Exhibit 99.2
                             CO-PROMOTION AGREEMENT
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     This Co-Promotion Agreement ("Agreement") is entered into as of the 21st
day of June, 1999 (the "Effective Date") between ALZA Corporation ("ALZA") and
▇▇▇▇▇▇ Laboratories Inc. ("ABBOTT").
     WHEREAS, ALZA markets Ditropan XL7, a proprietary controlled release
urinary incontinence product; and
     WHEREAS, ABBOTT desires to co-promote Ditropan XL7 with ALZA in the United
States, in accordance with the terms and conditions of this Agreement.
     NOW THEREFORE, in consideration of the mutual covenants contained herein,
the parties agree as follows:
     1.  Definitions.  For purposes of this Agreement, the following definitions
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shall be applicable:
          1.1  "Contract Month" means a full calendar month (except that the
     first Contract Month shall start on the day of the ABBOTT launch of the
     Sales Call effort and end on the last day of such calendar month, and the
     last Contract Month shall mean the calendar month in which this Agreement
     terminates).
          1.2  "Net Sales" means gross sales of the Product (as set forth on the
     invoice for such Product) in the United States for use in the United States
     by ALZA and any ALZA affiliate, to unrelated third parties, in arm's length
     transactions, including but not limited to, pharmaceutical wholesalers,
     pharmacies, hospitals, or dispensing physicians, less any of the following
     charges or expenses that are incurred in connection with gross sales of the
     Product during the Term:
          (i)   discounts, including cash discounts, customary trade allowances
                or rebates actually taken or allowed, governmental rebates,
                charge-backs, and group purchasing management fees for formulary
                access;
          (ii)  credits or allowances given or made for rejection, recall or
                return (including return reserves) of previously sold Product
                actually taken or allowed;
          (iii) any tax or governmental charge (including any tax such as a
                value added or similar tax or government charge) to the extent
                it appears on Product invoices (other than an income tax levied
                on the sale, transportation or delivery of Product); and
          (iv)  freight, insurance and duties on shipments of Product.
     The parties agree that the only discounts, allowances or rebates permitted
     to be charged against "Net Sales" hereunder shall be those that are
     extended by ALZA in good faith and consistent with discounts, allowances or
     rebates extended by ALZA on other ALZA products in the ordinary course of
     business.
          1.3  "Product" means Ditropan XL7, a proprietary controlled release
     urinary incontinence product currently marketed by ALZA in the United
     States.
          1.4  "Representative" means a sales employee of ALZA or ABBOTT, as the
     case may be, trained to make Sales Calls to the Target Audience.
          1.5  "Sales Call" means a presentation to a member of the Target
     Audience by a Representative during which such Representative promotes the
     Product.  "Sales Call" may also refer to a presentation to a member of the
     Target Audience by a sales employee of Innovex, Inc. ("Innovex") or UCB
     Pharma, Inc. ("UCB") in accordance with the terms of ALZA's agreements with
     Innovex and UCB, respectively, during which such sales employee promotes
     the Product.
          1.6  "Sales Quarter" shall mean a period of three (3) consecutive
     Contract Months, except that the first Sales Quarter shall mean the period
     from the launch of ABBOTT Sales Calls through the end of the calendar month
     and the following three (3) Contract Months.
          1.7  "Target Audience" means general practitioners, urologists and
     other medical personnel in a position to prescribe the Product.
          1.8  "Term" means the period commencing on the Effective Date and
     ending ninety (90) days following the date of launch of the ABBOTT Sales
     Call effort, as the Term may be extended pursuant to Section 6 hereof.
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     2.   Co-promotion Activities
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          2.1  Appointment and Acceptance.  ALZA hereby appoints ABBOTT, and
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ABBOTT hereby accepts appointment, as a co-promoter of Product in the United
States in accordance with the terms and conditions of this Agreement.  In the
event that ALZA desires to add additional Sales Calls to its marketing effort
through a co-promotion arrangement with a third party, ALZA agrees that ABBOTT
shall have a right of first negotiation to perform such Sales Calls, and the
parties agree to negotiate in good faith the terms for ABBOTT performing such
additional Sales Calls.  If the parties are unable to agree on such terms, ALZA
agrees that it shall not offer more favorable terms to a third party without
first re-offering the additional Sales Calls to ABBOTT on such more favorable
terms.
