Document:

<PAGE>   1
                                                                     Exhibit 4.1

                     PARENT STOCKHOLDER VOTING AGREEMENT

      This PARENT STOCKHOLDER VOTING AGREEMENT (the "AGREEMENT"), dated as of
this 29th day of June, 2001, is entered into by and among DURAMED
PHARMACEUTICALS, INC., a Delaware corporation (the "COMPANY"), and SHERMAN
DELAWARE, INC., a Delaware corporation, a shareholder of BARR LABORATORIES,
INC., a New York corporation ("STOCKHOLDER" and "PARENT" respectively).

                             W I T N E S S E T H:

      WHEREAS, Parent, Beta Merger Sub I, Inc., a Delaware corporation ("MERGER
SUB"), and the Company have entered into an Agreement and Plan of Merger of even
date herewith (as the same may be amended from time to time, the "MERGER
AGREEMENT"), pursuant to which the parties thereto have agreed, upon the terms
and subject to the conditions set forth therein, to merge the Merger Sub with
and into the Company (the "MERGER");

      WHEREAS, as of the date hereof, the Stockholder is the record or
Beneficial Owner (as defined below) of the number of shares (the "SHARES") of
common stock, par value $0.01 per share, of Parent (the "PARENT COMMON Stock"),
set forth next to the Stockholder's name on Part A of Schedule I hereto; and

      WHEREAS, as a condition to its willingness to enter into the Merger
Agreement, the Company has required that the Stockholder agree, and the
Stockholder is willing to agree, to the matters set forth herein.

      NOW, THEREFORE, in consideration of the foregoing and the agreements set
forth below, the parties hereto agree as follows:

      1.    Definitions.  Capitalized terms not expressly defined in this
Agreement shall have the meanings ascribed to them in the Merger Agreement.
For purposes of this Agreement:

            (a) "BENEFICIALLY OWN" or "BENEFICIAL OWNERSHIP" with respect to any
      securities shall mean having voting power with respect to such securities
      (as determined pursuant to Rule 13d-3(a)(1) under the Exchange Act),
      including pursuant to any agreement, arrangement or understanding, whether
      or not in writing.

            (b) "TERMINATION DATE" shall mean the date of the termination of the
      Merger Agreement pursuant to the terms thereof.

            2. Voting Agreement. From the date of this Agreement and ending on
      the first to occur of the Effective Time or the Termination Date, the
      Stockholder hereby agrees to vote (or cause to be voted) all of the
      Stockholder's Shares (and any and all securities issued or issuable in
      respect thereof) which the Stockholder is entitled to vote (or to provide
      its written consent thereto), at any annual, special or other meeting of
      the
<PAGE>   2
      stockholders of Parent, and at any adjournment or adjournments thereof, or
      pursuant to any consent in lieu of a meeting or otherwise in favor of the
      issuance of the additional shares of Parent Common Stock as contemplated
      by the Merger Agreement and any actions required in furtherance thereof.

      3.    Covenants, Representations and Warranties of the Stockholder and
The Company.

            (a)   The Stockholder hereby represents, warrants and covenants
      to the Company as follows:

                  (i) Ownership. As of the date of this Agreement, the
            Stockholder is the record and Beneficial Owner of, or (B) the
            Beneficial Owner but not the record holder of, the number of issued
            and outstanding Shares set forth next to the Stockholder's name on
            Part A of Schedule I hereto. As of the date of this Agreement, the
            Shares set forth next to the Stockholder's name on Part A of
            Schedule I hereto constitute all of the issued and outstanding
            Shares owned of record or Beneficially Owned by the Stockholder.
            Except as otherwise set forth in Part A to Schedule I hereto, the
            Stockholder has the sole power to agree to all of the matters set
            forth in this Agreement, in each case with respect to all of the
            Shares set forth next to the Stockholder's name on Part A of
            Schedule I hereto, with no material limitations, qualifications or
            restrictions on such rights, subject to applicable securities Laws
            and the terms of this Agreement.

                  (ii) Organization; Standing and Corporate Power; Binding
            Agreement. The Stockholder is a corporation duly organized, validly
            existing and in good standing under the Laws of its jurisdiction of
            organization, with full corporate power and authority to own its
            properties and carry on its business as presently conducted. The
            Stockholder has the power and authority to enter into and perform
            all of the Stockholder's obligations under this Agreement. This
            Agreement has been duly and validly executed and delivered by the
            Stockholder and constitutes a valid and binding agreement of the
            Stockholder, enforceable against the Stockholder in accordance with
            its terms (except as such enforceability may be limited by
            applicable bankruptcy, insolvency, reorganization or similar laws
            affecting creditors' rights generally and by general equitable
            principles (regardless of whether enforceability is considered in a
            proceeding in equity or at law)).

                  (iii) No Encumbrances. Except as required by Section 2 hereof
            or as provided for in that certain Pledge Agreement dated April 30,
            1996 by and between the Stockholder and Bank of Montreal, as Agent,
            at all times during the term hereof, all of the Shares will be held
            by the Stockholder, or by a nominee or custodian for the benefit of
            the Stockholder, or by a family member or Affiliate of the
            Stockholder (subject to the conditions set forth in clause (v)
            below) free and clear of all Liens.

