforceable or not infringed. After
receiving notice from the FDA that its application is acceptable for filing, the
generic company sends the patent holder a notice explaining why it believes that
the patents in question are invalid, unenforceable or not infringed. Upon
receipt of the notice from the generic company, the patent holder has 45 days in
which to bring legal action against the generic company. The patent holder,
within certain parameters, has the right to bring suit in any federal district
court. The discovery, trial and appeals process can take two to four years.

     Under the Hatch-Waxman Act, the developer of a bioequivalent drug which is
the first to have its ANDA accepted for filing by the FDA, and whose filing
includes a certification that the patent is invalid, unenforceable or not
infringed, a so-called "Paragraph IV Certification", is awarded a 180-day period
of market exclusivity. That is, the FDA may not approve another generic version
of the product for any company during the first 180 days. This period of market
exclusivity provides the patent challenger with the opportunity to earn a return
on the risks taken and its legal and development costs and to build its market
share to a significant position.

     The FDA adopted regulations implementing the 180-day generic marketing
exclusivity provision of the Hatch-Waxman Act. However, over the years
pharmaceutical companies have successfully challenged different portions of the
FDA's regulations in court. In addition to lawsuits, various pharmaceutical
companies have also filed petitions with the FDA raising questions and concerns
about other aspects of the agency's 180-day exclusivity regulations.

     In light of these successful court challenges, and in response to concerns
raised in various citizens' petitions, the FDA published a new proposed
regulation for implementing the 180-day market exclusivity provision of the
Hatch-Waxman Act in August 1999. Additionally, the FDA announced a proposed
modification to its proposed generic drug exclusivity rule in a March 2000
industry Guidance. In general, the

                                       29
<PAGE>   31

proposed rule and Guidance would make it more difficult for generic
manufacturers to obtain and benefit from the Hatch-Waxman market exclusivity
provisions. Copies of the FDA's proposed rule and Guidance, as well as all
comments submitted in response thereto, can be obtained from the agency.
Reference Docket Nos. 85N-0214 and 00D-1197 when requesting copies.

     We have submitted comments on both the August 1999 proposed rule and the
March 2000 Guidance. At least 20 other entities, including other generic
pharmaceutical companies, innovator companies and pharmaceutical industry
organizations, also submitted comments on these proposals. The vast majority of
these comments recommend that the FDA refrain from adopting the proposed rule,
in whole or in part, because it appears to be contrary to the Hatch-Waxman Act
and the court decisions interpreting the Act. The comments vary significantly as
to what rule the FDA should adopt instead of the one proposed in August 1999,
and modified in March 2000. Given the scope of the proposed rule, the number of
comments and the complexity of the issues contained therein, the FDA's adoption
of final regulations may be delayed for a significant period. Moreover, as noted
above, many companies believe that the FDA cannot lawfully adopt the proposed
rule. While no lawsuits have been filed against the FDA as a result of its
proposed rule, such lawsuits are likely if the agency promulgates a final rule
similar to its proposal. As a result, there is uncertainty as to what rule the
FDA will eventually adopt, whether companies will challenge part or all of the
final rule in court and, if so, how the courts will rule in such lawsuits.

     As such, it is impossible for us to provide a general conclusion as to the
ultimate effect the proposed rule and the Guidance would have on the exclusivity
status of our patent cases, including the August 9, 2000 court ruling in favor
of our challenge to a patent protecting Eli Lilly's Prozac discussed earlier in
this prospectus. If we lose some or all of the 180 days of exclusivity, we
expect the value of the favorable Prozac ruling could be substantially
diminished.

     The federal antitrust authorities, including the FTC, have indicated they
intend to conduct a broad inquiry into anti-competitive practices in the generic
pharmaceutical industry, including practices relating to patent challenges and
settlements. The FTC has investigated several cases in which manufacturers of
pharmaceutical drug products and potential generic competitors have allegedly
entered into anti-competitive agreements to delay generic entry. According to
the FTC, these cases suggest there may be similar anti-competitive agreements
that may eliminate the benefits to consumers of generic drug competition. The
FTC is considering a study to investigate how generic drug competition has
developed in light of certain provisions in the Hatch-Waxman Act that govern
entry of generic drug products into the U.S. market. It is impossible for us to
provide a general conclusion as to the outcome of this FTC inquiry.

     Each patent challenge typically takes three to six years, and can cost
approximately $8-$10 million in legal and product development costs. The process
for initiating a patent challenge begins with the identification of a drug
candidate and evaluation by qualified legal counsel of the patents protecting
that product. We have reviewed a number of challenges and have pursued only
those that we believe offer a high probability of success. Generally, once we
receive a favorable opinion from our patent counsel, we begin the formulation
and development process. Patent challenge product candidates typically must have
several years of remaining patent protection to ensure that the legal process
can be completed prior to patent expiry.

GOVERNMENT REGULATION

     We are subject to extensive regulation by the federal government,
principally by the FDA, and, to a lesser extent, by the DEA and state
governments. The Federal Food, Drug and Cosmetic Act, the Controlled Substances
Act and other federal statutes and regulations govern or influence the testing,
manufacturing, safety, labeling, storage, record keeping, approval, pricing,
advertising and promotion of our products. Non-compliance with applicable
requirements can result in fines, recalls and seizure of products. The FDA has
the authority to revoke drug approvals previously granted.

  ANDA Process

     FDA approval is required before a generic equivalent or a new dosage form
of an existing drug can be marketed. We usually receive approval for such
products by submitting an ANDA to the FDA. When processing an ANDA, the FDA
waives the requirement of conducting complete clinical studies, although it

                                       30
<PAGE>   32

normally requires bioavailability and/or bioequivalence studies.
"Bioavailability" indicates the rate and extent of absorption and levels of
concentration of a drug product in the blood stream needed to produce a
therapeutic effect. "Bioequivalence" compares the bioavailability of one drug
product with another, and when established, indicates that the rate of
absorption and levels of concentration of a generic drug in the body are the
same as the previously approved drug. An ANDA may be submitted for a drug on the
basis that it is the equivalent to a previously approved drug or, in the case of
a new dosage form, is suitable for use for the indications specified.

     Before approving a product, the FDA also requires that our procedures and
operations conform to cGMP regulations, as defined in the U.S. Code of Federal
Regulations. We must follow the cGMP regulations at all times during the
manufacture of our products. To help insure compliance with the cGMP
regulations, we must continue to spend time, money and effort in the areas of
production and quality control to ensure full technical compliance.

     If the FDA believes a company is not in compliance with cGMP, sanctions may
be imposed upon that company including

     - withholding from the company new drug approvals as well as approvals for
       supplemental changes to existing applications;

     - preventing the company from receiving the necessary export licenses to
       export its products; and

     - classifying the company as an "unacceptable supplier" and thereby
       disqualifying the company from selling products to federal agencies.

     We believe we are currently in compliance with cGMP.

     In May of 1992, the Generic Act was enacted. The Generic Act, a result of
the legislative hearings and investigations into the generic drug approval
process, allows the FDA to impose debarment and other penalties on individuals
and companies that commit certain illegal acts relating to the generic drug
approval process. In some situations, the Generic Act requires the FDA to not
accept or review ANDAs for a period of time from a company or an individual that
has committed certain violations. It also provides for temporary denial of
approval of applications during the investigation of certain violations that
could lead to debarment and also, in more limited circumstances, provides for
the suspension of the marketing of approved drugs by the affected company.
Lastly, the Generic Act allows for civil penalties and withdrawal of previously
approved applications. Neither we nor any of our employees have ever been
subject to debarment.

  NDA Process

     FDA approval is required before any new drug can be marketed. An NDA is a
filing submitted to the FDA to obtain approval of a drug not eligible for an
ANDA and must contain complete pre-clinical and clinical safety and efficacy
data or a right of reference to such data. Before dosing a new drug in healthy
human subjects or patients may begin, stringent government requirements for
preclinical data must be satisfied. The pre-clinical data, typically obtained
from studies in animal species, as well as from laboratory studies, are
submitted in an Investigational New Drug, or IND, application, or its equivalent
in countries outside the United States, where clinical trials are to be
conducted. The preclinical data must provide an adequate basis for evaluating
both the safety and the scientific rationale for the initiation of clinical
trials.

     Clinical trials are typically conducted in three sequential phases,
although the phases may overlap.

     - In Phase I, which frequently begins with the initial introduction of the
       compound into healthy human subjects prior to introduction into patients,
       the product is tested for safety, adverse effects, dosage, tolerance
       absorption, metabolism, excretion and other elements of clinical
       pharmacology.

     - Phase II typically involves studies in a small sample of the intended
       patient population to assess the efficacy of the compound for a specific
       indication, to determine dose tolerance and the optimal dose range as
       well as to gather additional information relating to safety and potential
       adverse effects.

     - Phase III trials are undertaken to further evaluate clinical safety and
       efficacy in an expanded patient population at typically dispersed study
       sites, in order to determine the overall risk-benefit ratio of the
       compound and to provide an adequate basis for product labeling.

                                       31
<PAGE>   33

     Each trial is conducted in accordance with certain standards under
protocols that detail the objectives of the study, the parameters to be used to
monitor safety and efficacy criteria to be evaluated. Each protocol must be
submitted to the FDA as part of the IND. In some cases, the FDA allows a company
to rely on data developed in foreign countries, or previously published data,
which eliminates the need to independently repeat some or all of the studies.

     Data from preclinical testing and clinical trials are submitted to the FDA
as an NDA for marketing approval and to other health authorities as a marketing
authorization application. The process of completing clinical trials for a new
drug may take several years and require the expenditure of substantial
resources. Preparing an NDA or marketing authorization application involves
considerable data collection, verification, analysis and expense, and there can
be no assurance that approval from the FDA or any other health authority will be
granted on a timely basis, if at all. The approval process is affected by a
number of factors, primarily the risks and benefits demonstrated in clinical
trials as well as the severity of the disease and the availability of
alternative treatments. The FDA or other health authorities may deny an NDA or
marketing authorization application if the regulatory criteria are not
satisfied, or such authorities may require additional testing or information.

     Even after initial FDA or other health authority approval has been
obtained, further studies, including Phase IV post-marketing studies, may be
required to provide additional data on safety. The post marketing studies could
be used to gain approval for the use of a product as a treatment for clinical
indications other than those for which the product was initially tested. Also,
the FDA or other regulatory authorities require post-marketing reporting to
monitor the adverse effects of the drug. Results of post-marketing programs may
limit or expand the further marketing of the products.

     Further, if there are any modifications to the drug, including changes in
indication, manufacturing process or labeling or a change in the manufacturing
facility, an application seeking approval of such changes must be submitted to
the FDA or other regulatory authority. Additionally, the FDA regulates
post-approval promotional labeling and advertising activities to assure that
such activities are being conducted in conformity with statutory and regulatory
requirements. Failure to adhere to such requirements can result in regulatory
actions that could have a material adverse effect on our business, results of
operations and financial condition.

  DEA

     Because we sell and develop products containing controlled substances, we
must meet the requirements and regulations of the Controlled Substances Act
which are administered by the DEA. These regulations include stringent
requirements for manufacturing controls and security to prevent diversion of or
unauthorized access to the drugs in each stage of the production and
distribution process. The DEA regulates allocation to us of raw materials used
in the production of controlled substances based on historical sales data. We
believe we are currently in compliance with all applicable DEA requirements.

  Medicaid/Medicare

     In November 1990, a law regarding reimbursement for prescribed Medicaid
drugs was passed as part of the Congressional Omnibus Budget Reconciliation Act
of 1990. The law requires drug manufacturers to enter into a rebate contract
with the Federal Government. All generic pharmaceutical manufacturers, whose
products are covered by the Medicaid program, are required to rebate to each
state a percentage (currently 11% in the case of products manufactured by us and
15% for Tamoxifen sold by us) of their average net sales price for the products
in question. We accrue for future estimated rebates in our consolidated
financial statements.

     Over the last year, the extension of prescription drug coverage to all
Medicare recipients has gained support in Congress. The generic pharmaceutical
industry trade associations are actively involved in discussions regarding the
structure and scope of any proposed Medicare prescription drug benefit plans.
We, as an active member in the Generic Pharmaceutical Association, or the GPhA,
the leading trade association representing the generic pharmaceutical industry,
support the development of an industry-wide position on Medicare.

                                       32
<PAGE>   34

     We believe that federal and/or state governments may continue to enact
measures in the future aimed at reducing the costs of drugs to the public. We
cannot predict the nature of such measures or their impact on our profitability.

  Other

     We are also governed by federal, state and local laws of general
applicability, such as laws regulating intellectual property, including patents
and trademarks; working conditions; equal employment opportunity; and
environmental protection.

MANUFACTURING AND FACILITIES

     We have facilities and operations in Pomona and Blauvelt, New York;
Northvale, New Jersey; Forest, Virginia; and Washington, D.C. The following
table presents the facilities owned or leased by us and indicates the location
and type of each of these facilities.

<TABLE>
<CAPTION>
                 SQUARE
LOCATION         FOOTAGE    STATUS                        DESCRIPTION
--------         -------    ------    ----------------------------------------------------
<S>              <C>        <C>       <C>
NEW JERSEY
Northvale......   27,500     Owned    Manufacturing
NEW YORK
Blauvelt.......   48,000    Leased    Corporate Administration
Pomona 1.......   34,000     Owned    R&D, Laboratories, Manufacturing
Pomona 2.......   90,000     Owned    Laboratories, Administrative Offices, Manufacturing,
                                      Warehouse
VIRGINIA
Forest.........  165,500     Owned    Administrative Offices, Manufacturing, Warehouse,
                                      Packaging, Distribution
WASHINGTON
  D.C. ........    1,800    Leased    Corporate Administration
</TABLE>

     Over the past three fiscal years, we have spent approximately $45 million
in capital expenditures primarily to expand manufacturing capacity, extend
research and development activities and strengthen certain competitive
advantages.