          2.2  Scope of Co-Promotion.  Abbott Representatives shall perform
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Sales Calls on the Target Audience as follows:
               (a) ABBOTT Representatives shall perform a minimum of fifteen
          thousand (15,000) Sales Calls per Contract Month (except for the first
          and last
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          Contract Months in which ABBOTT Representatives shall perform an
          appropriate number of Sales Calls as determined by ABBOTT). In the
          event ABBOTT fails to perform such required minimum Sales Calls by a
          variance of minus ten percent (10%) or less, ABBOTT shall be entitled
          to make up such variance by performing all of such variance in the
          subsequent Contract Month, in which case ABBOTT shall be compensated
          for such variance.
               (b) All Sales Calls by ABBOTT Representatives shall be performed
          in the first position.
               (c) ABBOTT Representatives shall deliver promotional materials
          supplied by ALZA pursuant to Section 2.7 to the Target Audience.
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          ABBOTT shall not distribute any other Product promotional materials.
               (d) ABBOTT Representatives shall perform Sales Calls in
          accordance with approved labeling and all applicable laws and
          regulations, including but not limited to the Food, Drug and Cosmetics
          Act of 1938, as amended, and the Prescription Drug Marketing Act of
          1987, as amended.
               (e) ABBOTT shall launch the Sales Calls by the ABBOTT
          Representatives within thirty (30) days after the Effective Date.
          2.3  ALZA Sales Calls Efforts.  ALZA Representatives shall continue to
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     perform Sales Calls substantially in accordance with (or greater than) its
     current level of performance, which, when combined with the number of Sales
     Calls required of Innovex, is equal to fourteen thousand (14,000) Sales
     Calls per month.
          2.4  Sales Calls Tracking.  Each party shall keep track of the number
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     and position of Sales Calls by its Representatives in accordance with its
     normal internal reporting procedures.  From time to time upon the
     reasonable request of a party, the other party shall provide a report with
     respect to the number of Sales Calls performed by its Representatives
     during the preceding time period.  In addition, from time to time, upon
     request by ABBOTT, ALZA shall provide a report with respect to the number
     of Sales Calls performed by Innovex and UCB, respectively.  Each party
     shall have the right from time to time to accompany Representatives of the
     other party on Sales Calls or otherwise audit Sales Calls for compliance
     with this Agreement.
          2.5  Communication.  ABBOTT and ALZA shall meet at least once in each
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     Sales Quarter during the Term to review co-promotion effectiveness and to
     formulate and implement Sales Calls strategies and other aspects of the co-
     promotion.  Each party will designate an individual responsible for
     overseeing that party's day-to-day performance under this Agreement.
     ALZA's initial designee is ▇▇. ▇▇▇ ▇▇▇▇▇▇▇ and ▇▇▇▇▇▇'▇ initial designee is
     Mr. ▇▇▇▇▇▇ ▇▇▇▇▇▇.  Either party may change its designate by written notice
     to the other.
          2.6  Training.  ALZA will provide, at ALZA's expense (except for
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     ▇▇▇▇▇▇ personnel travel and lodging expense), an initial training meeting,
     within fourteen (14) days after the Effective Date, with ▇▇▇▇▇▇ personnel
     to prepare ABBOTT to train its
                                      -3-
     Representatives on the Product. In addition, ALZA shall provide ABBOTT with
     Product training materials for all ABBOTT Representatives. All other
     training expenses of ABBOTT Representatives shall be at the sole expense of
     ABBOTT.
          2.7  Promotional Materials; Samples.  ALZA shall provide to ABBOTT,
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     without charge, currently available promotional materials specific to the
     Product, in sufficient quantities for ABBOTT to perform its obligations
     hereunder.  ABBOTT shall use promotional materials for the Product supplied
     by ALZA or approved in writing by ALZA and the approved Product labeling
     and will not deviate from the text of such materials and/or labeling.  In
     addition, ALZA shall supply ABBOTT, without charge, Product samples for
     distribution by the ABBOTT Representatives at a level of samples consistent
     with that supplied by ALZA to its own Representatives.  ABBOTT shall cause
     its Representatives to comply with all federal, state and local laws, rules
     and regulations concerning the handling, distribution and tracking of
     samples, and ABBOTT shall maintain all required records to enable ALZA to
     account for and track such samples.