                                       2
<PAGE>   3
                  (iv) Restriction on Transfer, Proxies and Non-Interference.
            Except as otherwise contemplated by the Merger Agreement or this
            Agreement, from and after the date of this Agreement and ending on
            the first to occur of the Effective Time or the Termination Date,
            the Stockholder shall: (A) offer for sale, sell, transfer, tender,
            pledge, encumber, assign or otherwise dispose of, or enter into any
            contract, option or other arrangement or understanding with respect
            to or consent to the offer for sale, sale, transfer, tender, pledge,
            encumbrance, assignment or other disposition of (each, a "TRANSFER")
            any or all of the Shares, or any interest therein, (B) grant any
            proxies or powers of attorney, deposit any Shares into a voting
            trust or enter into a voting agreement with respect to any Shares,
            (C) enter into any agreement or arrangement providing for any of the
            actions described in clause (A) or (B) above, or (D) take any action
            that would reasonably be expected to have the effect of preventing
            or disabling the Stockholder from performing the Stockholder's
            obligations under this Agreement, only if transferees agree to be
            bound by the terms of this Agreement.

                  (v) Litigation. There is no action pending, or to the
            Knowledge of the Stockholder, threatened against or affecting the
            Stockholder, nor is there any judgment, decree, injunction or order
            of any applicable Governmental Entity or arbitrator outstanding
            against the Stockholder which would prevent the carrying out of this
            Agreement or the Merger Agreement or any of the transactions
            contemplated hereby or thereby, declare unlawful the transactions
            contemplated hereby or thereby or cause such transactions to be
            rescinded.

                  (vi)  Documents Received.  The Stockholder acknowledges
            receipt of a copy of the Merger Agreement, including all
            schedules and exhibits thereto.

                  (vii) Further Assurances. From time to time, at the Company's
            request and without further consideration, the Stockholder shall
            execute and deliver such additional documents as may be necessary or
            desirable to consummate and make effective, in the most expeditious
            manner practicable, the transactions contemplated by this Agreement
            or the Merger Agreement.

                  (viii) Filings. As of the date of this Agreement, except as
            may be required by the Exchange Act, no filing with, and no permit,
            authorization, consent or approval of, any Governmental Authority is
            necessary for the execution of this Agreement by the Stockholder and
            the consummation by the Stockholder of the transactions contemplated
            hereby, except where the failure to obtain such consent, permit,
            authorization, approval or filing would not materially interfere
            with the Stockholder's ability to perform the Stockholder's
            obligations hereunder, and none of the execution and delivery of
            this Agreement by the Stockholder, the consummation by the
            Stockholder of the transactions contemplated hereby or compliance by
            the Stockholder with any of the provisions hereof shall (A) result
            in a violation or breach of, or constitute (with or without notice
            or lapse of time or both) a default (or give rise to any third party
            right of termination, cancellation, material modification or
            acceleration) under any of the

                                       3
<PAGE>   4
            terms, conditions or provisions of any material note, bond,
            mortgage, indenture, license, contract, commitment, arrangement,
            understanding, agreement or other instrument or obligation of any
            kind to which the Stockholder is a party or by which the Stockholder
            or any of his properties or assets may be bound, or (B) violate any
            Legal Provision applicable to the Stockholder or any of the Shares,
            in each such case except to the extent that any conflict, breach,
            default or violation would not interfere with the ability of the
            Stockholder to perform his obligations hereunder.

            (b)   The Company hereby represents, warrants and covenants to
      the Stockholder as follows:

                  (i) Organization, Standing and Corporate Power. The Company is
            a corporation duly organized, validly existing and in good standing
            under the Laws of its jurisdiction of organization, with full
            corporate power and authority to own its properties and carry on its
            business as presently conducted. The Company has the corporate power
            and authority to enter into and perform all of its obligations under
            this Agreement and to consummate the transactions contemplated
            hereby.

                  (ii) No Conflicts. No filing with, and no permit,
            authorization, consent or approval of, any Governmental Entity is
            necessary for the execution of this Agreement by either the Company
            and the consummation by the Company of the transactions contemplated
            hereby, except where the failure to obtain such consent, permit,
            authorization, approval or filing would not interfere with its
            ability to perform its obligations hereunder, and none of the
            execution and delivery of this Agreement by the Company, the
            consummation by the Company of the transactions contemplated hereby
            or compliance by the Company with any of the provisions hereof shall
            (A) conflict with or result in any breach of any applicable
            organizational documents applicable to the Company, (B) result in a
            violation or breach of, or constitute (with or without notice or
            lapse of time or both) a default (or give rise to any third party
            right of termination, cancellation, material modification or
            acceleration) under any of the terms, conditions or provisions of
            any note, bond, mortgage, indenture, license, contract, commitment,
            arrangement, understanding, agreement or other instrument or
            obligation of any kind to which the Company is a party or by which
            the Company or any of the Company's properties or assets may be
            bound, (C) require any consent, approval, authorization or permit
            of, registration, declaration or filing with, or notification to,
            any Governmental Entity, (D) require any material consent,
            authorization or approval of any Person, or (E) violate any Legal
            Provision applicable to the Company or any of the Company's
            properties or assets, in each such case except to the extent that
            any conflict, breach, default or violation would not interfere with
            the ability of the Company to perform its obligations hereunder.

                  (iii) Execution, Delivery and Performance by the Company. The
            execution, delivery and performance of this Agreement and the
            consummation of the transactions contemplated hereby have been duly
            and validly authorized by

                                       4
<PAGE>   5
            the Board of Directors of the Company, and the Company has taken all
            other actions required by Law and its organizational documents to
            consummate the transactions contemplated by this Agreement. This
            Agreement constitutes the valid and binding obligations of the
            Company and is enforceable in accordance with its terms, except as
            enforceability may be subject to bankruptcy, insolvency,
            reorganization, moratorium or other similar Laws relating to or
            affecting creditors' rights generally (regardless of whether
            enforceability is considered in a proceeding in equity or at Law).