LEGAL PROCEEDINGS

  Patent Challenges

     In February 1996, we filed an ANDA seeking approval from the FDA to market
fluoxetine hydrochloride, or Fluoxetine, the generic equivalent of Eli Lilly
Company's Prozac. We notified Lilly pursuant to the provisions of the
Hatch-Waxman Act, and on April 19, 1996, Lilly filed a patent infringement
action in the United States District Court for the Southern District of
Indiana -- Indianapolis Division, seeking to prevent us from marketing
Fluoxetine until a U.S. patent expires in 2003.

     In rulings on pre-trial motions on January 12, 1999, the U.S. District
Court, Southern District of Indiana, dismissed several of the claims that we
presented at the trial. Prior to the trial beginning, we and our two co-
defendants and Lilly reached an agreement pursuant to which we and Lilly agreed
to drop all the remaining claims in the litigation. In addition to dropping
their remaining claims, Lilly made a one-time payment of $4 million to be shared
between us and our co-defendants.

     On August 9, 2000, the U.S. Court of Appeals for the Federal Circuit,
located in Washington, D.C., ruled in favor of our challenge to a Lilly patent
protecting Prozac. The Court unanimously upheld our "double-patenting" claims,
finding that the invention claimed in Lilly's patent already had been the
subject of a previous patent, and thus could not be patent-protected for a
second time. In so ruling, the Court struck down a patent that would have
protected Prozac from generic competition until after December 2003. On October
6, 2000, Lilly filed a petition asking the full panel of the Court of Appeals to
rehear the case. The Court of Appeals has not yet ruled on Lilly's petition, and
Lilly is expected to seek review by the U.S. Supreme Court if the Court of
Appeals does not reverse the present ruling. If the August 9, 2000 ruling is not
reversed, we and our partners, Apotex, Inc. and Geneva Pharmaceuticals, Inc.,
expect to introduce a more

                                       33
<PAGE>   35


affordable generic Prozac product in August 2001, after the expiration of the
additional 180 days of exclusivity Lilly was granted by the FDA for pediatric
use. This pediatric exclusivity will follow the February 2001 expiration of an
earlier patent covering Prozac.


     In October 1998, we filed an ANDA seeking approval from the FDA to market
the three different tablet combinations of norethindrone and ethinyl estradiol,
the generic equivalent of Ortho Pharmaceutical Corporation's Ortho-Novum 7/7/7
oral contraceptive regimen. We notified Ortho pursuant to the provisions of the
Hatch-Waxman Act and on January 15, 1999, Ortho filed a patent infringement
action in the United States District Court for the District of New
Jersey -- Trenton Division, seeking to prevent us from marketing the three
different tablet combinations of norethindrone and ethinyl estradiol until U.S.
patents expire in 2003. The case is in the discovery stage.

     In February 2000, we filed an ANDA seeking approval from the FDA to market
three different tablet combinations of norgestimate and ethinyl estradiol, the
generic equivalent of Ortho-McNeil Pharmaceutical, Inc.'s Tri-Cyclen(R). We
notified Ortho pursuant to the provisions of the Hatch-Waxman Act and on June 9,
2000, Ortho filed a patent infringement action in the United States District
Court for the District of New Jersey -- Trenton Division, seeking to prevent us
from marketing the three different tablet combinations of norgestimate and
ethinyl estradiol until U.S. patents expire in 2003. The case is in the
discovery stage.

     In May 2000, we filed an ANDA with the FDA for Flecainide Acetate tablets
(the brand is Tambocor). Following the required notice to 3M Pharmaceuticals,
the innovator of the brand, they sued us in the U.S. District Court in Minnesota
to prevent us from proceeding with the commercialization of the product. This
case involves an alleged infringement by us of raw material patents and not a
challenge to the validity of patents protecting the product.

  Class Action Lawsuits


     On July 14, 2000, Louisiana Wholesale Drug Co. filed a class action
complaint in the United States District Court for the Southern District of New
York against Bayer Corporation, the Rugby Group and us. The complaint alleges
that we and the Rugby Group agreed with Bayer Corporation not to compete with a
generic version of Cipro, or Ciprofloxacin, pursuant to an agreement between us
and the other defendants involving a prior patent infringement lawsuit. The
plaintiff claims that this agreement violated antitrust laws. The plaintiff
purports to bring claims on behalf of all direct purchasers of Cipro from 1997
to present.



     Currently there are approximately 29 similar putative class actions under
federal law and/or state unfair competition/consumer protection statutes that
have been filed in several Federal District Courts and in several state courts
on behalf of direct and indirect purchasers. Pending consolidation of these
lawsuits in a single district, we have not yet filed responses in any of these
actions.


     On October 6, 2000, a private antitrust class action complaint was filed in
the United States District Court for the Eastern District of New York against
Zeneca, Inc., AstraZeneca Pharmaceuticals L.P. and us. The complaint alleges
that the 1993 settlement of patent litigation between Zeneca, Inc. and us
insulates Zeneca, Inc. and us from generic competition and enables Zeneca, Inc.
and us to charge artificially inflated prices for tamoxifen citrate. The
plaintiff purports to bring claims on behalf of all consumers who purchased
Tamoxifen citrate for personal or family use on or after October 6, 1996. The
plaintiff seeks to recover profits of Zeneca, Inc. and us under the 1993
settlement and treble damages for the alleged antitrust violations.


     Two similar class action complaints have been filed in the Eastern District
of New York and a third complaint has been filed in the Federal Court in
Michigan. We have not yet filed any responses to these actions.


     We believe that each of our agreements with Bayer Corporation and Zeneca,
Inc., respectively, is a valid settlement to a patent dispute and cannot form
the basis of an antitrust claim. Although it is not possible to forecast the
outcome of these matters, we intend to vigorously defend ourselves. It is
anticipated that these matters may take several years to be resolved but an
adverse judgment in either lawsuit could have a material adverse effect on our
business.

  Other Legal Matters

     In February 1998, Invamed, Inc., which has since been acquired by Geneva
Pharmaceuticals, Inc., a division of Novartis AG, named us and several others as
defendants in a lawsuit filed in the United States

                                       34
<PAGE>   36

District Court for the Southern District of New York, charging that we
unlawfully blocked access to the raw material source for Warfarin Sodium. In May
1999, Apothecon, Inc., a division of Bristol-Meyers Squibb, Inc., filed a
similar lawsuit. The two actions have been consolidated.

     We believe that the suits filed against us by Invamed and Apothecon are
without merit and we intend to defend our position vigorously. These actions are
currently in the discovery stage. It is anticipated that this matter may take
several years to be resolved but an adverse judgment could have a material
adverse effect on our business, results of operations and financial condition.

     In 1998 and 1999, we were contacted by the Department of Justice, or DOJ,
regarding our March 1993 resolution of the Tamoxifen patent litigation. We
continue to cooperate with the DOJ in this examination, and believe that the DOJ
will ultimately determine that the settlement was appropriate and a benefit to
consumers. The DOJ has not contacted us about this matter in over a year.

     On June 30, 1999, we received a civil investigative demand and a subpoena
from the Federal Trade Commission, or FTC, that, although not alleging any
wrongdoing, sought documents and data relating to the January 1997 agreements
resolving patent litigation involving Ciprofloxacin hydrochloride, which had
been pending in the U.S. District Court for the Southern District of New York.
The FTC is investigating whether we, through settlement and supply agreements,
have engaged or are engaging in activities in violation of the antitrust laws.
We continue to cooperate with the FTC in this investigation.

     We believe that the patent challenge process under the Hatch-Waxman Act
represents a pro-consumer and pro-competitive alternative to bringing generic
products to market more rapidly than might otherwise be possible. We believe
that once all the facts are considered, and the benefits to consumers are
assessed, that these DOJ and FTC investigations will be resolved. However,
consideration of these matters could take considerable time, and while unlikely,
any adverse judgment in either matter could have a material adverse effect on
our business, results of operations and financial condition.

     As of June 30, 2000, we were involved, as plaintiff and defendant, in other
lawsuits incidental to its business. Our management, based on the advice of
legal counsel, believes that the disposition of such litigation will not have
any significant adverse effect on our business, results of operations and
financial condition.

EMPLOYEES

     Our success depends on our ability to hire and retain highly qualified
scientific and management personnel. We face intense competition for personnel
from other companies, academic institutions, government entities and other
organizations. As of August 31, 2000 we had approximately 605 full-time
employees including 131 in research and development and 386 in production and
quality assurance/control. Approximately 76 are represented by a union that has
a collective bargaining agreement with us. Our current collective bargaining
agreement with our employees, who are represented by Local 2-149 of the Paper,
Allied, Chemical and Energy (PACE) Union International, expires on April 1,
2001. We believe that our relations with our employees are good and we have no
history of work stoppages. Our employees are organized as follows:

<TABLE>
<CAPTION>
                                                              NUMBER OF
DEPARTMENT                                                    EMPLOYEES
----------                                                    ---------
<S>                                                           <C>
Research and Development....................................     131
Administration..............................................      76
Manufacturing Union.........................................      76
Non-Union...................................................     154
Quality.....................................................     151
Sales & Marketing...........................................      17
                                                                 ---
          Total.............................................     605
                                                                 ===
</TABLE>

                                       35
<PAGE>   37

                                   MANAGEMENT

     Our executive officers and directors are as follows:


<TABLE>
<CAPTION>
NAME                                       AGE                    POSITION
----                                       ---                    --------
<S>                                        <C>    <C>
Bruce L. Downey..........................  52     Chairman of the Board and Chief Executive
                                                  Officer
Paul M. Bisaro...........................  39     President and Chief Operating Officer
Timothy P. Catlett.......................  45     Senior Vice President, Sales and
                                                  Marketing
William T. McKee.........................  39     Senior Vice President, Chief Financial
                                                  Officer, Treasurer and Secretary
Mary E. Petit............................  51     Senior Vice President, Proprietary
                                                  Product Development
Martin Zeiger............................  63     Senior Vice President, Strategic Business
                                                  Development and General Counsel
Salah U. Ahmed...........................  46     Senior Vice President, Product
                                                  Development
Edwin A. Cohen...........................  68     Vice Chairman of the Board
Robert J. Bolger.........................  78     Director
Michael F. Florence......................  63     Director
Jacob ("Jack") M. Kay....................  60     Director
Bernard C. Sherman.......................  58     Director
George P. Stephan........................  67     Director
</TABLE>


     BRUCE L. DOWNEY became a member of the Board of Directors in January 1993
and was elected Chairman of the Board and Chief Executive Officer in February of
1994. From January 1993 to December 1999 he served as our President and Chief
Operating Officer. Prior to assuming these positions, from 1981 to 1993, Mr.
Downey was a partner in the law firm of Winston & Strawn and a predecessor firm
of Bishop, Cook, Purcell and Reynolds. Mr. Downey is also a director of Warner
Chilcott, plc.


     PAUL M. BISARO was elected a Director in June 1998 and in December 1999 was
appointed to the position of President and Chief Operating Officer. Previously,
he served as Senior Vice President -- Strategic Business Development and General
Counsel. Prior to joining us in 1992 as General Counsel, Mr. Bisaro was
associated with the law firm of Winston & Strawn and a predecessor firm, Bishop,
Cook, Purcell and Reynolds.


     TIMOTHY P. CATLETT was employed by us in February 1995 as Vice President,
Sales and Marketing. In September 1997, Mr. Catlett was elected to Senior Vice
President, Sales and Marketing. From 1978 through 1993, Mr. Catlett held a
number of positions with the Lederle Laboratories division of American Cyanamid
including Vice President, Cardiovascular Marketing.


     WILLIAM T. MCKEE was employed by us in January 1995 as Director of Finance
and was appointed Treasurer in March 1995. In September 1996, Mr. McKee was
elected to the position of Chief Financial Officer, in December 1997 Mr. McKee
was elected Vice President and in December 1998 was elected Senior Vice
President. Mr. McKee also serves as Secretary. Prior to joining us, Mr. McKee
served as Vice President, Finance for a software development company and from
September 1983 through June 1993, Mr. McKee held management positions in the
accounting firms of Deloitte & Touche LLP and Gramkow & Carnevale, CPAs. Mr.
McKee is a CPA.


     MARY E. PETIT was elected to the position of Senior Vice President,
Proprietary Product Development in December 1999. From September 1996 to
November 1999, Dr. Petit held the position of Senior Vice President, Operations.
Prior to this Dr. Petit held the position of Vice President, Quality. From June
1992 to January 1995, Dr. Petit was Vice President, Quality Management with the
Lederle Laboratories division of American Cyanamid. Dr. Petit held positions of
increasing responsibility during her 12 year tenure with Lederle.

                                       36
<PAGE>   38

     MARTIN ZEIGER was employed by us in December 1999 as Senior Vice President,
Strategic Business Development and General Counsel. Mr. Zeiger joined Barr from
Hoechst Marion Roussel, where he served as a Vice President since the 1995
acquisition by Hoechst of Marion Merrill Dow.