          2.8  Product Complaints.  ABBOTT shall give ALZA notice of any
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     complaint or correspondence concerning the Product, including, but not
     limited to, any adverse drug experience associated with the Product, in
     accordance with the following procedure:
               (i)  information concerning any adverse drug experience
          associated with a Product shall be reported to ALZA's Director of
          Medical Safety by telefax within twenty-four (24) hours and by hard
          copy in writing three (3) days after initial receipt of such
          information;
               (ii) all Product complaints not covered by (i) above shall be
          reported in writing within twenty (20) calendar days following receipt
          of such complaint.  Such reports shall contain (a) the date the report
          was received; (b) the name of the reporter; (c) the address and
          telephone number of the reporter; and (d) an indication of the adverse
          drug experience.
     3.  Compensation.
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               (a)  For the period from the date of launch of the ABBOTT Sales
          Call effort through the end of the initial ninety (90) day Term, ALZA
          shall pay ABBOTT the sum of Three Million One Hundred Fifty Thousand
          Dollars ($3,150,000.00) in consideration for ABBOTT performing forty
          five thousand (45,000)Sales Calls as required hereunder, so long as
          Net Sales are at least Seven Million Dollars ($7,000,000.00) during
          the period commencing July 1, 1999 through the end of the initial
          Term.  In any Contract Month during any extension of the initial Term,
          the preceding figures shall be One Million Fifty Thousand Dollars
          ($1,050,000.00) consideration, fifteen thousand (15,000) Sales Calls
          and Two Million Three Hundred Thirty Three Thousand Three Hundred
          Thirty Three Dollars ($2,333,333.00) in baseline Net Sales.  ALZA
          shall have no obligation to pay ABBOTT for Sales Calls conducted by
          ABBOTT Representatives in excess of forty five thousand (45,000) Sales
          Calls over the initial Term (and in excess of fifteen thousand
          (15,000) Sales Calls per each Contract Month during any
                                      -4-
          extension of the initial Term). If ABBOTT performs less than forty
          five thousand (45,000) Sales Calls from the date of launch through the
          end of the initial Term (or less than fifteen thousand (15,000) Sales
          Calls for any Contract Month during any extension of the initial Term,
          then ALZA shall only pay a proportionate amount of Three Million One
          Hundred Fifty Thousand Dollars ($3,150,000.00) for those Sales Calls
          which ABBOTT has performed (One Million Fifty Thousand Dollars
          ($1,050,000.00) for any Contract Month during any extension of the
          initial Term, subject to ▇▇▇▇▇▇'▇ right to make up a variance in the
          number of Sales Calls performed in a given Contract Month as provided
          in Section 2.2(a) hereof. For example, if ABBOTT performs forty
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          thousand (40,000) Sales Calls during the initial Term, ALZA would be
          obligated to pay ABBOTT Two Million Eight Hundred Thousand Dollars
          ($2,800,000.00), subject to ▇▇▇▇▇▇'▇ right to make up the variance in
          the number of Sales Calls performed as provided in Section 2.2(a)
                                                             --------------
          hereof. Subject to Section 7.3 hereof, such reduction in compensation
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          shall be ALZA's sole and exclusive remedy with respect to ▇▇▇▇▇▇'▇
          non-performance of Sales Calls hereunder. At the end of the initial
          Term (and at the end of each Contract Month thereafter during any
          extension of the initial Term, ABBOTT shall issue an invoice to ALZA
          for Sales Calls performed by ABBOTT during the applicable period, and
          ALZA agrees to pay the amount of such invoice within thirty (30) days
          after issuance.