      4. Recapitalization. In the event of a stock dividend or distribution, or
any change in the Shares (or any class thereof) by reason of any split-up,
recapitalization, combination, exchange of shares or the like, the term "Shares"
shall include, without limitation, all such stock dividends and distributions
and any shares into which or for which any or all of the Shares (or any class
thereof) may be changed or exchanged as may be appropriate to reflect such
event. The term "Shares" shall also include any shares of Parent Common Stock
acquired by any Stockholder after the date of this Agreement and before the
first to occur of the Effective Time or the Termination Date.

      5. Stockholder Capacity. The Stockholder makes no agreement or
understanding herein in the capacity of a director or officer of Parent. The
Stockholder executes this Agreement solely in the Stockholder's capacity as a
record owner and/or Beneficial Owner of the Shares and nothing herein shall
limit or affect any actions taken by the Stockholder or any designee of the
Stockholder in the Stockholder's capacity, if any, as a director or officer of
Parent or any of its Subsidiaries; provided, however, that no such duty as a
director or officer of Parent shall excuse the Stockholder from his obligations
as the Stockholder to vote the Shares, to the extent that they may be so voted,
or otherwise perform any obligation as herein provided and to otherwise comply
with the terms and conditions of this Agreement.

      6. Indemnification. The Company shall, to the fullest extent permitted
under applicable Law, indemnify and hold harmless the Stockholder against any
costs or expenses (including attorneys' fees as provided below), judgments,
fines, losses, claims, damages, liabilities and amounts paid in settlement in
connection with any claim, action, suit, proceeding or investigation by or on
behalf of Parent, the Surviving Corporation or any stockholder of Parent
asserting any breach by the Stockholder of any fiduciary duty on the
Stockholder's part to Parent, the Surviving Corporation or the other
stockholders of Parent by reason of the Stockholder entering into this
Agreement, for a period of two years after the date hereof. If the Stockholder
seeks indemnification from the Company for any such claim, action, suit,
proceeding or investigation (whether arising before or after the termination of
this Agreement), (a) the Company shall pay the fees and expenses of one counsel
selected by the Stockholder and reasonably acceptable to the Company to
represent the Stockholder in connection therewith promptly after statements
therefor are received, and (b) the Company will cooperate in the defense of any
such matter; provided, however, that the Company shall not be liable for any
settlement effected without its written consent (which consent shall not be
unreasonably withheld); provided, further, that in the event that any claim or
claims for indemnification under this Section 6 are asserted or made within such
two-year period, all rights to indemnification in respect of any such claim or
claims shall continue until the final disposition of any and all such

                                       5
<PAGE>   6
claims. This Section 6 shall survive until the latest of the following: (i) two
years from the date hereof, (ii) the termination of this Agreement, and (iii)
the final disposition of all claims for indemnification asserted or made within
the two-year period following the date hereof.

      7.    Miscellaneous.

            (a) Entire Agreement. This Agreement constitutes the entire
      agreement between the parties with respect to the subject matter hereof
      and supersedes all other prior agreements and understandings, both written
      and oral, between the parties with respect to the subject matter hereof.

            (b)   Amendments, Waivers, Etc.  This Agreement may not be
      amended, changed, supplemented, waived or otherwise modified or
      terminated, except upon the execution and delivery of a written
      agreement executed by the parties hereto.

            (c) Notices. All notices, requests, claims, demands and other
      communications hereunder shall be in writing and shall be given (and shall
      be deemed to have been duly received if so given) by hand delivery,
      telegram, telex or telecopy, or by mail (registered or certified mail,
      postage prepaid, return receipt requested) or by any courier service, such
      as Federal Express, providing proof of delivery. Except for the Company
      whose address is set forth below, all communications hereunder shall be
      delivered to the respective parties at the addresses set forth on Part A
      of Schedule I hereof.

            If to the Company:      Duramed Pharmaceuticals, Inc.
                                    7155 East Kemper Road
                                    Cincinnati, Ohio 45249
                                    Attention:  General Counsel
                                    Facsimile No.:  (513) 458-6014

            with a copy to:         Taft, Stettinius & Hollister LLP
                                    425 Walnut Street
                                    Cincinnati, Ohio  45202
                                    Attention: Timothy E. Hoberg, Esq.
                                    Facsimile No.: (513) 381-0205

      or to such other address as the Person to whom notice is given may have
      previously furnished to the others in writing in the manner set forth
      above.

            (d) Severability. Whenever possible, each provision or portion of
      any provision of this Agreement will be interpreted in such manner as to
      be effective and valid under applicable law but if any provision or
      portion of any provision of this Agreement is held to be invalid, illegal
      or unenforceable in any respect under any applicable law or rule in any
      jurisdiction, such invalidity, illegality or unenforceability will not
      affect any other provision or portion of any provision in such
      jurisdiction, and

                                       6
<PAGE>   7
      this Agreement will be reformed, construed and enforced in such
      jurisdiction as if such invalid, illegal or unenforceable provision or
      portion of any provision had never been contained herein.

            (e) Specific Performance. Each of the parties hereto recognizes and
      acknowledges that a breach by any Stockholder of any covenants or
      agreements contained in this Agreement will cause the Company to sustain
      damages for which they would not have an adequate remedy at law for money
      damages, and therefore each of the parties hereto agrees that in the event
      of any such breach the Company shall be entitled to the remedy of specific
      performance of such covenants and agreements and injunctive and other
      equitable relief in addition to any other remedy to which they may be
      entitled, at law or in equity.