     SALAH U. AHMED was employed by us as Director of Research and Development
in 1993. Dr. Ahmed was named Vice President, Product Development in September
1996 and Senior Vice President, Product Development in October 2000. Before
joining Barr, Dr. Ahmed was a Senior Scientist with Forest Laboratories, Inc.
from 1989 to 1993.


     EDWIN A. COHEN founded Barr in 1970. Mr. Cohen served as President,
Chairman of the Board, and Chief Executive Officer until 1994. In February of
1994, he was elected to the position of Vice Chairman of the Board and became a
consultant to us.

     ROBERT J. BOLGER was elected a Director in February 1988. Mr. Bolger has
been President of Robert J. Bolger Associates, a marketing consulting company
since January 1988. From 1962 through 1987, he served as President of the
National Association of Chain Drug Stores, a major trade association.

     MICHAEL F. FLORENCE was elected a Director in February 1988. Mr. Florence
is President of Sherfam, Inc. and has been since 1989. He is also Vice President
of Shermfin Corp., Vice President of Apotex, Inc. and Vice President of Sherman
Delaware, Inc. From January 1964 through April 1989, Mr. Florence was a partner
in Wm. Eisenberg & Co., Canadian Chartered Accountants. He is President and a
Director of Citadel Gold Mines, Inc., and a Director of Nutrition for Life
International, Inc. Mr. Florence and Dr. Sherman are brothers-in-law.

     JACOB ("JACK") M. KAY was elected a Director in December 1994. Mr. Kay is
President of Apotex, Inc., and also serves as Chair of the Canadian Drug
Manufacturers Association. He is also a Director of Humber River Regional
Hospital (Toronto), Chair of the Canadian Schizophrenia Foundation and a
Director of Cangene Corporation.

     BERNARD C. SHERMAN was Chairman of the Board from July 1981 to January
1993. He remains a Director. Dr. Sherman is Chief Executive Officer and Chairman
of the Board of Apotex, Inc., a Canadian manufacturer of generic drugs. He is
also Chairman of the Board of Cangene Corp., President of Sherman Delaware,
Inc., President of Shermfin Corp.

     GEORGE P. STEPHAN was elected a Director in February 1988. In April 1990,
Mr. Stephan retired as Vice Chairman of Kollmorgan Corporation (NYSE), a
diversified, international technology company in which he served in several
executive capacities for over 20 years. Mr. Stephan was also a director of
Kollmorgan since 1982 and served as Chairman of the Board from 1991 to 1996. He
continued as a director of Kollmorgan until June, 2000, when it was acquired by
Danaher Corporation. From 1994 to April 1999 Mr. Stephan also was a Managing
Director at Stonington Group LLC, financial intermediaries and consultants. He
is currently a business consultant and a director of Sartorius Sports Limited, a
privately held specialty sports retailer.

     Our directors and executive officers are elected annually to serve until
the next annual meeting or until their successors have been elected and
qualified.

                                       37
<PAGE>   39

                              SELLING SHAREHOLDER

     The following table sets forth the beneficial ownership of the shares of
our common stock by the selling shareholder, Sherman Delaware, Inc., as of
September 30, 2000, and as adjusted to reflect the sale of the common stock
being offered hereby, before any exercise of the underwriters' over-allotment
option.

<TABLE>
<CAPTION>
                                                     PRIOR TO OFFERING         AFTER OFFERING
                                                   ---------------------    ---------------------
NAME OF BENEFICIAL OWNER                             NUMBER      PERCENT      NUMBER      PERCENT
------------------------                           ----------    -------    ----------    -------
<S>                                                <C>           <C>        <C>           <C>
Bernard C. Sherman, Ph.D.(1).....................  14,832,038     42.1%     11,832,038     33.1%
</TABLE>

---------------
(1) Consists of 14,832,038 shares held of record by Sherman Delaware, Inc., or
    SDI, which are beneficially owned by Dr. Sherman. A total of 14,496,638 of
    the shares held by SDI are pledged to banks to secure a guaranty made by
    SDI, which does not relate to us. All of the 3,000,000 shares being sold by
    the selling shareholder are held of record by SDI. Dr. Sherman is one of our
    directors. The address for SDI and Dr. Sherman is 150 Signet Drive, Weston,
    Ontario, Canada M9LIT9.

                          DESCRIPTION OF CAPITAL STOCK

     Our Certificate of Incorporation authorizes the issuance of 100,000,000
shares of common stock, par value $.01 per share, of which 35,266,231 shares
were outstanding on September 30, 2000, and 2,000,000 shares of preferred stock,
par value $1.00 per share, of which none is outstanding as of the date of this
prospectus.

     Holders of the common stock are entitled to one vote for each share held of
record, in person or by proxy, at all meetings of the shareholders and on all
propositions before such meetings. The common stock does not have cumulative
voting rights in the election of directors. Holders of the common stock have no
preemptive, subscription, redemption or conversion rights. All outstanding
shares of common stock are fully paid and nonassessable. Holders of common stock
are entitled to such dividends as may be declared by our Board of Directors out
of funds legally available therefor. In the event of our liquidation,
dissolution or winding up, the assets remaining after provision for payment of
creditors and after distribution in full of the preferential amount to be
distributed to the holders of shares of any preferred stock are distributable
pro rata among holders of common stock. The transfer agent and registrar of the
common stock is Continental Stock Transfer & Trust Company, 2 Broadway, New
York, New York 10004.

                                       38
<PAGE>   40

                                  UNDERWRITING

     We and the selling shareholder are offering the shares of common stock
described in this prospectus through a number of underwriters. Banc of America
Securities LLC is the representative of the underwriters. We and the selling
shareholder have entered into an underwriting agreement with the representative.
Subject to the terms and conditions of the underwriting agreement, we and the
selling shareholder have agreed to sell to the underwriters, and each
underwriter has separately agreed to purchase, the number of shares of common
stock listed next to its name below at the public offering price, less the
underwriting discounts and commissions described on the cover page of this
prospectus:

<TABLE>
<CAPTION>
UNDERWRITER                                                   NUMBER OF SHARES
-----------                                                   ----------------
<S>                                                           <C>
Banc of America Securities LLC..............................
                                                                 ---------
          Total.............................................     3,500,000
                                                                 =========
</TABLE>

     The underwriting agreement is subject to a number of terms and conditions
and provides that the underwriters must buy all of the shares if they buy any of
them and that they may reject all or part of any order. The underwriters will
sell the shares to the public when and if the underwriters buy the shares from
us and the selling shareholder. The underwriters expect to deliver the shares of
common stock to investors on                , 2000.

     The underwriters initially will offer the shares to the public at the price
specified on the cover page of this prospectus. The underwriters may allow
selected dealers a concession of not more than $     per share. The underwriters
may also allow, and any other dealers may allow, a concession of not more than
$     per share to some other dealers. If all the shares are not sold at the
public offering price, the underwriters may change the public offering price and
the other selling terms. No change in the public offering price will vary the
proceeds to be received by us as specified on the cover page of this prospectus.
The common stock is offered subject to a number of conditions, including:

     - the receipt and acceptance of the common stock by the underwriters; and

     - the right on the part of the underwriters to reject orders in whole or in
       part.

     The selling shareholder has granted the underwriters an option to buy up to
525,000 additional shares of common stock. These additional shares would cover
sales of shares by the underwriters that exceed the number of shares specified
in the table above. The underwriters may exercise this option at any time within
30 days after the date of this prospectus. If the underwriters exercise this
option, they will each purchase, subject to a number of terms and conditions,
additional shares approximately in proportion to the amounts specified above. If
purchased, the underwriters will offer such additional shares on the same terms
as those on which the 3,500,000 shares are being offered.

     The following table shows the per share and total underwriting discounts
and commissions to be paid to the underwriters. These amounts are shown assuming
no exercise and full exercise of the underwriters' option to purchase additional
shares:

<TABLE>
<CAPTION>
                                                              NO EXERCISE    FULL EXERCISE
                                                              -----------    -------------
<S>                                                           <C>            <C>
Per share underwriting discounts and commissions............
Total underwriting discounts and commissions to be paid by
  us........................................................
Total underwriting discounts and commissions to be paid by
  the selling shareholder...................................
</TABLE>

     The expenses of this offering, not including the underwriting discounts and
commissions, are estimated to be approximately $500,000 and will be paid by us
and the selling shareholder on a pro rata basis determined by the number of
shares sold by each, except that the selling shareholder will pay all legal fees
and expenses incurred by it. Expenses of this offering, exclusive of the
underwriting discounts and commissions, include the SEC filing fee, the NASD
filing fee, New York Stock Exchange listing fees, legal and accounting fees,
printing expenses, transfer agent and registrar fees and other miscellaneous
fees.

                                       39
<PAGE>   41


     We, our executive officers and directors and the selling shareholder have
entered into lock-up agreements with the underwriters. Under these agreements,
subject to exceptions, we may not issue any new shares of common stock, and our
executive officers and directors, certain shareholders, and the selling
shareholder may not offer, sell, contract to sell or otherwise dispose of or
hedge any common stock or securities convertible into or exchangeable for shares
of common stock. These restrictions will be in effect for a period of 90 days
after the date of this prospectus. At any time and without notice, Banc of
America Securities LLC may, in its sole discretion, release all or some of the
securities from these lock-up agreements.


     We and the selling shareholder will indemnify the underwriters against some
liabilities, including some liabilities under the Securities Act of 1933. If we
or the selling shareholder are unable to provide this indemnification, we and
the selling shareholder will contribute to payments the underwriters may be
required to make in respect of those liabilities on a pro-rata basis determined
by the number of shares sold by each.

     One or more of the underwriters may facilitate the marketing of this
offering online, either directly or through one or more of their affiliates. In
those cases, prospective investors may view offering terms and a prospectus
online and, depending upon the particular underwriter, place orders online or
through their financial advisors.


     Banc of America Securities LLC and its affiliates have engaged in, and may
engage in, transactions with, services for, or have owned, currently own or may
own, equity or equity-like securities of us or our subsidiaries in the ordinary
course of their businesses. Banc of America Securities LLC and its affiliates
have received, and may receive, customary fees for its services.


     In order to facilitate the offering of the common stock, the underwriters
may engage in transactions that stabilize, maintain or otherwise affect the
price of the common stock. Specifically, the underwriters may sell more shares
than they are obligated to purchase under the underwriting agreement, creating a
short position. A short sale is "covered" if the short position is no greater
than the number of shares available for purchase by the underwriters under the
over-allotment option. The underwriters can close out a covered short sale by
exercising the over-allotment option or purchasing shares in the open market. In
determining the source of shares to close out a covered short sale, the
underwriters will consider, among other things, the open market price of shares
compared to the price available under the over-allotment option. The
underwriters may also sell shares in excess of the over-allotment option,
creating a "naked" short position. The underwriters must close out any naked
short position by purchasing shares in the open market. A naked short position
is more likely to be created if the underwriters are concerned that there may be
a downward pressure on the price of the common stock in the open market after
pricing that could adversely affect investors who purchase in the offering. In
addition, to stabilize the price of the common stock, the underwriters may bid
for, and purchase, shares of common stock in the open market. Finally, the
underwriting syndicate may reclaim selling concessions allowed to an underwriter
or a dealer for distributing the common stock in the offering, if the syndicate
repurchases previously distributed common stock to cover syndicate short
positions or to stabilize the price of the common stock. Any of these activities
may stabilize or maintain the market price of the common stock above independent
market levels. The underwriters are not required to engage in these activities,
and may end any of these activities at any time.

                                       40
<PAGE>   42

                                 LEGAL MATTERS

     The validity of the shares of common stock offered by us hereby and certain
legal matters will be passed upon for us by Winston & Strawn, Chicago, Illinois.
Certain legal matters will be passed upon for the underwriters by Cahill Gordon
& Reindel, New York, New York.

                                    EXPERTS

     The financial statements for each of the three years ended June 30, 1998,
1999 and 2000 included and incorporated by reference in this prospectus have
been audited by Deloitte & Touche LLP, independent auditors, as stated in their
reports which are included and incorporated by reference herein and have been so
included in reliance upon the reports of such firm given upon their authority as
experts in accounting and auditing.

                      WHERE YOU CAN FIND MORE INFORMATION

     We file annual, quarterly and special reports, proxy statements and other
information with the SEC. Our filings are available to the public over the
internet at the SEC's web site at http://www.sec.gov. You may also read and copy
any document we file at the SEC's Public Reference Rooms in Washington, D.C.,
New York, New York and Chicago, Illinois. The Public Reference Room in
Washington D.C. is located at 450 Fifth Street, N.W. Please call the SEC at
1-800-SEC-0330 for further information on the Public Reference Rooms.
Information concerning us is also available for inspection at the offices of the
New York Stock Exchange, Inc. Reports Section, 20 Broad Street, New York, New
York 10005.


     The SEC allows us to "incorporate by reference" the information we file
with it, which means that we can disclose important information to you by
referring you to those documents. The information incorporated by reference is
an important part of this prospectus, and information that we file later with
the SEC will automatically update and supersede this information. We incorporate
by reference:



     - our Annual Report on Form 10-K for the fiscal year ended June 30, 2000,



     - our Proxy Statement dated September 25, 2000,



     - our Quarterly Report on Form 10-Q for the quarterly period ended
      September 30, 2000, and



     - any future filings made with the SEC under Section 13(a), 13(c), l4, or
       15(d) of the Securities Exchange Act of 1934 after the date of this
       prospectus until the termination of the offering.