               (b)  Within thirty (30) days after the end of each Sales Quarter,
          ALZA shall provide ABBOTT with a report showing:  (i) gross sales of
          the Product in the U.S. for such Sales Quarter; (ii) a calculation
          demonstrating the adjustments to gross sales in order to arrive at Net
          Sales; and (iii) the calculation of the commission payable, including
          any adjustments to the commission payable.
               (c)  If ABBOTT, in its reasonable judgment, determines that an
          audit of ALZA's relevant books and records is necessary to verify the
          information supplied by ALZA pursuant to Section 3(c), then ▇▇▇▇▇▇'▇
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          designee, under duty of confidentiality to ALZA and ABBOTT, and
          provided such designee is an independent certified public accountant,
          shall have the right, on fifteen (15) days advance written notice, at
          ▇▇▇▇▇▇'▇ expense, to perform an audit of the relevant books and
          records of ALZA not more than once in any twelve (12) month period to
          verify the information supplied by ALZA.  If an audit reveals that
          there has been a variance of two percent (2%) or more in the
          determination of the applicable Net Sales, then the cost for such
          audit shall be paid by ALZA.
     4.   Terms of Sales and Market Support Responsibility.  All terms of sale
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for Product, including, without limitation, policies concerning pricing, credit
terms, cash discounts and returns and allowances shall be set by ALZA.  All
sales of Product shall be recorded on the books of ALZA.  ABBOTT is not
authorized to negotiate pricing issues with regard to the Product or make any
representations about such Product except as included in promotional materials
provided hereunder and/or in the Product labeling.
     5.   Records.  Each party shall keep complete and accurate records as are
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required to implement and administer this Agreement.
                                      -5-
     6.   Term.  The Term shall commence on the Effective Date and terminate
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ninety (90) days following the date of launch of the ABBOTT Sales Call effort,
unless earlier terminated pursuant to Article 7.  ABBOTT may extend the Term for
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one or more additional thirty (30) day periods (but not to extend beyond April
30, 2000) by providing ALZA with at least fifteen (15) days advance written
notice prior to expiration of the then existing Term.
     7.   Termination.
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          7.1  Termination.  This Agreement may be terminated at any time by
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     either party without cause upon thirty (30) days prior written notice.
          7.2  Breach.  Either party may terminate this Agreement for material
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     breach on thirty (30) days notice to the other party specifying the breach.
     If such breach is not cured within such thirty (30) day period, then this
     Agreement shall terminate at the end of such notice period.
          7.3  Termination by ALZA.  ALZA may terminate this Agreement on thirty
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     (30) days notice to ABBOTT if ABBOTT fails to make at least thirty thousand
     (30,000) Sales Calls during any three (3) consecutive Contract Months.
          7.4  Effects of Termination.  Upon termination of this Agreement for
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     any reason, ABBOTT shall deliver to ALZA any and all of its inventory of
     Product samples and other promotional material relating to the Product.
     Expiration or termination of this Agreement shall not affect the remedies
     of the parties otherwise available at law or equity in relation to any
     rights accrued under this Agreement prior to expiration or termination.
     8.   Liability.
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          8.1  Indemnification by ALZA.  ALZA shall defend, indemnify and hold
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     harmless ABBOTT and its officers, directors, agents and employees
     (collectively, the "Abbott Indemnitees"), from and against any and all
     liability, loss, damages and expenses (including attorneys' fees) as a
     result of claims, demands, costs or judgements (collectively, the "Losses")
     arising out of or resulting from:
               (i)   any negligent act or omission or willful misconduct of ALZA
          and its directors, officers or employees or Representatives with
          respect to the promotion of Product, including but not limited to
          product liability claims arising out of out-of-label promotions by
          ALZA, its directors, officers or employees or Representatives; or
               (ii)  any violation of approved labeling or applicable statute or
          regulation with respect to the Product, or
               (iii  breach of this Agreement by ALZA, or
                                      -6-
               (iv)  the manufacturing, marketing, sale or use of the Product,
          including any Product liability claims and/or patent infringement
          claims, or
               (v)   any claim, warranty or representation by ALZA, with respect
          to the Product, or
               (vi)  any infringement claim related to ▇▇▇▇▇▇'▇ use of the ALZA
          name or logo of the ALZA trademarks in connection with the promotion
          or sale of the Product, provided ▇▇▇▇▇▇'▇ use is in compliance with
          the terms of this Agreement.