            (f) Remedies Cumulative. All rights, powers and remedies provided
      under this Agreement or otherwise available in respect hereof at law or in
      equity shall be cumulative and not alternative, and the exercise of any
      thereof by any party shall not preclude the simultaneous or later exercise
      of any other such right, power or remedy by such party.

            (g) No Waiver. The failure of any party hereto to exercise any
      right, power or remedy provided under this Agreement or otherwise
      available in respect hereof at Law or in equity, or to insist upon
      compliance by any other party hereto with his or its obligations
      hereunder, and any custom or practice of the parties at variance with the
      terms hereof, shall not constitute a waiver by such party of his or its
      right to exercise any such or other right, power or remedy or to demand
      such compliance.

            (h) No Third Party Beneficiaries. This Agreement is not intended to
      be for the benefit of, and shall not be enforceable by, any person or
      entity who or which is not a party hereto; provided that, in the event of
      the Stockholder's death, the benefits and obligations of the Stockholder
      hereunder shall inure to his successors and heirs.

            (i)   Governing Law.  This Agreement shall be governed by, and
      construed in accordance with, the Laws of the State of Delaware,
      without regard to any applicable conflicts of law.

            (j) Jurisdiction. The parties agree that irreparable damage would
      occur in the event that any of the provisions of this Agreement were not
      performed in accordance with their specific terms or were otherwise
      breached. It is accordingly agreed that the parties shall be entitled to
      an injunction or injunctions to prevent breaches of this Agreement and to
      enforce specifically the terms and provisions of this Agreement in any
      court of the United States located in the State of Delaware or in any
      Delaware state court, this being in addition to any other remedy to which
      they are entitled at Law or in equity. In addition, each of the parties
      hereto (a) consents to submit itself to the personal jurisdiction of any
      federal court located in the State of Delaware state court in the event
      any dispute arises out of this Agreement or any of the transactions
      contemplated by this Agreement, (b) agrees that it will not attempt to
      deny or defeat such personal jurisdiction

                                       7
<PAGE>   8
      by motion or other request for leave from any such court and (c) agrees
      that it will not bring any action relating to this Agreement or any of the
      transactions contemplated by this Agreement in any court other than a
      federal or state court sitting in the State of Delaware.

            (k)   Descriptive Headings.  The descriptive headings used herein
      are inserted for convenience of reference only and are not intended to
      be part of or to affect the meaning or interpretation of this Agreement.

            (l) Counterparts. This Agreement may be executed in counterparts
      (including by facsimile), each of which shall be deemed to be an original,
      but all of which, taken together, shall constitute one and the same
      Agreement. This Agreement shall not be effective as to any party hereto
      until such time as this Agreement or a counterpart thereof has been
      executed and delivered by each party hereto.

      8.    Termination.  This Agreement shall terminate without any further
action on the part of any party hereto on the first to occur of the Effective
Time or the Termination Date.

                              [Signature Page Follows]

                                       8
<PAGE>   9
                 PARENT STOCKHOLDER VOTING AGREEMENT SIGNATURE PAGE

      IN WITNESS WHEREOF, this Agreement has been duly executed and delivered by
the Stockholder and a duly authorized officer of the Company on the day and year
first written above.

                              DURAMED PHARMACEUTICALS, INC.

                              By:  /s/ Jeffrey T. Arington
                                   -------------------------------------------
                                   Name: Jeffrey T. Arington
                                   Title: President & COO

                              SHERMAN DELAWARE, INC.

                              By:   /s/ Dr. Bernard Sherman
                                   -------------------------------------------

                                       9
<PAGE>   10

                                  SCHEDULE I

                                    Part A

<TABLE>
<CAPTION>
Name and Address of Stockholder               Shares of Common Stock
-------------------------------               ----------------------

<S>                                            <C>
Sherman Delaware, Inc.                         11,382,038
150 Signet Drive
Weston, Ontario
Canada M9L 1T9
</TABLE><PAGE>   1
                                                                     Exhibit 4.2

                    COMPANY STOCKHOLDERS VOTING AGREEMENT

      This COMPANY STOCKHOLDERS VOTING AGREEMENT (the "AGREEMENT"), dated as of
this 29th day of June 2001, is entered into by and among BARR LABORATORIES,
INC., a New York corporation ("PARENT"), SOLVAY PHARMACEUTICALS, INC., a Georgia
corporation ("SOLVAY"), Mr. E. Thomas Arington, Chief Executive Officer and
Chairman of the Board of Directors of DURAMED PHARMACEUTICALS, INC., a Delaware
corporation (the "COMPANY" and Mr. E. Thomas Arington is hereinafter
"ARINGTON"), and those other individuals who are directors of the Company listed
on Part A of Schedule I hereto. As used herein, each Solvay, ARINGTON and the
individuals listed on Part A of Schedule I hereto shall individually be referred
to as a "STOCKHOLDER" and collectively, the "STOCKHOLDERS."

                             W I T N E S S E T H:

      WHEREAS, Parent, Beta Merger Sub I, Inc., a Delaware corporation ("MERGER
SUB"), and the Company have entered into an Agreement and Plan of Merger of even
date herewith (as the same may be amended from time to time, the "MERGER
AGREEMENT"), pursuant to which the parties thereto have agreed, upon the terms
and subject to the conditions set forth therein, to merge the Merger Sub with
and into the Company (the "MERGER");

      WHEREAS, as of the date hereof, each Stockholder is the record or
Beneficial Owner (as defined below) of the number of shares (the "SHARES") of
common stock, par value $0.01 per share, of the Company (the "COMPANY COMMON
STOCK"), set forth next to each such Stockholder's name on Part A of Schedule I
hereto; and

      WHEREAS, as a condition to its willingness to enter into the Merger
Agreement, Parent has required that each Stockholder agree, and each Stockholder
is willing to agree, to the matters set forth herein.