     This prospectus is part of a registration statement on Form S-3 filed with
the SEC under the Securities Act of 1933. This prospectus does not contain all
of the information set forth in the registration statement. You should read the
registration statement for further information about us and our common stock.
You may request a copy of these filings at no cost. Please direct your request
to:

                               Barr Laboratories, Inc.
                               2 Quaker Road, PO Box D 2900
                               Pomona, New York 10970-0519
                               (914) 362-1100

     You should rely only on the information incorporated by reference or
provided in this prospectus or any prospectus supplement. We have not authorized
anyone else to provide you with different information. You should not assume
that the information in this prospectus or any prospectus supplement is accurate
as of any date other than the date on the front page of those documents.

                                       41
<PAGE>   43

                            BARR LABORATORIES, INC.

                   INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

<TABLE>
<S>                                                           <C>
Independent Auditors' Report................................  F-2
Consolidated Balance Sheets as of June 30, 1999 and 2000....  F-3
Consolidated Statements of Operations for the years ended
  June 30, 1998, 1999 and 2000..............................  F-4
Consolidated Statements of Shareholders' Equity for the
  years ended June 30, 1998, 1999 and 2000..................  F-5
Consolidated Statements of Cash Flows for the years ended
  June 30, 1998, 1999 and 2000..............................  F-6
Notes to the Consolidated Financial Statements..............  F-7
</TABLE>

                                       F-1
<PAGE>   44

                          INDEPENDENT AUDITORS' REPORT

To the Board of Directors and Shareholders of
Barr Laboratories, Inc.:

     We have audited the accompanying consolidated balance sheets of Barr
Laboratories, Inc. and subsidiaries (the "Company") as of June 30, 2000 and
1999, and the related consolidated statements of operations, shareholders'
equity, and cash flows for each of the three years in the period ended June 30,
2000. These consolidated financial statements are the responsibility of the
Company's management. Our responsibility is to express an opinion on these
financial statements based on our audits.

     We conducted our audits in accordance with auditing standards generally
accepted in the United States of America. Those standards require that we plan
and perform the audit to obtain reasonable assurance about whether the financial
statements are free of material misstatement. An audit includes examining, on a
test basis, evidence supporting the amounts and disclosures in the financial
statements. An audit also includes assessing the accounting principles used and
significant estimates made by management, as well as evaluating the overall
financial statement presentation. We believe that our audits provide a
reasonable basis for our opinion.

     In our opinion, such consolidated financial statements present fairly, in
all material respects, the financial position of Barr Laboratories, Inc. and
subsidiaries at June 30, 2000 and 1999, and the results of their operations and
their cash flows for each of the three years in the period ended June 30, 2000
in conformity with accounting principles generally accepted in the United States
of America.

DELOITTE & TOUCHE LLP

Parsippany, New Jersey
August 7, 2000

                                       F-2
<PAGE>   45

                            BARR LABORATORIES, INC.

                          CONSOLIDATED BALANCE SHEETS

<TABLE>
<CAPTION>
                                                               JUNE 30,       JUNE 30,
                                                                 2000           1999
                                                              -----------    -----------
                                                              (IN THOUSANDS OF DOLLARS,
                                                                EXCEPT SHARE AMOUNTS)
<S>                                                           <C>            <C>
ASSETS
Current assets:
  Cash and cash equivalents.................................   $155,922       $ 94,867
  Marketable securities.....................................         96          8,127
  Accounts receivable (including receivables from related
     parties of $865 in 2000 and $1,051 in 1999) less
     allowances of $4,140 and $2,670 in 2000 and 1999,
     respectively...........................................     54,669         49,884
  Other receivables.........................................     23,811         16,093
  Inventories...............................................     79,482         77,613
  Prepaid expenses..........................................      1,428          1,556
                                                               --------       --------
     Total current assets...................................    315,408        248,140
Property, plant and equipment, net..........................     95,296         93,764
Other assets................................................     13,149          5,986
                                                               --------       --------
     Total assets...........................................   $423,853       $347,890
                                                               ========       ========
LIABILITIES AND SHAREHOLDERS' EQUITY
Current liabilities:
  Accounts payable (including payables to a related party of
     $497 and $632 in 2000
     and 1999, respectively)................................   $ 94,529       $ 88,982
  Accrued liabilities.......................................     11,079          9,118
  Deferred income taxes.....................................      1,036            833
  Current portion of long-term debt.........................      1,924          2,165
  Income taxes payable......................................      3,948            179
                                                               --------       --------
     Total current liabilities..............................    112,516        101,277
Long-term debt..............................................     28,084         30,008
Other liabilities...........................................        519            127
Deferred income taxes.......................................        566          2,771
Commitments & Contingencies
Shareholders' equity
  Preferred stock, $1 par value per share; authorized
     2,000,000 shares; none issued
  Common stock, $.01 par value per share; authorized
     100,000,000; issued 35,004,869 and 22,923,583 in 2000
     and 1999, respectively.................................        350            229
  Additional paid-in capital................................     99,881         76,903
  Retained earnings.........................................    180,034        137,846
  Accumulated other comprehensive income (loss).............      1,916         (1,258)
                                                               --------       --------
                                                                282,181        213,720
  Treasury stock at cost: 176,932 and 117,955 shares in 2000
     and 1999, respectively.................................        (13)           (13)
                                                               --------       --------
     Total shareholders' equity.............................    282,168        213,707
                                                               --------       --------
     Total liabilities and shareholders' equity.............   $423,853       $347,890
                                                               ========       ========
</TABLE>

        See accompanying notes to the consolidated financial statements.
                                       F-3
<PAGE>   46

                            BARR LABORATORIES, INC.

                     CONSOLIDATED STATEMENTS OF OPERATIONS
                FOR THE YEARS ENDED JUNE 30, 2000, 1999 AND 1998

<TABLE>
<CAPTION>
                                                                2000           1999           1998
                                                             -----------    -----------    -----------
                                                             (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
<S>                                                          <C>            <C>            <C>
Revenues:
  Product sales (including sales to related parties of
     $7,479, $6,852 and $7,537 in 2000, 1999 and 1998,
     respectively).........................................   $440,110       $415,950       $346,638
  Development and other revenue............................     14,584             --             --
  Proceeds from supply agreements..........................     27,584         28,083         30,666
                                                              --------       --------       --------
     Total revenues........................................    482,278        444,033        377,304
Costs and expenses:
  Cost of sales............................................    315,652        301,393        266,002
  Selling, general and administrative......................     42,479         40,439         38,990
  Research and development.................................     40,451         22,593         18,955
  Agreement expenses.......................................     18,940             --             --
                                                              --------       --------       --------
Earnings from operations...................................     64,756         79,608         53,357
Interest income............................................      5,092          3,180          2,176
Interest expense...........................................      2,405          2,697            858
Other income (expense).....................................        347             36            (17)
                                                              --------       --------       --------
Earnings before income taxes and extraordinary loss........     67,790         80,127         54,658
Income tax expense.........................................     25,448         30,877         21,148
                                                              --------       --------       --------
Earnings before extraordinary loss.........................     42,342         49,250         33,510
Extraordinary loss on early extinguishment of debt, net of
  taxes....................................................         --             --           (790)
                                                              --------       --------       --------
Net earnings...............................................   $ 42,342       $ 49,250       $ 32,720
                                                              ========       ========       ========
Earnings per common share:
  Earnings before extraordinary loss.......................   $   1.23       $   1.45       $   1.02
  Net earnings.............................................   $   1.23       $   1.45       $   1.00
                                                              ========       ========       ========
Earnings per common share-assuming dilution:
  Earnings before extraordinary loss.......................   $   1.19       $   1.39       $   0.96
  Net earnings.............................................   $   1.19       $   1.39       $   0.94
                                                              ========       ========       ========
Weighted average shares....................................     34,406         33,877         32,716
                                                              ========       ========       ========
Weighted average shares-assuming dilution..................     35,715         35,373         34,785
                                                              ========       ========       ========
</TABLE>

        See accompanying notes to the consolidated financial statements.
                                       F-4
<PAGE>   47

                            BARR LABORATORIES, INC.

                CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY
                FOR THE YEARS ENDED JUNE 30, 2000, 1999 AND 1998

<TABLE>
<CAPTION>
                              COMMON          ADDITIONAL                  ACCUMULATED           TREASURY           TOTAL
                               STOCK           PAID-IN     RETAINED   OTHER COMPREHENSIVE        STOCK         SHAREHOLDERS'
                          SHARES     AMOUNT    CAPITAL     EARNINGS      (LOSS) INCOME      SHARES    AMOUNT      EQUITY
                        ----------   ------   ----------   --------   -------------------   -------   ------   -------------
                                                  (IN THOUSANDS OF DOLLARS, EXCEPT SHARE AMOUNTS)
<S>                     <C>          <C>      <C>          <C>        <C>                   <C>       <C>      <C>
BALANCE, JUNE 30,
  1997................  21,446,053    $214     $46,061     $ 55,876         $    --         117,955    $(13)     $102,138
Comprehensive income:
  Net earnings........                                       32,720                                                32,720
  Unrealized loss on
    marketable
    securities, net of
    tax of $604.......                                                         (942)                                 (942)
                                                                                                                 --------
Total comprehensive
  income..............                                                                                             31,778
Issuance of common
  stock for stock
  offering............     430,000       4      14,517                                                             14,521
Stock issuance
  costs...............                            (353)                                                              (353)
Issuance of common
  stock for exercised
  stock options and
  employees' stock
  purchase plans......     548,592       6       7,839                                                              7,845
                        ----------    ----     -------     --------         -------         -------    ----      --------
BALANCE, JUNE 30,
  1998................  22,424,645     224      68,064       88,596            (942)        117,955     (13)      155,929
Comprehensive income:
  Net earnings........                                       49,250                                                49,250
  Unrealized loss on
    marketable
    securities, net of
    tax of $238.......                                                         (316)                                 (316)
                                                                                                                 --------
Total comprehensive
  income..............                                                                                             48,934
Issuance of common
  stock for exercised
  stock options and
  employees' stock
  purchase plans......     498,938       5       8,839                                                              8,844
                        ----------    ----     -------     --------         -------         -------    ----      --------
BALANCE, JUNE 30,
  1999................  22,923,583     229      76,903      137,846          (1,258)        117,955     (13)      213,707
Comprehensive income:
  Net earnings........                                       42,342                                                42,342
  Unrealized gain on
    marketable
    securities, net of
    tax of $2,126.....                                                        3,174                                 3,174
                                                                                                                 --------
Total comprehensive
  income..............                                                                                             45,516
Issuance of common
  stock for exercised
  stock options and
  employees' stock
  purchase plans......     426,947       5       6,587                                                              6,592
Issuance of
  warrants............                          16,418                                                             16,418
Stock split
  (3-for-2)...........  11,654,339     116         (27)        (154)             --          58,977      --           (65)
                        ----------    ----     -------     --------         -------         -------    ----      --------
BALANCE, JUNE 30,
  2000................  35,004,869    $350     $99,881     $180,034         $ 1,916         176,932    $(13)     $282,168
                        ==========    ====     =======     ========         =======         =======    ====      ========
</TABLE>

        See accompanying notes to the consolidated financial statements.
                                       F-5
<PAGE>   48

                            BARR LABORATORIES, INC.

                     CONSOLIDATED STATEMENTS OF CASH FLOWS
                FOR THE YEARS ENDED JUNE 30, 2000, 1999 AND 1998

<TABLE>
<CAPTION>
                                                                2000       1999       1998
                                                              --------   --------   --------
                                                                (IN THOUSANDS OF DOLLARS)
<S>                                                           <C>        <C>        <C>
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
Net earnings................................................  $ 42,342   $ 49,250   $ 32,720
Adjustments to reconcile net earnings to net cash provided
  by operating activities:
  Depreciation and amortization.............................    10,420      9,306      5,521
  Deferred income tax (benefit) expense.....................    (4,127)     1,834      3,585
  Write-off of deferred financing fees associated with early
     extinguishment of debt.................................        --         --        195
  (Gain) loss on sale of assets.............................      (470)        11         63
  Loss (gain) on sale of marketable securities..............       122          6         (2)
  Fair value of warrants issued.............................    16,418         --         --
  Changes in assets and liabilities:
  (Increase) decrease in:
     Accounts receivable and other receivables, net.........   (12,503)    (4,550)   (26,195)
     Inventories............................................    (1,869)    (3,236)   (18,161)
     Prepaid expenses.......................................       128       (750)      (238)
     Other assets...........................................    (1,718)      (492)      (389)
  Increase (decrease) in:
     Accounts payable, accrued liabilities and other........     8,015    (14,633)    34,940
     Income taxes payable...................................     3,769     (3,178)       963
                                                              --------   --------   --------
  Net cash provided by operating activities.................    60,527     33,568     33,002
                                                              --------   --------   --------
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Purchases of property, plant and equipment..................   (12,086)   (12,333)   (20,431)
Proceeds from sale of property, plant and equipment.........       287          1        248
Purchases of strategic investments..........................        --     (2,800)    (4,069)
Sales (purchases) of marketable securities, net.............     7,965       (901)    (7,291)
                                                              --------   --------   --------
     Net cash used in investing activities..................    (3,834)   (16,033)   (31,543)
                                                              --------   --------   --------
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Principal payments on long-term debt........................    (2,165)    (1,968)   (14,939)
Proceeds from loans.........................................        --         --     30,000
Net borrowings under line of credit.........................        --     (2,500)     2,500
Stock issuance costs........................................        --         --       (353)
Proceeds from stock offering................................        --         --     14,521
Fees associated with stock split............................       (65)        --         --
Proceeds from exercise of stock options and employee stock
  purchases.................................................     6,592      8,844      7,845
                                                              --------   --------   --------
  Net cash provided by financing activities.................     4,362      4,376     39,574
                                                              --------   --------   --------
  Increase in cash and cash equivalents.....................    61,055     21,911     41,033
Cash and cash equivalents, beginning of year................    94,867     72,956     31,923
                                                              --------   --------   --------
Cash and cash equivalents, end of year......................  $155,922   $ 94,867   $ 72,956
                                                              ========   ========   ========
SUPPLEMENTAL CASH FLOW DATA:
Cash paid during the year
  Interest, net of portion capitalized......................  $  2,438   $  2,727   $    855
  Income taxes..............................................    24,946     27,869     13,254
Non-cash transactions
  Write-off of equipment & leasehold improvements related to
     closed facility........................................  $    115   $     83   $     --
</TABLE>

        See accompanying notes to the consolidated financial statements.
                                       F-6
<PAGE>   49

                            BARR LABORATORIES, INC.