     Provided, however, that ALZA shall not be required to indemnify ABBOTT to
     the extent that such Losses arise out of or result from:  (1) the
     negligence, recklessness or willful misconduct of the Abbott Indemnitees,
     including, but not limited to, out-of-label promotion of the Product; and
     or (2) any breach by ABBOTT of this Agreement.  ABBOTT shall not be
     considered negligent for purposes of this Section or Section 8.2 if such
     claim arises with respect to the content of the promotional materials,
     Product labeling or other materials provided to ABBOTT by ALZA as long as
     ABBOTT has distributed or employed such promotional materials as directed
     herein.
     ALZA shall have the exclusive right to control the defense of any action
     which is to be indemnified in whole by ALZA hereunder, including the right
     to select counsel reasonably acceptable to ABBOTT to defend ABBOTT and to
     settle any claim, provided that, without the written consent of ABBOTT
     (which shall not be unreasonably withheld or delayed), ALZA shall not agree
     to settle any claim against ABBOTT.  The provision of this Section shall
     survive and remain in full force and effect after termination, expiration
     or cancellation of this Agreement.
          8.2  Indemnification by ▇▇▇▇▇▇.  ▇▇▇▇▇▇ shall defend, indemnify and
               -------------------------
     hold harmless ALZA and its officers, directors, agents and employees
     (collectively, the "ALZA Indemnitees"), from and against any and all
     liability, loss, damages and expenses (including attorneys' fees) as a
     result of claims, demands, costs or judgments (collectively, the "Losses")
     arising out of or resulting from:
               (i)   any negligent act or omission or willful misconduct of
          ABBOTT with respect to the co-promotion of the Product, or
               (ii)  any breach of this Agreement by ABBOTT.
     Provided, however, that ABBOTT shall not be required to indemnify the ALZA
     Indemnitees to the extent that any Losses arise out of or result from:  (1)
     the negligence, recklessness, or willful misconduct of any ALZA Indemnitee,
     including but not limited to, out-of-label promotion of the Product; and/or
     (2) any breach by ALZA of this Agreement.
     ABBOTT shall have the exclusive right to control the defense of any action
     which is to be indemnified in whole by ABBOTT hereunder, including the
     right to select counsel
                                      -7-
     reasonably acceptable to ALZA to defend ALZA and to settle any claim,
     provided that, without the written consent of ALZA (which shall not be
     unreasonably withheld or delayed), ABBOTT shall not agree to settle any
     claim against ALZA. The provision of this Section shall survive and remain
     in full force and effect after termination, expiration or cancellation of
     this Agreement.
          8.3  Indemnification Procedure.  If any claims are made against an
               -------------------------
     indemnified party as to which the indemnification provisions set forth in
     this Article 8 may apply, as soon as reasonably practicable, the
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     indemnified party will inform the other party thereof and the indemnifying
     party and/or its insurers will assume the defense of any such claims.  The
     indemnified party will cooperate in the disposition of any such matters.
     The indemnified party shall have the right to participate at its own
     expense in the defense of any such claim.
          8.4  Disclaimer of Consequential Damages.  IN NO EVENT SHALL EITHER
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     ABBOTT OR ALZA BE LIABLE TO THE OTHER FOR ANY SPECIAL, CONSEQUENTIAL OR
     INCIDENTAL DAMAGES ARISING UNDER OR AS A RESULT OF THIS AGREEMENT (OR THE
     TERMINATION HEREOF).
     9.   Relationship of the Parties.  Each party is performing hereunder as an
          ---------------------------
independent contractor of the other party and its employees and representatives
are not eligible to participate in any benefits programs offered by the other
party to its employees, or in any pension plans, profit sharing plans, insurance
plans or any other employee benefits plans.  Each party acknowledges and agrees
that it shall be solely responsible for designing and administering any
incentive program to its Representatives in respect to their activity promoting
the Product; and for paying all salaries, wages, benefits and other compensation
which its employees may be entitled to receive in connection with the
performance of this Agreement.  Except as specifically set forth herein, no
employees or representatives of a party shall have any authority to bind or
obligate the other party to this Agreement for any such or in any manner
whatsoever, or to create or impose any contractual or other liability on the
other party without such other party's authorized written approval.  For all
purposes and notwithstanding any provision of this Agreement to the contrary,
the parties' legal relationship under this Agreement shall be that the parties
are independent of each other and not that of partners or joint venturers.