      NOW, THEREFORE, in consideration of the foregoing and the agreements set
forth below, the parties hereto agree as follows:

      1.    Definitions.  Capitalized terms not expressly defined in this
Agreement shall have the meanings ascribed to them in the Merger Agreement.
For purposes of this Agreement:

            (a) "BENEFICIALLY OWN" or "BENEFICIAL OWNERSHIP" with respect to any
      securities shall mean having voting power with respect to such securities
      (as determined pursuant to Rule 13d-3(a)(1) under the Exchange Act),
      including pursuant to any agreement, arrangement or understanding, whether
      or not in writing.

            (b) "TERMINATION DATE" shall mean the date of the termination of the
      Merger Agreement pursuant to the terms thereof.

            2. Voting Agreement. From the date of this Agreement and ending on
      the first to occur of the Effective Time or the Termination Date, each
      Stockholder hereby agrees to vote (or cause to be voted) all of such
      Stockholder's Shares (and any and all securities issued or issuable in
      respect thereof) which such Stockholder is entitled to vote,
<PAGE>   2
      at any annual, special or other meeting of the stockholders of the
      Company, and at any adjournment or adjournments thereof, in favor of the
      Merger and the transactions contemplated by the Merger Agreement.

      3.    Covenants, Representations and Warranties of the Stockholders and
Parent.

            (a) Each Stockholder hereby represents, warrants and covenants to
      Parent as follows with respect to itself:

                  (i) Ownership. As of the date of this Agreement, the
            Stockholder is either (A) the record and Beneficial Owner of, or (B)
            the Beneficial Owner but not the record holder of, the number of
            issued and outstanding Shares set forth next to such Stockholder's
            name on Part A of Schedule I hereto and any Options set forth next
            to such Stockholder's name on Part B of Schedule I hereto. As of the
            date of this Agreement, the Shares set forth next to such
            Stockholder's name on Part A of Schedule I hereto constitute all of
            the issued and outstanding Shares owned of record or Beneficially
            Owned by the Stockholder. Except as otherwise set forth in Part A to
            Schedule I hereto, the Stockholder has the sole power to agree to
            all of the matters set forth in this Agreement, in each case with
            respect to all of the Shares set forth next to such Stockholder's
            name on Part A of Schedule I hereto, with no material limitations,
            qualifications or restrictions on such rights, subject to applicable
            securities Laws and the terms of this Agreement.

                  (ii) Power; Binding Agreement. The Stockholder has the legal
            capacity, power and authority to enter into and perform all of the
            Stockholder's obligations under this Agreement. This Agreement has
            been duly and validly executed and delivered by the Stockholder and
            (assuming that this Agreement has been duly and validly executed by
            the other signatories hereto) constitutes a valid and binding
            agreement of the Stockholder, enforceable against the Stockholder in
            accordance with its terms (except as such enforceability may be
            limited by applicable bankruptcy, insolvency, fraudulent transfer,
            reorganization, moratorium, or similar laws of general applicability
            relating to or affecting creditors' rights generally and by general
            equitable principles (regardless of whether enforceability is
            considered in a proceeding in equity or at law)). There is no
            beneficiary or holder of a voting trust certificate or other
            interest of any trust of which the Stockholder is trustee whose
            consent is required for the execution and delivery of this Agreement
            or the consummation by the Stockholder of the transactions
            contemplated hereby. If the Stockholder is an individual and married
            and the Stockholder's Shares constitute community property, this
            Agreement has been duly authorized, executed and delivered by, and
            constitutes a valid and binding agreement of, the Stockholder's
            spouse, enforceable against such person in accordance with its terms
            (except as such enforceability may be limited by applicable
            bankruptcy, insolvency, reorganization or similar Laws affecting
            creditors' rights generally and by general equitable principles
            (regardless of whether enforceability is considered in a proceeding
            in equity or at Law)).

                                       2
<PAGE>   3
                  (iii) No Encumbrances. Except as required by Section 2 hereof,
            at all times during the term hereof, all of the Shares will be held
            by the Stockholder, or by a nominee or custodian for the benefit of
            the Stockholder, or by a family member or Affiliate of the
            Stockholder (subject to the conditions set forth in clause (v)
            below) free and clear of all Liens.

                  (iv) Restriction on Transfer, Proxies and Non-Interference.
            Except as otherwise contemplated by the Merger Agreement or this
            Agreement, from and after the date of this Agreement and ending on
            the first to occur of the Effective Time or the Termination Date,
            the Stockholder shall not (A) offer for sale, sell, transfer,
            tender, pledge, encumber, assign or otherwise dispose of, or enter
            into any contract, option or other arrangement or understanding with
            respect to or consent to the offer for sale, sale, transfer, tender,
            pledge, encumbrance, assignment or other disposition of (each, a
            "TRANSFER") any or all of the Shares, or any interest therein, (B)
            grant any proxies or powers of attorney, deposit any Shares into a
            voting trust or enter into a voting agreement with respect to any
            Shares, (C) enter into any agreement or arrangement providing for
            any of the actions described in clause (A) or (B) above, or (D) take
            any action that would reasonably be expected to have the effect of
            preventing or disabling the Stockholder from performing the
            Stockholder's obligations under this Agreement, unless transferees
            agree to be bound by the terms of this Agreement.