                 NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
              (in thousands of dollars, except per share amounts)

(1) SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

  (a) Principles of Consolidation and Other Matters

     The consolidated financial statements include the accounts of Barr
Laboratories, Inc. (the "Company") and its wholly-owned subsidiaries. All
significant intercompany balances and transactions have been eliminated in
consolidation.

     Sherman Delaware, Inc. owned 42.6% of the outstanding common stock of the
Company at June 30, 2000. Dr. Bernard C. Sherman is a principal shareholder of
Sherman Delaware, Inc. and a Director of Barr Laboratories, Inc.

     Certain amounts in the prior year's financial statements have been
reclassified to conform with the current year presentation.

  (b) Credit and Market Risk

     Financial instruments that potentially subject the Company to credit risk
consist principally of interest-bearing investments and trade receivables. The
Company performs ongoing credit evaluations of its customers' financial
condition and generally requires no collateral from its customers.

  (c) Cash and Cash Equivalents

     Cash equivalents consist of short-term, highly liquid investments
(primarily market auction securities with interest rates that are re-set in
intervals of 28 to 49 days) which are readily convertible into cash at par value
(cost). As of June 30, 2000 and 1999, $74,011 and $28,283, respectively, of the
Company's cash was held in an interest-bearing escrow account. Such amounts
represent the portion of the Company's payable balance with the Innovator of
Tamoxifen, which the Company has decided to secure in connection with its cash
management policy.

     In December 1995, the Company and the Innovator of Tamoxifen entered into
an Alternative Collateral Agreement ("Collateral Agreement") which suspends
certain sections of the Supply and Distribution Agreement ("Distribution
Agreement") entered into by both parties in March 1993. Under the Collateral
Agreement, extensions of credit to the Company are no longer required to be
secured by a letter of credit or cash collateral. However, the Company may at
its discretion maintain a balance in the escrow account based on its short-term
cash requirements. All remaining terms of the Distribution Agreement remain in
place. In return for the elimination of the cash collateral requirement and in
lieu of issuing letters of credit, the Company has agreed to pay the Innovator
monthly interest based on the average unsecured monthly Tamoxifen payable
balance, as defined in the Collateral Agreement, and maintain compliance with
certain financial covenants. The Company was in compliance with such covenants
at June 30, 2000.

  (d) Inventories

     Inventories are stated at the lower of cost, determined on a first-in,
first-out (FIFO) basis, or market.

  (e) Property, Plant and Equipment

     Property, plant and equipment is recorded at cost. Depreciation is recorded
on a straight-line basis over the estimated useful lives of the related assets.
Leasehold improvements are amortized on a straight-line basis over the shorter
of their useful lives or the terms of the respective leases.

                                       F-7
<PAGE>   50
                            BARR LABORATORIES, INC.

         NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

     The estimated useful lives of the major classification of depreciable
assets are:

<TABLE>
<CAPTION>
                                                              YEARS
                                                              -----
<S>                                                           <C>
Buildings...................................................   45
Building improvements.......................................   10
Machinery and equipment.....................................  3-10
Leasehold improvements......................................  3-10
</TABLE>

     Maintenance and repairs are charged to operations as incurred; renewals and
betterments are capitalized.

  (f) Research and Development

     Research and development costs, which consist principally of product
development costs, are charged to operations as incurred.

  (g) Earnings Per Share

     On May 31, 2000, the Company's Board of Directors declared a 3-for-2 stock
split effected in the form of a 50% stock dividend. Approximately 11.6 million
additional shares of common stock were distributed on June 29, 2000 to
shareholders of record as of June 12, 2000. All applicable prior year share and
per share amounts have been adjusted for the stock split.

     The following is a reconciliation of the numerators and denominators used
to calculate Earnings per common share ("EPS") before extraordinary loss in the
Consolidated Statements of Operations:

<TABLE>
<CAPTION>
                                                               2000       1999       1998
                                                              -------    -------    -------
<S>                                                           <C>        <C>        <C>
EARNINGS PER COMMON SHARE:
Earnings before extraordinary loss (numerator)..............  $42,342    $49,250    $33,510
Weighted average shares (denominator).......................   34,406     33,877     32,716
Earnings before extraordinary loss..........................  $  1.23    $  1.45    $  1.02
                                                              =======    =======    =======
EARNINGS PER COMMON SHARE -- ASSUMING DILUTION:
Earnings before extraordinary loss (numerator)..............  $42,342    $49,250    $33,510
Weighted average shares.....................................   34,406     33,877     32,716
Effect of dilutive options..................................    1,309      1,496      2,069
                                                              -------    -------    -------
Weighted averages shares -- assuming dilution
  (denominator).............................................   35,715     35,373     34,785
Earnings before extraordinary loss..........................  $  1.19    $  1.39    $  0.96
                                                              =======    =======    =======
</TABLE>

     During the years ended June 30, 2000, 1999 and 1998, there were 1,560, 819
and 289 respectively, of outstanding options and warrants that were not included
in the computation of diluted EPS, because their respective exercise prices were
greater than the average market price of the common stock for the period.

  (h) Deferred Financing Fees

     All debt issuance costs are being amortized on a straight-line basis over
the life of the related debt, which matures in 2002, 2004 and 2007. The
unamortized amounts of $238 and $305 at June 30, 2000 and 1999, respectively,
are included in other assets in the Consolidated Balance Sheets.

     In connection with the November 1997 early extinguishment of the then
remaining $14,400 10.15% Senior Secured Notes, the Company wrote off $195 in
deferred financing fees in the year ended June 30, 1998 (See Note 8 to the
Consolidated Financial Statements).

                                       F-8
<PAGE>   51
                            BARR LABORATORIES, INC.

         NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

  (i) Fair Value of Financial Instruments

     Cash, Accounts Receivable, Other Receivables and Accounts Payable -- The
carrying amounts of these items are a reasonable estimate of their fair value.

     Marketable Securities -- Marketable securities are recorded at their fair
value (See Note 7 to the Consolidated Financial Statements).

     Other Assets -- Investments in strategic collaborations that do not have a
readily determinable market value are recorded at cost as it is a reasonable
estimate of fair value (See Note 7 to the Consolidated Financial Statements).

     Long-Term Debt -- The fair value at June 30, 2000 and 1999 is estimated at
$30 million and $32 million, respectively. Estimates were determined by
discounting the future cash flows using rates currently available to the
Company.

     The fair value estimates presented herein are based on pertinent
information available to management as of June 30, 2000. Although management is
not aware of any factors that would significantly affect the estimated fair
value amounts, such amounts have not been comprehensively revalued for purposes
of these financial statements since that date, and current estimates of fair
value may differ significantly from the amounts presented herein.

  (j) Use of Estimates in the Preparation of Financial Statements

     The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and use
assumptions that affect certain reported amounts and disclosures; actual results
may differ substantially.

  (k) Revenue Recognition


     The Company recognizes product sales revenue when goods are shipped.
Development and other revenue relate to amounts from the DuPont Agreements (see
Note 2), which are earned as Barr performs the related research and development
activities. Amounts received under these agreements are not refundable. Supply
agreement revenues are recognized when certain contingencies are met (see Note
3). For the period January 1, 2000 through June 30, 2000, development and other
revenue also includes Transition Revenues earned under the ViaSpan Agreement
(see Note 2).


  (l) Segment Reporting

     The Company operates in one reportable segment -- the development,
manufacture and marketing of generic and proprietary pharmaceuticals. The
Company's chief operating decision-maker reviews operating results on a
consolidated company basis.

     The Company's manufacturing plants are located in New Jersey, New York and
Virginia and its products are sold throughout the United States and Puerto Rico,
primarily to wholesale and retail distributors. In fiscal 2000, 1999 and 1998, a
customer accounted for approximately 16%, 14% and 12% of product sales,
respectively. No other customer accounted for greater than 10% of product sales
in any of the last three fiscal years.

  (m) Asset Impairment

     The Company reviews the carrying value of its property, plant and equipment
for impairment whenever events and circumstances indicate that the carrying
value of an asset may not be recoverable from the estimated future cash flows
expected to result from its use and eventual disposition. In cases where

                                       F-9
<PAGE>   52
                            BARR LABORATORIES, INC.

         NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

undiscounted expected future cash flows are less than the carrying value, an
impairment loss is recognized equal to an amount by which the carrying value
exceeds the fair value of assets.

  (n) New Accounting Pronouncements

     Derivative Instruments

     On June 15, 1998, the Financial Accounting Standards Board ("FASB") issued
Statement of Financial Accounting Standards ("SFAS") No. 133, "Accounting for
Derivative Instruments and Hedging Activities," which requires that companies
recognize all derivatives as either assets or liabilities on the balance sheet
and measure those instruments at fair value. In June 1999, the FASB issued SFAS
No. 137, "Accounting for Derivative Instruments and Hedging
Activities -- Deferral of the Effective Date of FASB Statement No. 133," which
defers the effective date of SFAS No. 133 until the Company's fiscal year 2001.
The Company has evaluated this statement and determined that implementation will
not have a material impact on the Company's existing accounting policies and
financial reporting disclosures.

     Revenue Recognition

     In December 1999, the Securities and Exchange Commission ("SEC") staff
issued Staff Accounting Bulletin ("SAB") 101, "Revenue Recognition in Financial
Statements" which summarizes certain of the SEC staff's views in applying
generally accepted accounting principles to revenue recognition in financial
statements. The effective date of this bulletin is no later than the fourth
fiscal quarter of fiscal years beginning after December 15, 1999. The Company is
currently evaluating this bulletin and its impact on the Company's existing
accounting policies and financial reporting disclosures.

(2) DUPONT PHARMACEUTICALS COMPANY STRATEGIC ALLIANCE

     On March 20, 2000, the Company signed definitive agreements to establish a
strategic relationship with DuPont Pharmaceuticals Company ("DuPont") to
develop, market and promote several proprietary products and to terminate all
litigation between the two companies.

  Development and Other Revenue


     In connection with a proprietary product development funding agreement
("Product Development Agreement"), DuPont may invest up to $45,000 over three
years to support the development of three of the Company's proprietary products.
As Barr incurs qualified research and development expenses, as defined in the
Product Development Agreement, Barr records such expenses as R&D and invoices
and records the related revenue from DuPont as development and other revenue.
Upon approval of the products, Barr will be responsible for marketing the
products and DuPont may receive royalties based on product sales. In connection
with the Product Development Agreement, the Company recorded $8,000 as
development and other revenue for the year ended June 30, 2000.



     In a second agreement, DuPont will assume responsibility for sales and
marketing support of an undisclosed proprietary product that Barr expects to
launch in the first calendar quarter of 2001 ("Development and Marketing
Agreement"). In connection with this Development and Marketing Agreement, Barr
receives payments and records revenues during the development period as Barr
completes its ongoing research and other development activities necessary to
gain FDA approval for the product. Such payments could total up to $9,000 over
five quarters. For the year ended June 30, 2000, the Company recorded $4,000 as
development and other revenue related to this agreement.



     Amounts received under these agreements are not refundable to DuPont if the
research efforts are unsuccessful.


                                      F-10
<PAGE>   53
                            BARR LABORATORIES, INC.

         NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)


     Under the terms of a third agreement, Barr will become the sole distributor
in the United States and Canada of DuPont's ViaSpan(R) organ transplant
preservation agent ("ViaSpan Agreement"). During a transition period, that ended
July 31, 2000, DuPont remained the distributor of ViaSpan and will pay a fee to
Barr based on a defined formula ("Transition Revenue") related to DuPont's sales
of ViaSpan during this transition period. Such Transition Revenue is included in
development and other revenue. For the year ended June 30, 2000, the Company
recorded approximately $2,600 as development and other revenue related to the
ViaSpan Agreement. Beginning August 1, 2000, Barr assumed responsibility for
distributing the product and will record product sales and related costs,
including royalties, in its Consolidated Statements of Operations. Therefore, as
of August 1, 2000, Barr will no longer record Transition Revenue in development
and other revenue.