Neither party hereto is authorized to make any statements or representations on
behalf of the other party or in any way obligate the other party, except as
expressly authorized in writing by the other party.
     10.  Confidential Information.  Except as otherwise expressly provided
          ------------------------
under this Agreement, each party shall hold in confidence, and not use for any
purpose other than performing it obligations under this Agreement, all
confidential information concerning the other party, including, without
limitation, the amount of net sales of the Product.  "Confidential Information"
shall not include information:  (a) which is or becomes generally available to
the public other than as a result of disclosure thereof by the receiving party;
(b) which is lawfully received by the receiving party on a nonconfidential basis
from a third party that is not itself under any obligation of confidentiality or
nondisclosure to the disclosing party or any other person with respect to such
information; (c) which by written evidence can be shown by the receiving party
to have been independently developed by or for the receiving party; or (d) which
                                      -8-
the receiving party establishes by competent proof was in its possession at the
time of disclosure by the other party and was not acquired, directly or
indirectly from the other party.
     11.  Right of First Negotiation.  ALZA hereby grants to ABBOTT and ABBOTT
          --------------------------
hereby accepts a first right of negotiation from the Effective Date through
April 30, 2000 to obtain from ALZA co-promotion and/or license rights to ▇▇▇▇(R)
Methylphenidate in the U.S.  In the event ALZA elects to co-promote with and/or
license rights to a third party with respect to ▇▇▇▇(R) Methylphenidate in the
U.S., then prior to entering into such negotiations with a third party, ALZA
shall prepare and submit to ABBOTT a data package which shall consist of at
least the following information:  stage of development, therapeutic category,
targeted indications, mechanism of action, safety profile, and anticipated FDA
submission date.  If ABBOTT notifies ALZA within thirty (30) days of its receipt
of the data package of its desire to pursue discussions to co-promote and/or
license ▇▇▇▇(R) Methylphenidate in the U.S., then the parties shall, in good
faith, proceed within three (3) months thereafter to negotiate the terms of a
co-promotion and/or license agreement, as the case may be.  ALZA shall not grant
any third party any rights that conflict with ▇▇▇▇▇▇'▇ right of first
negotiation unless ABBOTT has waived its right to exercise its right of first
negotiation to co-promote and/or license with respect to ▇▇▇▇(R)
Methylphenidate.  If the parties are not able to agree on the terms of a co-
promotion and/or license, as the case may be, after good faith negotiations,
within three (3) months of ▇▇▇▇▇▇'▇ notice, then ALZA shall not offer co-
promotion and/or license rights to any third party for ▇▇▇▇(R) Methylphenidate
on economic terms and/or structure of the overall arrangement more favorable to
such third party than those last offered to ABBOTT, without first re-offering
such rights to ABBOTT on such terms in accordance with the procedures set forth
in this Article 11, provided that in such case the period for ABBOTT to exercise
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its rights and negotiate a written agreement shall be thirty (30) days.
     12.  Miscellaneous.
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          12.1   Compliance with Law.  In performing the co-promotion activities
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     contemplated by this Agreement, each party shall comply with all applicable
     federal and state laws and regulations (including without limitation the
     Prescription Drug Marketing Act and laws relating to "fraud and abuse" in
     Medicare or Medicaid) and shall not be required to perform any service in
     respect to a Product if in doing so it might violate any such law or
     regulation.
          12.2   Amendment.  This Agreement may not be amended except in writing
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     signed by both parties.
          12.3   Governing Law.  This Agreement shall be governed and construed
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     in accordance with the laws of the state of New York as applied to
     residents of that state entering into agreements wholly to be performed in
     that state.