                  (v) Litigation. There is no action pending, or to the
            Knowledge of the Stockholder, threatened against or affecting the
            Stockholder, nor is there any judgment, decree, injunction or order
            of any applicable Governmental Entity or arbitrator outstanding
            against the Stockholder which would prevent the carrying out of this
            Agreement or the Merger Agreement or any of the transactions
            contemplated hereby or thereby, declare unlawful the transactions
            contemplated hereby or thereby or cause such transactions to be
            rescinded.

                  (vi)  Documents Received.  The Stockholder acknowledges
            receipt of a copy of the Merger Agreement, including all
            schedules and exhibits thereto.

                  (vii) Further Assurances. From time to time, at Parent's
            request and without further consideration, the Stockholder shall
            execute and deliver such additional documents as may be reasonably
            necessary or desirable to consummate and make effective, the
            transactions contemplated by this Agreement.

            (b)   Parent hereby represents, warrants and covenants to the
      Stockholders as follows:

                  (i) Organization, Standing and Corporate Power. Parent is a
            corporation duly organized, validly existing and in good standing
            under the Laws of its jurisdiction of organization, with full
            corporate power and authority to own its properties and carry on its
            business as presently conducted. Parent has the corporate power and
            authority to enter into and perform all of its obligations

                                       3
<PAGE>   4
            under this Agreement and to consummate the transactions contemplated
            hereby. This Agreement has been duly and validly executed and
            delivered by Parent and (assuming this Agreement is duly and validly
            executed and delivered by the other signatories hereto) constitutes
            a valid and binding agreement of Parent, enforceable against Parent
            in accordance with its terms (except as such enforceability may be
            limited by applicable bankruptcy, fraudulent transfer,
            reorganization, moratorium or similar laws of general applicability
            relating to or affecting creditors' rights generally and by general
            equitable principles (regardless of whether enforceability is
            considered a proceeding in equity or at Law)).

                  (ii) No Conflicts. No filing with, and no permit,
            authorization, consent or approval of, any Person is necessary for
            the execution of this Agreement by either Parent and the
            consummation by Parent of the transactions contemplated hereby,
            except where the failure to obtain such consent, permit,
            authorization, approval or filing would not interfere with its
            ability to perform its obligations hereunder, and none of the
            execution and delivery of this Agreement by Parent, the consummation
            by Parent of the transactions contemplated hereby or compliance by
            Parent with any of the provisions hereof shall (A) conflict with or
            result in any breach of any applicable organizational documents
            applicable to Parent, (B) result in a violation or breach of, or
            constitute (with or without notice or lapse of time or both) a
            default (or give rise to any third party right of termination,
            cancellation, material modification or acceleration) under any of
            the terms, conditions or provisions of any note, bond, mortgage,
            indenture, license, contract, commitment, arrangement,
            understanding, agreement or other instrument or obligation of any
            kind to which Parent is a party or by which Parent or any of
            Parent's properties or assets may be bound, (C) require any consent,
            approval, authorization or permit of, registration, declaration or
            filing with, or notification to, any Governmental Entity, or (D)
            violate any Legal Provision applicable to Parent or any of Parent's
            properties or assets, in each such case except to the extent that
            any conflict, breach, default or violation would not interfere with
            the ability of Parent to perform its obligations hereunder.

                  (iii) Execution, Delivery and Performance by Parent. The
            execution, delivery and performance of this Agreement and the
            consummation of the transactions contemplated hereby have been duly
            and validly authorized by the Board of Directors of Parent, and
            Parent has taken all other actions required by Law and its
            organizational documents to consummate the transactions contemplated
            by this Agreement.

      4. Recapitalization; Option Exercise. In the event of a stock dividend or
distribution, or any change in the Shares (or any class thereof) by reason of
any split-up, recapitalization, combination, exchange of shares or the like, the
term "Shares" shall include, all such stock dividends and distributions and any
shares into which or for which any or all of the Shares (or any class thereof)
may be changed or exchanged as may be appropriate to reflect such event. The
term "Shares" shall also include any shares of Company Common Stock acquired by

                                       4
<PAGE>   5
any Stockholder after the date of this Agreement and before the first to occur
of the Effective Time or the Termination Date.

      5. Irrevocable Proxy. Each Stockholder hereby grants to, and appoints,
Parent, the Secretary of Parent, any Assistant Secretary of Parent and the Chief
Financial Officer of Parent, in their respective capacities as officers of
Parent, and any individual who shall hereafter succeed to any such office of
Parent, and any other designee of Parent, each of them individually, the
Stockholder's irrevocable proxy (with full power of substitution) to vote the
Stockholder's Shares in favor of the Merger and the transactions contemplated by
the Merger Agreement at any meeting of stockholders of the Company or any
adjournment thereof. Each Stockholder agrees that such proxy is irrevocable
until this Agreement is terminated in accordance with Section 10 hereof and
coupled with an interest and will take such further action or execute such other
instruments as may be necessary to effectuate the intent of this proxy and
hereby revokes any proxy previously granted by the Stockholder with respect to
the Shares.

      6.    Information.      Each Stockholder will provide all information
reasonably requested by Parent for inclusion in the Joint Proxy Statement and
the Registration Statement.

      7. Stockholder Capacity. No Stockholder makes any agreement or
understanding herein in the capacity of a director or officer of the Company.
Each Stockholder executes this Agreement solely in such Stockholder's capacity
as a record owner and/or Beneficial Owner of the Shares and nothing herein shall
limit or affect any actions taken by such Stockholder or any designee of such
Stockholder in such Stockholder's capacity, if any, as a director or officer of
the Company or any of its Subsidiaries; provided, however, that no such duty as
a director or officer of the Company shall excuse any Stockholder from its
obligations as a Stockholder to vote the Shares, to the extent that they may be
so voted, or otherwise perform any obligation as herein provided and to
otherwise comply with the terms and conditions of this Agreement.