(3) PROCEEDS FROM SUPPLY AGREEMENTS


     In January 1997, Bayer AG and Bayer Corporation ("Bayer") and the Company
reached an agreement to settle the then pending litigation regarding Bayer's
patent protecting Ciprofloxacin hydrochloride ("Settlement Agreement"). The
Company and its partner signed a contingent, non-exclusive Supply Agreement
("Supply Agreement") which ends at patent expiry in December 2003. The amount
Barr could earn from the agreement is not determinable because it is dependent
upon Bayer's actions as well as market conditions. Bayer, at its sole option,
can either allow Barr and its partner to purchase quantities of Ciprofloxacin
for resale under market conditions or make payments to Barr as defined in the
agreement. If Bayer elects to allow Barr and its partner to purchase product for
resale, Barr's revenues and earnings will depend on numerous factors, including
the existence of competing products, market acceptance of the Barr label product
and pricing decisions. If Bayer elects not to allow Barr and its partner to
purchase product for resale, then Barr is entitled to cash payments, which could
range from $28,000 to $31,000 per year through June 30, 2003. In accordance with
the Supply Agreement, the Company recognizes income and a related receivable on
a monthly basis, as certain contingencies are met. Collection of these
receivables occurs quarterly. Further, the Supply Agreement provides that six
months prior to patent expiry, the Company and its partner can begin
distributing Ciprofloxacin.


     Also included in proceeds from supply agreements for the years ended June
30, 1999 and 1998 is $1,500 and $4,500, respectively, received under a separate
contingent supply agreement with an unrelated party relating to the
Ciprofloxacin patent challenge.

(4) AGREEMENT EXPENSES


     In connection with resolving a legal dispute between the Company and
DuPont, the Company issued two warrants granting DuPont the right to purchase
750,000 shares of Barr's common stock at $31.33 per share and 750,000 shares at
$38.00 per share, respectively. Each warrant is immediately exercisable and
expires in March 2004. Because there is no future performance related to the
warrants, no past relationship with DuPont and there was no consideration
received for the warrants, the Company recorded a one-time, non-cash charge for
the fair value of the warrants of approximately $16,400. The charge was
calculated using a Black-Scholes option pricing model with the following
assumptions at the grant date: dividend yield of 0%; expected volatility of 38%;
weighted-average risk-free interest rate of 7.1341% and expected term of 4
years.



     Agreement expenses of $18,940 ($0.33 per share after tax) consist of the
one-time non-cash charge of $16,400 associated with the issuance of the warrants
and approximately $2,500 in one-time legal charges, primarily related to a
special fee paid to the Company's outside legal counsel, associated with
finalizing the Company's definitive agreements with DuPont.


                                      F-11
<PAGE>   54
                            BARR LABORATORIES, INC.

         NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

(5) INVENTORIES

     A summary of inventories is as follows:

<TABLE>
<CAPTION>
                                                                   JUNE 30,
                                                              ------------------
                                                               2000       1999
                                                              -------    -------
<S>                                                           <C>        <C>
Raw materials and supplies..................................  $16,884    $15,790
Work-in-process.............................................    5,102      7,957
Finished goods..............................................   57,496     53,866
                                                              -------    -------
                                                              $79,482    $77,613
                                                              =======    =======
</TABLE>

     Tamoxifen Citrate, purchased as a finished product, accounted for $42,730
and $43,040 of finished goods inventory at June 30, 2000 and 1999, respectively.

(6) PROPERTY, PLANT AND EQUIPMENT

     A summary of property, plant and equipment is as follows:

<TABLE>
<CAPTION>
                                                                    JUNE 30,
                                                              --------------------
                                                                2000        1999
                                                              --------    --------
<S>                                                           <C>         <C>
Land........................................................  $  3,408    $  3,256
Buildings and improvements..................................    64,649      57,669
Machinery and equipment.....................................    72,886      69,789
Leasehold improvements......................................     1,288       1,665
Automobiles and trucks......................................        68          68
Construction in progress....................................     3,823       7,041
                                                              --------    --------
                                                               146,122     139,488
Less: Accumulated depreciation & amortization...............    50,826      45,724
                                                              --------    --------
                                                              $ 95,296    $ 93,764
                                                              ========    ========
</TABLE>

     For the years ended June 30, 2000, 1999 and 1998, $136, $205 and $2,047 of
interest was capitalized, respectively.

(7) MARKETABLE SECURITIES & OTHER ASSETS

     The Company's investments in marketable securities and certain other assets
are classified as "available for sale" and, accordingly, are recorded at current
market value with offsetting adjustments to shareholders' equity, net of income
taxes.

     Marketable securities include investments in a short duration portfolio of
corporate and government debt. The debt securities will be held for less than
one year and are therefore, recorded as a current asset in the Consolidated
Balance Sheets.

     Other assets include equity securities that represent the Company's
investments in Warner Chilcott plc. ("Warner Chilcott") and Halsey Drug Co.,
Inc. ("Halsey").

  Warner Chilcott plc.

     On August 13, 1997, Barr made a strategic investment in Warner Chilcott, a
developer, marketer, and distributor of specialty pharmaceutical products. In
connection with Warner Chilcott's Initial Public Offering ("Offering"), the
Company acquired 250,000 Ordinary Shares represented by 250,000 American
Depository

                                      F-12
<PAGE>   55
                            BARR LABORATORIES, INC.

         NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

Shares ("ADSs") at a price equal to the initial public offering price less
underwriting discounts and commissions. The initial investment totaled $4,069.
In addition, the Company was granted warrants to purchase an additional 250,000
shares in the form of ADSs. Beginning on the first anniversary of the Offering
and annually thereafter for the next three years, one-fourth of the warrants
will be exercisable by Barr. If Barr does not exercise in full the portion of
the warrant exercisable during any one year, such portion of the warrant will
terminate. The Company elected not to exercise the first portion of the warrants
because the warrants' exercise price exceeded the then market price, and as a
result, such portion of the warrants terminated. The Company exercised the
second portion on August 7, 2000.

  Halsey Drug Co., Inc.

     In April 1999, the Company sold its rights to several pharmaceutical
products to Halsey in exchange for 500,000 warrants exercisable for 500,000
shares of Halsey's common stock at $1.06 per share. The warrants expire in April
2004. In connection with this sale, the Company recorded an investment in
warrants and realized a gain of $343. The Company has valued the warrants at
their fair value using the Black-Scholes option-pricing model.

  Other Investments

     Also included in other assets is the Company's investment of $2,250 in
Gynetics, Inc., a private company that develops and markets pharmaceutical
products and medical devices to advance the healthcare of women and an
investment of $550 in another private company with whom the Company will work in
connection with another one of its proprietary products. These investments are
recorded at cost in the Consolidated Balance Sheets.

     The amortized cost and estimated market values of the securities at June
30, 2000 and 1999 are as follows:

<TABLE>
<CAPTION>
                                                           GROSS         GROSS
                                            AMORTIZED    UNREALIZED    UNREALIZED    MARKET
JUNE 30, 2000                                 COST         GAINS         LOSSES       VALUE
-------------                               ---------    ----------    ----------    -------
<S>                                         <C>          <C>           <C>           <C>
Debt securities:
  U.S. Government securities..............   $   101       $   --        $    5      $    96
Equity securities.........................     4,412        3,206            --        7,618
                                             -------       ------        ------      -------
Total securities..........................   $ 4,513       $3,206        $    5      $ 7,714
                                             =======       ======        ======      =======
</TABLE>

<TABLE>
<CAPTION>
                                                           GROSS         GROSS
                                            AMORTIZED    UNREALIZED    UNREALIZED    MARKET
JUNE 30, 1999                                 COST         GAINS         LOSSES       VALUE
-------------                               ---------    ----------    ----------    -------
<S>                                         <C>          <C>           <C>           <C>
Debt securities:
  U.S. Government securities..............   $ 5,954       $   --        $   55      $ 5,899
  Corporate bonds.........................     2,235            1             8        2,228
                                             -------       ------        ------      -------
Total debt securities.....................     8,189            1            63        8,127
Equity securities.........................     4,069           --         2,038        2,031
                                             -------       ------        ------      -------
Total securities..........................   $12,258       $    1        $2,101      $10,158
                                             =======       ======        ======      =======
</TABLE>

     Proceeds of $52,916 and $9,446, which include a loss of $122 and $6,
respectively, were received on the sales of marketable securities in the years
ended June 30, 2000 and 1999, respectively. The cost of investments sold is
determined by the specific identification method.

                                      F-13
<PAGE>   56
                            BARR LABORATORIES, INC.

         NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

(8) LONG-TERM DEBT

     A summary of long-term debt is as follows:

<TABLE>
<CAPTION>
                                                                   JUNE 30,
                                                              ------------------
                                                               2000       1999
                                                              -------    -------
<S>                                                           <C>        <C>
New Jersey Economic Development Authority Bond(a)...........  $    --    $   241
Senior unsecured notes(b)...................................   27,143     28,571
Equipment financing(c)......................................    2,865      3,361
Unsecured revolving credit facility(d)......................       --         --
                                                              -------    -------
                                                               30,008     32,173
Less: Current installments of long-term debt................    1,924      2,165
                                                              -------    -------
Total long-term debt........................................  $28,084    $30,008
                                                              =======    =======
</TABLE>

---------------
(a) The New Jersey Economic Development Authority Bond was payable to a bank.
    Such loan was secured by a first mortgage on land, building and improvements
    on the facility located at 265 Livingston Street. Interest was charged at
    75% of the bank's prime rate. The final installment of $220 was paid in
    January 2000.

(b) In November 1997, the Company refinanced $14,400 of outstanding Senior
    Secured Notes with $30,000 of Senior Unsecured Notes with an average
    interest rate of 6.88% per year. The cash payment of $16,055 included the
    outstanding principal of $14,400, a prepayment penalty of $1,087 and accrued
    interest through November 18, 1997 of $568. The prepayment penalty of $1,087
    and the related write-off of approximately $195 in previously deferred
    financing costs resulted in an extraordinary loss. This extraordinary loss
    from early extinguishment of debt, net of taxes of $492, was $790 or $0.02
    per share. The Senior Unsecured Notes of $30,000 include a $20,000, 7.01%
    Note due November 18, 2007 and $10,000, 6.61% Notes due November 18, 2004.
    Annual principal payments under the Notes total $1,429 through November
    2002, $5,429 in 2003 and 2004, and $4,000 in 2005 through 2007.

    The Senior Unsecured Notes contain certain financial covenants including
    restrictions on dividend payments not to exceed $10 million plus 75% of
    consolidated net earnings subsequent to June 30, 1997. The Company was in
    compliance with all such covenants as of June 30, 2000.

(c) In April 1996, the Company signed a Loan and Security Agreement with
    BankAmerica Leasing and Capital Group that provided the Company up to
    $18,750 in financing for equipment to be purchased through October 1997.
    Notes entered into under this agreement require no principal payment for the
    first two quarters; bear interest quarterly at a rate equal to the London
    Interbank Offer Rate (LIBOR) plus 125 basis points; and have a term of 72
    months. LIBOR was 6.769% and 5.368% at June 30, 2000 and June 30, 1999,
    respectively.

(d) The Company currently has no outstanding borrowings under its $20,000
    Unsecured Revolving Credit Facility ("Revolver") with Bank of America,
    National Association. Borrowings under this facility bear interest at either
    prime or LIBOR plus 0.75%. In addition, the Company is required to pay a
    commitment fee equal to .25% of the difference between the outstanding
    borrowings and $20,000. In December 1999, the term of the Revolver was
    extended to December 31, 2001.

                                      F-14
<PAGE>   57
                            BARR LABORATORIES, INC.

         NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

     Principal maturities of existing long-term debt for the next five years and
thereafter are as follows:

<TABLE>
<CAPTION>
                        YEAR ENDING
                          JUNE 30,
                        -----------
<S>                                                           <C>
2001........................................................  $ 1,924
2002........................................................    3,184
2003........................................................    2,042
2004........................................................    5,429
2005........................................................    5,429
Thereafter..................................................   12,000
</TABLE>

(9) RELATED-PARTY TRANSACTIONS

     The Company's related-party transactions were with affiliated companies of
Dr. Bernard C. Sherman. During the years ended June 30, 2000, 1999 and 1998, the
Company purchased $2,716, $1,134 and $1,799, respectively, of bulk
pharmaceutical material from such companies. In addition, the Company sold
certain of its pharmaceutical products and bulk pharmaceutical materials to two
other companies owned by Dr. Sherman. During fiscal 1996, the Company also
entered into a multi-year agreement with a Company owned by Dr. Sherman to share
litigation and development costs in connection with one of its patent
challenges. For the years ended June 30, 2000, 1999 and 1998, the Company
recorded $668, $1,438 and $1,170, respectively, in connection with such
agreement as a reduction to selling, general and administrative expenses and
research and development expenses.

     During the years ended June 30, 2000, 1999 and 1998, the Company's founder
and Vice Chairman, Edwin A. Cohen, earned $200, $200 and $250, respectively,
under a consulting agreement, which expires on June 30, 2002.

(10) INCOME TAXES

     A summary of the components of income tax expense is as follows:

<TABLE>
<CAPTION>
                                                             YEAR ENDED JUNE 30,
                                                        -----------------------------
                                                         2000       1999       1998
                                                        -------    -------    -------
<S>                                                     <C>        <C>        <C>
Current:
  Federal.............................................  $25,475    $25,173    $15,504
  State...............................................    4,100      3,870      1,567
                                                        -------    -------    -------
                                                         29,575     29,043     17,071
                                                        -------    -------    -------
Deferred:
  Federal.............................................   (3,577)     1,588      3,103
  State...............................................     (550)       246        482
                                                        -------    -------    -------
                                                         (4,127)     1,834      3,585
                                                        -------    -------    -------
Total.................................................  $25,448    $30,877    $20,656
                                                        =======    =======    =======
</TABLE>

                                      F-15
<PAGE>   58
                            BARR LABORATORIES, INC.

         NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

     Income tax expense for the years ended June 30, 2000, 1999 and 1998 is
included in the financial statements as follows:

<TABLE>
<CAPTION>
                                                             YEAR ENDED JUNE 30,
                                                        -----------------------------
                                                         2000       1999       1998
                                                        -------    -------    -------
<S>                                                     <C>        <C>        <C>
Continuing operations.................................  $25,448    $30,877    $21,148
Extraordinary loss on early extinguishment of debt....       --         --       (492)
                                                        -------    -------    -------
                                                        $25,448    $30,877    $20,656
                                                        =======    =======    =======
</TABLE>

     The provision for income taxes differs from amounts computed by applying
the statutory federal income tax rate to earnings before income taxes due to the
following:

<TABLE>
<CAPTION>
                                                             YEAR ENDED JUNE 30,
                                                        -----------------------------
                                                         2000       1999       1998
                                                        -------    -------    -------
<S>                                                     <C>        <C>        <C>
Federal income taxes at statutory rate................  $23,726    $28,044    $18,681
State income taxes, net of federal income tax
  effect..............................................    2,307      2,675      1,332
Other, net............................................     (585)       158        643
                                                        -------    -------    -------
                                                        $25,448    $30,877    $20,656
                                                        =======    =======    =======
</TABLE>

     The temporary differences that give rise to deferred tax assets and
liabilities as of June 30, 2000 and 1999 are as follows:

<TABLE>
<CAPTION>
                                                                2000        1999
                                                              --------    --------
<S>                                                           <C>         <C>
Deferred tax assets:
  Receivable reserves.......................................  $  2,313    $    900
  Inventory reserves........................................       620       2,290
  Inventory capitalization..................................       895         385
  Investments*..............................................        --         842
  Other operating reserves..................................     2,443       2,471
  Warrants issued...........................................     6,610          --
                                                              --------    --------
Total deferred tax assets...................................    12,881       6,888

Deferred tax liabilities:
  Plant and equipment.......................................    (6,384)     (4,173)
  Proceeds from supply agreement............................    (6,576)     (6,319)
  Other operating reserves..................................      (240)         --
  Investments*..............................................    (1,283)         --
                                                              --------    --------
Total deferred tax liabilities..............................   (14,483)    (10,492)
                                                              --------    --------
Net deferred tax liability..................................  $ (1,602)   $ (3,604)
                                                              ========    ========
</TABLE>

---------------
* Tax effects are reflected directly in equity

     As of June 30, 2000, the Company has capital loss carryforwards of $151,
expiring in 2004 and 2005.

(11) SHAREHOLDERS' EQUITY

  Employee Stock Option Plans

     The Company has two stock option plans, the 1993 Stock Incentive Plan (the
"1993 Option Plan") and the 1986 Option Plan, which were approved by the
shareholders and which authorize the granting of options

                                      F-16
<PAGE>   59
                            BARR LABORATORIES, INC.

         NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

to officers and certain key employees to purchase the Company's common stock at
a price equal to the market price on the date of grant. Effective June 30, 1996,
options are no longer granted under the 1986 Option Plan. For fiscal 2000, 1999
and 1998, there were no options that expired under this plan.

     All options granted prior to June 30, 1996, under the 1993 Option Plan and
1986 Option Plan, are exercisable between one and two years from the date of
grant and expire ten years after the date of grant except in cases of death or
termination of employment as defined in each Plan. Options issued after June 30,
1996 are exercisable between one and three years from the date of grant. To
date, no option has been granted under either the 1993 Option Plan or the 1986
Option Plan at a price below the current market price of the Company's common
stock on the date of grant.

     A summary of the activity resulting from all plans, adjusted for the June
2000 3-for-2 stock split, is as follows:

<TABLE>
<CAPTION>
                                                                           WEIGHTED-AVERAGE
                                                          NO. OF SHARES      OPTION PRICE
                                                          -------------    ----------------
<S>                                                       <C>              <C>
Outstanding at 6/30/97..................................    2,978,086           $ 8.55
  Granted...............................................      293,250            26.39
  Canceled..............................................      (58,488)           15.07
  Exercised.............................................     (701,117)            4.82
                                                            ---------
Outstanding at 6/30/98..................................    2,511,731             9.05

  Granted...............................................      417,000            22.75
  Canceled..............................................      (48,864)           21.69
  Exercised.............................................     (644,566)            4.67
                                                            ---------
Outstanding at 6/30/99..................................    2,235,301            12.59

  Granted...............................................      617,516            24.07
  Canceled..............................................       (5,947)           26.20
  Exercised.............................................     (515,575)            7.76
                                                            ---------
Outstanding at 6/30/00..................................    2,331,295           $16.67
                                                            =========

Available for grant (6,243,750 authorized)..............      658,173

Exercisable at 6/30/00..................................    1,366,460           $11.56
</TABLE>

  Non-Employee Directors' Stock Option Plan

     During fiscal year 1994, the shareholders ratified the adoption by the
Board of Directors of the 1993 Stock Option Plan for Non-Employee Directors (the
"Directors' Plan"). This formula plan, among other things, enhances the
Company's ability to attract and retain experienced directors. In December 1998,
the number of shares which each non-employee director is optioned was decreased
from 11,250 to 7,500 shares on the grant date. In October 1999, the number of
shares which each non-employee director is optioned was decreased from 7,500 to
5,000 shares on the grant date. Effective October 2000, the number of shares
which each non-employee director is optioned is 7,500 shares on the grant date.

     All options granted under the Directors' Plan have ten-year terms and are
exercisable at an option exercise price equal to the market price of the common
stock on the date of grant. Each option is exercisable on the date of the first
annual shareholders' meeting immediately following the date of grant of the
option, provided there has been no interruption of the optionee's service on the
Board before that date. The following

                                      F-17
<PAGE>   60
                            BARR LABORATORIES, INC.

         NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

is a summary of activity adjusted for the June 2000 3-for-2 stock split, for the
three fiscal years ended June 30, 2000:

<TABLE>
<CAPTION>
                                                                           WEIGHTED-AVERAGE
                                                          NO. OF SHARES      OPTION PRICE
                                                          -------------    ----------------
<S>                                                       <C>              <C>
Outstanding at 6/30/97..................................     365,250            $ 8.07
  Granted...............................................     101,250             24.00
  Canceled..............................................     (16,875)            24.00
  Exercised.............................................     (57,000)             6.60
                                                             -------
Outstanding at 6/30/98..................................     392,625             11.70

  Granted...............................................      56,250             32.42
  Exercised.............................................     (43,875)             7.88
                                                             -------
Outstanding at 6/30/99..................................     405,000             14.99

  Granted...............................................      37,500             19.96
  Exercised.............................................     (52,500)             8.30
                                                             -------
Outstanding at 6/30/00..................................     390,000            $16.37
                                                             =======

Available for grant (843,750 authorized)................     240,375

Exercisable at 6/30/00..................................     352,500            $15.99
</TABLE>

EMPLOYEE STOCK PURCHASE PLAN

     During fiscal 1994, the shareholders ratified the adoption by the Board of
Directors of the 1993 Employee Stock Purchase Plan (the "Purchase Plan") to
offer employees an inducement to acquire an ownership interest in the Company.
The Purchase Plan permits eligible employees to purchase, through regular
payroll deductions, an aggregate of 675,000 shares of common stock at
approximately 85% of the fair market value of such shares. Under the Plan,
purchases were 60,874, 59,965 and 64,771 shares for the years ended June 30,
2000, 1999 and 1998, respectively.

  Accounting for Stock-Based Compensation Plans

     The Company applies APB No. 25 and related Interpretations in accounting
for its stock-based compensation plans. Accordingly, no compensation cost has
been recognized for its stock option plans and its stock purchase plan. Had
compensation cost for the Company's stock-based compensation plans been
determined based on the fair value at the grant dates for awards under those
plans consistent with the method of SFAS No. 123, the Company's net earnings and
earnings per share would have been reduced to the pro forma amounts indicated
below:

<TABLE>
<CAPTION>
                                                         2000       1999       1998
                                                        -------    -------    -------
<S>                                                     <C>        <C>        <C>
Net earnings
  As reported.........................................  $42,342    $49,250    $32,720
  Pro forma...........................................  $39,398    $46,940    $30,752
Net earnings per share
  As reported.........................................  $  1.23    $  1.45    $  1.00
  Pro forma...........................................  $  1.15    $  1.39    $  0.94
Net earnings per share -- assuming dilution
  As reported.........................................  $  1.19    $  1.39    $  0.94
  Pro forma...........................................  $  1.10    $  1.33    $  0.89
</TABLE>

                                      F-18
<PAGE>   61
                            BARR LABORATORIES, INC.

         NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

     The fair value of each option grant was estimated on the date of grant
using the Black-Scholes option-pricing model with the following assumptions for
2000, 1999 and 1998, respectively: dividend yield of 0%; expected volatility of
50.6%, 48.9% and 42.1%; weighted-average risk-free interest rates of 5.8%, 4.7%
and 5.9%; and expected option life of 3 years for the 1993 Option Plan and 4
years for the Directors' Plan.

     The following table summarizes information about stock options outstanding
at June 30, 2000:

<TABLE>
<CAPTION>
                               OPTIONS OUTSTANDING                     OPTIONS EXERCISABLE
                 -----------------------------------------------   ----------------------------
                                   WEIGHTED
   RANGE OF        NUMBER          AVERAGE           WEIGHTED        NUMBER         WEIGHTED
   EXERCISE      OUTSTANDING      REMAINING          AVERAGE       EXERCISABLE      AVERAGE
    PRICES       AT 6/30/00    CONTRACTUAL LIFE   EXERCISE PRICE   AT 6/30/00    EXERCISE PRICE
--------------   -----------   ----------------   --------------   -----------   --------------
<S>              <C>           <C>                <C>              <C>           <C>
$ 3.03 -  7.58      925,184          4.43             $ 6.44          925,184        $ 6.44
 11.50 - 14.74      373,285          6.27              12.51          373,285         12.51
 19.60 - 24.89    1,118,218          8.72              23.44          203,325         23.21
 26.02 - 32.41      304,608          7.43              27.57          217,166         28.00
                  ---------                                         ---------
                  2,721,295                                         1,718,960
                  =========                                         =========
</TABLE>

(12) SAVINGS AND RETIREMENT PLAN

     The Company has a savings and retirement plan (the "401(k) Plan") which is
intended to qualify under Section 401(k) of the Internal Revenue Code. Employees
are eligible to participate in the 401(k) Plan in the first month following the
month of hire. Participating employees may contribute up to a maximum of 12% of
their earnings before or after taxes. The Company is required, pursuant to the
terms of its union contract, to contribute to each union employee's account an
amount equal to the 2% minimum contribution made by such employee. The Company
may, at its discretion, contribute a percentage of the amount contributed by an
employee to the 401(k) Plan up to a maximum of 10% of such employee's
compensation. Participants are always fully vested with respect to their own
contributions and any profits arising therefrom. Participants become fully
vested in the Company's contributions and related earnings after five full years
of employment.

     The Company's contributions to the 401(k) Plan were $2,608, $2,292 and
$2,194 for the years ended June 30, 2000, 1999 and 1998, respectively.

     In Fiscal 2000, the Board of Directors approved a non-qualified plan
("Excess Plan") that enables certain executives to defer up to 10% of their
compensation in excess of the qualified plan. The Company may, at its
discretion, contribute a percentage of the amount contributed by the individuals
covered under this Excess Plan to a maximum of 10% of such individual's
compensation. In fiscal 2000, the Company chose to make contributions at the 10%
rate to this plan. As of June 30, 2000, the Company had recorded an asset and
liability for the Excess Plan of $422.

(13) OTHER INCOME (EXPENSE)

     A summary of other income (expense) is as follows:

<TABLE>
<CAPTION>
                                                               YEAR ENDED JUNE 30,
                                                              ---------------------
                                                              2000     1999    1998
                                                              -----    ----    ----
<S>                                                           <C>      <C>     <C>
Net gain (loss) on sale of assets...........................  $ 470    $(11)   $(63)
Net (loss) gain on sale of securities.......................   (141)    (11)      2
Other.......................................................     18      58      44
                                                              -----    ----    ----
Other income (expense)......................................  $ 347    $ 36    $(17)
                                                              =====    ====    ====
</TABLE>

                                      F-19
<PAGE>   62
                            BARR LABORATORIES, INC.

         NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

(14) COMMITMENTS AND CONTINGENCIES

     The Company is party to various operating leases which relate to the rental
of office facilities and equipment. The Company believes it will be able to
extend such leases, if necessary. Rent expense charged to operations was $1,069,
$1,099 and $1,493 in fiscal 2000, 1999 and 1998, respectively. Future minimum
rental payments, exclusive of taxes, insurance and other costs under
noncancellable long-term operating lease commitments, are as follows:

<TABLE>
<CAPTION>
                                                              MINIMUM
                        YEAR ENDING                            RENTAL
                          JUNE 30,                            PAYMENTS
                        -----------                           --------
<S>                                                           <C>
  2001......................................................    $614
  2002......................................................     185
  2003......................................................     159
  2004......................................................     148
  2005......................................................     110
</TABLE>

  Product Liability

     The Company maintains product liability insurance coverage in the amount of
$20,000. No significant product liability suit has ever been filed against the
Company. However, if one were filed and such a case were successful against the
Company, it could have a material adverse effect upon the business and financial
condition of the Company to the extent such judgment was not covered by
insurance or exceeded the policy limits.