          12.4   Notices.  Notices required under this Agreement shall be in
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     writing and sent by registered or certified mail, postage prepaid, or by
     telex or facsimile and confirmed by registered or certified mail and
     addressed as follows:
                                      -9-
     If to ALZA:         ALZA Corporation
                         950 Page Mill Road
                         ▇.▇. ▇▇▇ ▇▇▇▇▇
                         ▇▇▇▇ ▇▇▇▇, ▇▇ ▇▇▇▇▇-▇▇▇▇
                         Attn:  Senior Vice President and General Counsel
                         Fax:  (▇▇▇) ▇▇▇-▇▇▇▇
     If to ▇▇▇▇▇▇:       ▇▇▇▇▇▇ Laboratories Inc.
                         ▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇ ▇▇▇▇
                         ▇▇▇▇. ▇▇▇▇, ▇▇▇▇. ▇▇▇
                         ▇▇▇▇▇▇ ▇▇▇▇, ▇▇ ▇▇▇▇▇-▇▇▇▇
                         Attn:   Senior Vice President, Secretary
                                 and General Counsel
                         Fax:  (▇▇▇) ▇▇▇-▇▇▇▇
     All notices shall be deemed to be effective five (5) days after the date of
     mailing or upon receipt if sent by telefax or facsimile (but only if
     followed by certified or registered confirmation).  Either party may change
     the address at which notice is to be received by written notice pursuant to
     this Section 12.4.
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          12.5   Publicity.  ABBOTT and ALZA agree not to disclose any terms or
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     conditions of this Agreement to any third party or to make any public
     statement about this Agreement without the prior consent of the other party
     (which consent shall not be unreasonably withheld or delayed) except as is
     required by applicable law, rule or regulation.
          12.6   Severability.  If any provision of this Agreement is held by a
                 ------------
     court of competent jurisdiction to be invalid or unenforceable, it shall be
     modified, if possible, to the minimum extent necessary to make it valid and
     enforceable or, if such modification is not possible, it shall be stricken
     and the remaining provisions shall remain in full force and effect, unless
     the deletion of such provision or provisions would result in such a
     material change as to cause completion of the transactions contemplated
     herein to be impossible and provided that the performance required by this
     Agreement with such clause deleted remains substantially consistent with
     the intent of the parties.
          12.7   Headings.  The headings set forth at the beginning of the
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     various sections of this Agreement are for reference and convenience and
     shall not affect the meanings of the provisions of this Agreement.
          12.8   Assignment.  This Agreement may not be assigned or otherwise
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     transferred by either party without the consent of the other party.  Any
     purported assignment in violation of the proceeding sentences shall be
     void.  Any permitted assignee shall assume all obligations of its assignor
     under this Agreement (provided that such assigning party shall remain
     primarily liable hereunder in the case of any assignment to an affiliate).
     Notwithstanding the foregoing, this Agreement shall be binding upon and
                                     -10-
     inure to the benefit of any successor by merger to either of the parties,
     whether by purchase of a controlling interest of such party's stock, assets
     or otherwise.
          12.9   Survival.  The provisions of Sections 2.8, 3 (only as to
                                              ---------------------------
     amounts accrued to the termination date), 7.4, 8, 10, 11, 12.3, 12.4, 12.5,
     --------------------------------------------------------------------------
     12.8 and this Section 12.9 shall survive the expiration or termination of
     ----          ------------
     of this Agreement.
          12.10  Entire Agreement.  This Agreement sets forth the entire
                 ----------------
     understanding between the parties hereto as to the subject matter hereof
     and supersedes all other documents, agreements, verbal consents,
     arrangements and understandings by or between the parties with respect to
     the subject matter hereof.
          12.12  Counterparts.  The Agreement may be executed simultaneously in
                 ------------
     any number of counterparts and may be executed by facsimile.  All
     counterparts collectively constitute one and the same Agreement.
▇▇▇▇▇▇ LABORATORIES INC.              ALZA CORPORATION
By:    /s/ Miles ▇. ▇▇▇▇▇             By:    /s/ ▇▇▇▇▇▇ ▇▇▇▇▇
       _____________________                 _______________________
Title: Chairman & CEO                 Title: Chairman & CEO
       _____________________                 _______________________
                                     -11-