      8. Indemnification. Parent shall, to the fullest extent permitted under
applicable Law, indemnify and hold harmless each Stockholder against any costs
or expenses (including attorneys' fees as provided below), judgments, fines,
losses, claims, damages, liabilities and amounts paid in settlement in
connection with any claim, action, suit, proceeding or investigation by or on
behalf of the Company, the Surviving Corporation or any stockholder of the
Company asserting any breach by the Stockholder of any fiduciary duty on such
Stockholder's part to the Company, the Surviving Corporation or the other
stockholders of the Company by reason of the Stockholder entering into this
Agreement, for a period of two years after the later of the date hereof and the
Effective Date. If a Stockholder seeks indemnification from Parent for any such
claim, action, suit, proceeding or investigation (whether arising before or
after the termination of this Agreement), (a) Parent shall pay the fees and
expenses of one counsel selected by such Stockholder and reasonably acceptable
to Parent to represent such Stockholder in connection therewith promptly after
statements therefor are received, and (b) Parent will cooperate in the defense
of any such matter; provided, however, that Parent shall not be liable for any
settlement effected without its written consent (which consent shall not be
unreasonably withheld); provided, further, that in the event that any claim or
claims for indemnification under this Section 9 are asserted or made within such
two-year period, all rights to indemnification in respect of any such claim or
claims shall continue until the final disposition of any and all such

                                       5
<PAGE>   6
claims. This Section 9 shall survive until the latest of the following: (i) two
years from the later of the date hereof and the Effective Date, (ii) the
termination of this Agreement, and (iii) the final disposition of all claims for
indemnification asserted or made within such two-year period.

      9.    Miscellaneous.

            (a) Entire Agreement. This Agreement constitutes the entire
      agreement between the parties with respect to the subject matter hereof
      and supersedes all other prior agreements and understandings, both written
      and oral, between the parties with respect to the subject matter hereof.

            (b)   Amendments, Waivers, Etc.  This Agreement may not be
      amended, changed, supplemented, waived or otherwise modified or
      terminated, except upon the execution and delivery of a written
      agreement executed by the parties hereto.

            (c) Notices. All notices, requests, claims, demands and other
      communications hereunder shall be in writing and shall be given (and shall
      be deemed to have been duly received if so given) by hand delivery,
      telegram, telex or telecopy, or by mail (registered or certified mail,
      postage prepaid, return receipt requested) or by any courier service, such
      as Federal Express, providing proof of delivery. Except for Parent whose
      address is set forth below, all communications hereunder shall be
      delivered to the respective parties at the addresses set forth on Part A
      of Schedule I hereof.

            If to Parent:           Barr Laboratories, Inc.
                                    2 Quaker Road
                                    P.O. Box 2900
                                    Pomona, NY 10970-0519
                                    Attention:  General Counsel
                                    Facsimile No.:  (845) 353-3476

            with a copy to:         Winston & Strawn
                                    200 Park Avenue
                                    New York, New York  10166
                                    Attention:  Robert W. Ericson
                                    Facsimile No.:    (212) 294-4700

      or to such other address as the Person to whom notice is given may have
      previously furnished to the others in writing in the manner set forth
      above.

            (d) Severability. Whenever possible, each provision or portion of
      any provision of this Agreement will be interpreted in such manner as to
      be effective and valid under applicable law but if any provision or
      portion of any provision of this Agreement is held to be invalid, illegal
      or unenforceable in any respect under any applicable law or rule in any
      jurisdiction, such invalidity, illegality or unenforceability will not
      affect any other provision or portion of any provision in such
      jurisdiction, and this Agreement will be reformed, construed and enforced
      in such jurisdiction as if such

                                       6
<PAGE>   7
      invalid, illegal or unenforceable provision or portion of any provision
      had never been contained herein.

            (e) Specific Performance. Each of the parties hereto recognizes and
      acknowledges that a breach by any party of any covenants or agreements
      contained in this Agreement will cause the other party to sustain damages
      for which they would not have an adequate remedy at law for money damages,
      and therefore each of the parties hereto agrees that in the event of any
      such breach the other party shall be entitled to the remedy of specific
      performance of such covenants and agreements and injunctive and other
      equitable relief in addition to any other remedy to which they may be
      entitled, at law or in equity.

            (f) Remedies Cumulative. All rights, powers and remedies provided
      under this Agreement or otherwise available in respect hereof at law or in
      equity shall be cumulative and not alternative, and the exercise of any
      thereof by any party shall not preclude the simultaneous or later exercise
      of any other such right, power or remedy by such party.

            (g) No Waiver. The failure of any party hereto to exercise any
      right, power or remedy provided under this Agreement or otherwise
      available in respect hereof at Law or in equity, or to insist upon
      compliance by any other party hereto with its obligations hereunder, and
      any custom or practice of the parties at variance with the terms hereof,
      shall not constitute a waiver by such party of its right to exercise any
      such or other right, power or remedy or to demand such compliance.

            (h) No Third Party Beneficiaries. This Agreement is not intended to
      be for the benefit of, and shall not be enforceable by, any person or
      entity who or which is not a party hereto; provided that, in the event of
      a Stockholder's death, the benefits and obligations of such Stockholder
      hereunder shall inure to his successors and heirs.

            (i)   Governing Law.  This Agreement shall be governed by, and
      construed in accordance with, the Laws of the State of Delaware,
      without regard to any applicable conflicts of law.