CLASS ACTION LAWSUITS

     On July 14, 2000, Louisiana Wholesale Drug Co. filed a class action
complaint in the United States District Court for the Southern District of New
York against Bayer Corporation, the Rugby Group and the Company. The complaint
alleges that the Company and the Rugby Group agreed with Bayer Corporation not
to compete with a generic version of Ciprofloxacin pursuant to an
anti-competitive agreement between the defendants. The plaintiff purports to
bring claims on behalf of all direct purchasers of Cipro from 1997 to present.
On August 1, 2000, Maria Locurto filed a similar class action complaint in the
United States District Court for the Eastern Division of New York. On August 4,
2000, Ann Stuart, et al filed a class action complaint in the Superior Court of
New Jersey, Law Division, Camden County. This complaint alleges violations of
New Jersey statutes relating to the Cipro agreement.

     The Company believes that its agreement with Bayer Corporation is a valid
settlement to a patent suit and cannot form the basis of an antitrust claim.
Although it is not possible to forecast the outcome of these matters, the
Company intends to vigorously defend itself. It is anticipated that these
matters may take several years to be resolved but an adverse judgment could have
a material adverse impact on the Company's financial statements.

INVAMED, INC./APOTHECON, INC. LAWSUIT

     In February 1998 and May 1999, Invamed, Inc., which has since been acquired
by Geneva Pharmaceuticals, Inc., a division of Novartis AG ("Invamed"), and
Apothecon, Inc., a division of Bristol-Meyers Squibb, Inc. ("Apothecon"),
respectively, named the Company and several others as defendants in lawsuits
filed in the United States District Court for the Southern District of New York,
charging that the Company unlawfully blocked access to the raw material source
for Warfarin Sodium. The Company believes that these suits are without merit and
intends to defend its position vigorously. These actions are currently in the
discovery stage. It is anticipated that this matter may take several years to be

                                      F-20
<PAGE>   63
                            BARR LABORATORIES, INC.

         NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

resolved but an adverse judgment could have a material adverse impact on the
Company's consolidated financial statements.

ADMINISTRATIVE MATTERS

     Federal antitrust authorities have undertaken a review of certain trade
practices within the pharmaceutical industry, specifically patent challenge
settlements, unfair trade practices by brand drug companies and exclusive supply
arrangements. The Company has voluntarily discussed with the Federal Trade
Commission ("FTC") its arrangements with the supplier of the raw material for
its Warfarin Sodium. The Company has voluntarily responded to requests from the
Department of Justice by providing documents relating to the settlement of its
Tamoxifen patent challenge. On June 30, 1999, the Company received a subpoena
and civil investigative demand from the FTC relating to its March 1997 patent
litigation settlement regarding Ciprofloxacin hydrochloride. The Company
believes that it has complied with all applicable laws and regulations governing
trade and competition in the marketplace in connection with its arrangements
with its raw material suppliers and its two patent challenge settlements.

  Other Litigation

     As of June 2000, the Company was involved with other lawsuits incidental to
its business, including patent infringement actions. Management of the Company,
based on the advice of legal counsel, believes that the ultimate disposition of
such other lawsuits will not have any significant adverse effect on the
Company's consolidated financial statements.

(15) FOURTH QUARTER CHARGE FOR FISCAL 1998

     During the quarter ended June 1998, the Company recorded a $1.2 million
restructuring charge which is included in selling, general and administrative
expenses in the Consolidated Statements of Operations. Approximately half of
this charge related to the write-off of equipment and leasehold improvements in
connection with the closing of a leased New Jersey packaging facility, for which
the operations have been relocated to other company facilities. The remainder
related to severance related expenses for certain operations employees,
primarily those affiliated with the closed facility. As of June 30, 1999, the
1998 fourth quarter restructuring plan was completed and all payments were made.

                                      F-21
<PAGE>   64
                            BARR LABORATORIES, INC.

         NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

(16) QUARTERLY DATA (UNAUDITED)

     A summary of the quarterly results of operations is as follows:

<TABLE>
<CAPTION>
                                                             THREE MONTH PERIOD ENDED
                                                   --------------------------------------------
                                                   SEPT. 30    DEC. 31     MAR. 31     JUNE 30
                                                   --------    --------    --------    --------
<S>                                                <C>         <C>         <C>         <C>
FISCAL YEAR 2000:
Total revenues...................................  $98,853     $120,820    $135,760    $126,845
Cost of sales....................................   61,973       81,326      92,889      79,464
Net earnings.....................................   11,493       12,394       2,667      15,788
EARNINGS PER COMMON SHARE -- ASSUMING DILUTION
Net earnings(1)(3)...............................  $  0.32     $   0.35    $   0.07    $   0.44
                                                   =======     ========    ========    ========
PRICE RANGE OF COMMON STOCK(2)
High.............................................  $ 26.75     $  23.50    $  33.92    $  45.88
Low..............................................    18.88        19.00       20.00       25.38

FISCAL YEAR 1999:
Total revenues...................................  $97,149     $109,220    $122,572    $115,092
Cost of sales....................................   63,908       73,920      87,968      75,597
Net earnings.....................................   11,204       12,281      12,662      13,103
EARNINGS PER COMMON SHARE -- ASSUMING DILUTION
Net earnings(1)..................................  $  0.32     $   0.35    $   0.36    $   0.37
                                                   =======     ========    ========    ========
PRICE RANGE OF COMMON STOCK(2)
High.............................................  $ 26.50     $  33.17    $  32.37    $  27.00
Low..............................................    16.46        16.59       18.92       19.00
</TABLE>

---------------
(1) The sum of the individual quarters may not equal the full year amounts due
    to the effects of the market prices in the application of the treasury stock
    method. During its two most recent fiscal years, the Company paid no cash
    dividend.

(2) The Company's common stock is listed and traded on the New York Stock
    Exchange (BRL). At June 30, 2000, there were approximately 669 shareholders
    of record of common stock. The Company believes that a significant number of
    beneficial owners hold their shares in street names.


(3) The quarter ended March 31, 2000 includes a non-recurring charge of $18,940
    for agreement expenses ($11,800 after tax or $0.33 per share) (See Note 2 to
    the Consolidated Financial Statements).


                                      F-22
<PAGE>   65

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

                                3,500,000 SHARES

                                  [BARR LOGO]

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

                                   PROSPECTUS
                                           , 2000
                         ------------------------------

                         BANC OF AMERICA SECURITIES LLC

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
<PAGE>   66

                                    PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 14.  OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.

     The expenses in connection with the issuance and distribution of the
securities being registered, other than underwriting discounts and commissions,
are estimated to be:

<TABLE>
<CAPTION>

<S>                                                             <C>
SEC Registration Fee........................................    $ 79,461.23
NASD Filing Fee.............................................      30,500.00
Stock Exchange Listing Fee..................................       1,750.00
Printing and Engraving Costs................................      75,000.00
Transfer Agent and Registrar Fees...........................       5,000.00
Accounting Fees.............................................     100,000.00
Legal Fees and Expenses.....................................     200,000.00
Blue Sky Fees and Expenses..................................       5,000.00
Miscellaneous...............................................       3,288.77
                                                                -----------
          Total.............................................    $500,000.00
                                                                ===========
</TABLE>

     All expenses will be borne by us and the selling shareholder on a pro rata
basis determined by the number of shares sold by each, except that the selling
shareholder will pay all legal fees and expenses incurred by it.

ITEM 15.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.

     Sections 721 through 726 of the New York Business Corporation Law contain
detailed provision for indemnification of directors and officers of New York
corporations against judgments, penalties, fines, Settlements and reasonable
expenses in connection with litigation. Such statutory provisions are not
Exclusive of any rights to indemnification granted under our Certificate of
Incorporation, as amended (the "Certificate"), our By-laws, as amended (the
"By-laws"), indemnification agreements or otherwise.

     Article Eighth of the Certificate and Article X of the By-laws permit, but
do not require, us to indemnify our directors and officers to the fullest extent
permitted by law.

     We have purchased insurance which insures (subject to certain terms and
conditions, exclusions and deductibles) us against certain costs which we might
be required to pay by way of indemnification to our directors or officers under
the Certificate or By-laws, indemnification agreements or otherwise and protects
individual directors and officers from certain losses for which they might not
be indemnified by us. In addition, we have purchased insurance which provides
liability coverage (subject to certain terms and conditions, exclusions and
deductibles) for amounts which we, or the fiduciaries under our employee benefit
plans, which may include our directors, officers and employees, might be
required to pay as a result of a breach of fiduciary duty.

     Pursuant to the Underwriting Agreement relating to the offering, the
underwriters have agreed to indemnify our directors, officers and controlling
persons, in their capacity as such, against some liabilities, including some
liabilities under the Securities Act, arising out of information furnished to us
by the underwriters for use in the prospectus.

                                      II-1
<PAGE>   67

ITEM 16.  EXHIBITS.

<TABLE>
<CAPTION>
EXHIBIT
NUMBER                      DESCRIPTION OF EXHIBIT
-------                     ----------------------
<S>      <C>
 1.1 *   Form of Underwriting Agreement
 5.1 *   Opinion of Winston & Strawn
23.1 *   Consent of Winston & Strawn (See Exhibit 5.1)
23.2     Consent of Deloitte & Touche LLP
24.1 *   Powers of Attorney (Included on the signature page of this
         Registration Statement)
</TABLE>

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

* Previously filed.

ITEM 17.  UNDERTAKINGS.

     The Company hereby undertakes that, for purposes of determining any
liability under the Securities Act of 1933, (1) each filing of the Company's
annual report pursuant to Section 13(a) or Section 15(d) of the Securities
Exchange Act of 1934 (and, where applicable, each filing of an employee benefit
plan's annual report pursuant to Section 15(d) of the Securities Exchange Act of
1934) that is incorporated by reference in this registration statement shall be
deemed to be a new registration statement, relating to the securities offered
therein, and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof, (2) the information omitted from the
form of prospectus filed as part of this registration statement in reliance upon
Rule 430A and contained in a form of prospectus filed by the registrant pursuant
to Rule 424(b)(1) or (4) or 497(h) under the Securities Act shall be deemed to
be part of this registration statement as of the time it was declared effective,
and (3) each post-effective amendment that contains a form of prospectus shall
be deemed to be a new registration statement relating to the securities offered
therein, and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof.

     Insofar as indemnification for liabilities arising under the Securities Act
of 1933 may be permitted to directors, officers and controlling persons of the
Company pursuant to the provisions described under Item 15 above or otherwise,
the Company has been advised that in the opinion of the Securities and Exchange
Commission such indemnification is against public policy as expressed in the Act
and is, therefore, Unenforceable. In the event that a claim for indemnification
against such liabilities (other than the payment by the Company of expenses
incurred or paid by a director, officer or controlling person of the Company in
the successful defense of any action, suit or proceeding) is asserted against
the Company by such director, officer or controlling person in connection with
the securities being registered, the Company will, unless in the opinion of its
counsel the matter has been settled by controlling precedent, submit to a court
of appropriate jurisdiction the question whether such indemnification by it is
against public policy as expressed in the Act and will be governed by the final
adjudication of such issue.

                                      II-2
<PAGE>   68

                                   SIGNATURES


     Pursuant to the requirements of the Securities Act of 1933, the registrant
certifies that it has reasonable grounds to believe that it meets all of the
requirements for filing on Form S-3 and has duly caused this Amendment to
Registration Statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of Pomona, State of New York on this 11th day of
December, 2000.


                                          BARR LABORATORIES, INC.

                                          By /s/      WILLIAM T. MCKEE
                                            ------------------------------------
                                                      William T. McKee
                                                Senior Vice President, Chief
                                              Financial Officer and Treasurer

     Pursuant to the requirements of the Securities Act of 1933, this Amendment
to Registration Statement has been signed below by the following persons in the
capacities and on the date indicated.


<TABLE>
<CAPTION>
                     SIGNATURE                                   TITLE                      DATE
                     ---------                                   -----                      ----
<C>                                                  <S>                              <C>
                         *                           Chairman of the Board            December 11, 2000
---------------------------------------------------    (Principal Executive
                  Bruce L. Downey                      Officer)

               /s/ WILLIAM T. MCKEE                  Senior Vice President, Chief     December 11, 2000
---------------------------------------------------    Financial Officer and
                 William T. McKee                      Treasurer (Principal
                                                       Financial Officer and
                                                       Principal Accounting
                                                       Officer)

                         *                           Vice Chairman of the Board       December 11, 2000
---------------------------------------------------
                  Edwin A. Cohen

                         *                           Director                         December 11, 2000
---------------------------------------------------
                  Paul M. Bisaro

                         *                           Director                         December 11, 2000
---------------------------------------------------
                 Robert J. Bolger

                         *                           Director                         December 11, 2000
---------------------------------------------------
                Michael F. Florence

                         *                           Director                         December 11, 2000
---------------------------------------------------
                   Jacob M. Kay

                         *                           Director                         December 11, 2000
---------------------------------------------------
                Bernard C. Sherman

                         *                           Director                         December 11, 2000
---------------------------------------------------
                 George P. Stephan

             *By /s/ WILLIAM T. MCKEE                                                 December 11, 2000
  ----------------------------------------------
        William T. McKee, Attorney-in-Fact
</TABLE>


                                      II-3


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