            (j) Jurisdiction. Each of the parties hereto (a) consents to submit
      itself to the personal jurisdiction of any court located in the State of
      Delaware in the event any dispute arises out of this Agreement or any of
      the transactions contemplated by this Agreement, (b) agrees that it will
      not attempt to deny or defeat such personal jurisdiction by motion or
      other request for leave from any such court and (c) agrees that it will
      not bring any action relating to this Agreement or any of the transactions
      contemplated by this Agreement in any court other than a federal or state
      court sitting in the State of Delaware.

            (k)   Descriptive Headings.  The descriptive headings used herein
      are inserted for convenience of reference only and are not intended to
      be part of or to affect the meaning or interpretation of this Agreement.

                                       7
<PAGE>   8
            (l) Counterparts. This Agreement may be executed in counterparts
      (including by facsimile), each of which shall be deemed to be an original,
      but all of which, taken together, shall constitute one and the same
      Agreement. This Agreement shall not be effective as to any party hereto
      until such time as this Agreement or a counterpart thereof has been
      executed and delivered by each party hereto.

      10.   Termination.  This Agreement shall terminate without any further
action on the part of any party hereto on the first to occur of the Effective
Time or the Termination Date.

                              [Signature Page Follows]

                                       8
<PAGE>   9
                COMPANY STOCKHOLDERS VOTING AGREEMENT SIGNATURE PAGE

      IN WITNESS WHEREOF, this Agreement has been duly executed and delivered by
Arington and the individuals listed on Part A of Schedule I hereto and duly
authorized officer of Parent and Solvay on the day and year first written above.

                              BARR LABORATORIES, INC.

                              By:  /s/ Martin Zeiger
                                   ---------------------------------------
                                   Name: Martin Zeiger
                                   Title: Senior Vice President

                              SOLVAY PHARMACEUTICALS, INC.

                              By:  /s/ Harold H. Shlevin
                                   ---------------------------------------
                                   Name: Harold H. Shlevin
                                   Title: President & CEO

                              E. THOMAS ARINGTON

                              /s/ E. Thomas Arington
                              --------------------------------------------

                                       9
<PAGE>   10
SIGNATURE PAGE TO COMPANY STOCKHOLDERS VOTING
AGREEMENT FOR INDIVIDUAL STOCKHOLDERS

/s/ S. Sundararaman
-------------------------------------

                                       10
<PAGE>   11
SIGNATURE PAGE TO COMPANY STOCKHOLDERS VOTING
AGREEMENT FOR INDIVIDUAL STOCKHOLDERS

/s/ Peter R. Seaver
-------------------------------------
<PAGE>   12
SIGNATURE PAGE TO COMPANY STOCKHOLDERS VOTING
AGREEMENT FOR INDIVIDUAL STOCKHOLDERS

/s/ Jeffrey T. Arington
-------------------------------------
<PAGE>   13
SIGNATURE PAGE TO COMPANY STOCKHOLDERS VOTING
AGREEMENT FOR INDIVIDUAL STOCKHOLDERS

/s/ Vernon A. Brunner
-------------------------------------
<PAGE>   14
SIGNATURE PAGE TO COMPANY STOCKHOLDERS VOTING
AGREEMENT FOR INDIVIDUAL STOCKHOLDERS

/s/ Gerald L. Wocken
-------------------------------------
<PAGE>   15
SIGNATURE PAGE TO COMPANY STOCKHOLDERS VOTING
AGREEMENT FOR INDIVIDUAL STOCKHOLDERS

/s/ George W. Baughman
-------------------------------------
<PAGE>   16
SIGNATURE PAGE TO COMPANY STOCKHOLDERS VOTING
AGREEMENT FOR INDIVIDUAL STOCKHOLDERS

/s/ Richard Frankovic
-------------------------------------
<PAGE>   17
                                  SCHEDULE 1

<TABLE>
<CAPTION>
      NAME AND ADDRESS                   PART A                   PART B

<S>                                  <C>                       <C>
Solvay Pharmaceuticals, Inc.         3,000,000                 0

E. Thomas Arington                   812,658 Direct            830,944 (exercisable)
5040 Duramed Drive                   119,025 Indirect          538,428 (not
Cincinnati, Ohio  45213                                        exercisable)

S. Sundararaman                      72,094 Direct             35,000 (exercisable)
1640 Hempstead Turnpike              125,465 Indirect          5,000 (not exercisable)
East Meadow, New York  11554

Peter R. Seaver                      9,343 Direct              35,000 (exercisable)
259 East Michigan, Suite 409                                   10,000 (not
Kalamazoo, Michigan  49007                                     exercisable)

Jeffrey T. Arington                  51,646 Direct             121,200 (exercisable)
5040 Duramed Drive                   17,798 Indirect           127,800 (not
Cincinnati, Ohio  45213                                        exercisable)

Vernon A. Brunner                    178 Direct                10,000 (not
250 East Illinois Road                                         exercisable)
Lake Forest, Illinois  60045

Gerald L. Wolken                     178 Direct                15,000 (exercisable)
11145 Jardin Place                   120,000 Indirect (By      15,000 (not
Cincinnati, OH  45241                Spouse)                   exercisable)

George W. Baughman                   41,343 Direct             40,000 (exercisable)
833 Lakeshore Drive                  16,000 Indirect (By       5,000 (not exercisable)
Columbus, Ohio  43235                Spouse)

Richard Frankovic                    3,473 Direct              17,000 (exercisable)
1650 Brandon Hall Drive                                        13,000 (not
Atlanta, Georgia  30350                                        exercisable)
</TABLE>

                                       17

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00028-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00028-of-00352.parquet"}]]