Exhibit 10.28

                       AMERICAN HOME PRODUCTS CORPORATION
                                STOCK OPTION PLAN
                           FOR NON-EMPLOYEE DIRECTORS
                         (Effective as of March 2, 1999)


         1. Purpose. The purpose of the American Home Products Corporation Stock
Option Plan for Non-Employee Directors (the "Plan") is to attract and retain
qualified persons who are not employees or former employees of American Home
Products Corporation (the "Company") or any of its subsidiaries or affiliates
for service as members of the Board of Directors of the Company by providing
such members with an interest in the Company's success and progress by granting
them non-qualified options ("Options") to purchase shares of the Company's
common stock, par value $.33 1/3 per share (the "Common Stock").

         2. Administration. The Plan shall be administered by the Compensation
and Benefits Committee or any successor thereto (the "Committee") of the Board
of Directors (the "Board") of the Company. Questions involving eligibility for
grants of Options, entitlement to Options or the operation of the Plan shall be
referred to the Committee. All determinations of the Committee shall be
conclusive. The Committee may obtain such advice or assistance as it deems
appropriate from persons not serving on the Committee.

         3. Eligibility and Grants. To be eligible to participate in the Plan, a
director must not be an employee or former employee of the Company or any of its
subsidiaries or affiliates. On the date in each calendar year of the Annual
Meeting of Stockholders of the Company, each eligible director elected at such
Annual Meeting shall automatically be granted an Option to purchase 3,000 shares
of Common Stock; provided, however, that such amount may be increased or
decreased by the Committee in the first calendar quarter of each year to reflect
the competitive environment with respect to director compensation. Each eligible
director to whom Options are granted is hereinafter referred to as a
"Participant." Each grant of Options shall be evidenced by a written agreement
duly executed and delivered by or on behalf of the Company and the Participant.

         4. Shares Available. Subject to adjustment as provided in Section 10,
the maximum aggregate number of shares of Common Stock which shall be available
under the Plan for the issuance upon the exercise of Options is 250,000 shares.

         5. Term of Options. Each Option granted under the Plan shall have a
term of ten years from the date of grant, subject to earlier termination as
provided in Section 8.

         6. Option Price. Options are priced at 100% of the fair market value of
the Common Stock on the date of grant. Such price shall be subject to adjustment
as provided in Section 10. The fair market value of a share of Common Stock
shall be the mean between the highest and lowest sales prices of the Common
Stock as reported on the Consolidated Transaction Reporting System ("Fair Market
Value").

         7.  Exercise of Options. (a) Subject to Section 8, each Option shall
become 100% exercisable on the later of (i) the date upon which the Participant
has served one term-year as a member of the Board since the date the Option was
granted (which for these purposes shall mean the period from one Annual Meeting
to the subsequent Annual Meeting), and (ii) the date on which the Participant
completes two years of continuous service as a director.

         (b) An Option may be exercised at any time or from time to time, as to
any or all full shares of Common Stock as to which the Option is then
exercisable; provided, however, that any such exercise shall be for at least 100
shares of Common Stock or, if less, the total number of shares of Common Stock
as to which the Option is then exercisable.

         (c) The purchase price of the Common Stock as to which an Option is
exercised shall be paid in full at the time of exercise; payment may be made in
cash or in shares of Common Stock valued at the number of shares to be purchased
multiplied by the option price per share or in any other form of consideration
which has been approved by the Committee under the most recent stock option or
incentive plan applicable to the executive officers of the Company (the "Stock
Incentive Plan").

         8. Completion of Directorship. (a) In the event of the death of a
Participant or the termination of a Participant's service as a director upon
retirement after having attained age 65 with at least 10 years of service or on
account of disability, any outstanding Options held by a Participant who has
completed at least two years of continuous service as a director which are not
yet exercisable shall become exercisable on the day following the date of (i)
death; (ii) retirement; or (iii) termination of the Participant's service as a
director by reason of disability, as the case may be, and all outstanding
Options held by such Participant shall remain exercisable until the tenth
anniversary of the date of grant.

         (b) In the event of a resignation or a termination of the service of a
Participant from the Board (i) for any reason prior to the completion of two
years of continuous service as a director; or (ii) thereafter, for any reason
other than death, disability or retirement as contemplated under subsection (a)
above, any outstanding Options held by such Participant shall expire at the
close of business on the effective date of such resignation or termination;
provided, however, that the Board may, in its discretion, cause the Options of
such Participant to become exercisable, and/or to remain exercisable, for a
period of time subsequent to such resignation or termination, but in no event
may the Options remain exercisable after the tenth anniversary of the date of
grant.

         9. Regulatory Compliance and Listing. The issuance or delivery of any
shares of Common Stock upon the exercise of Options may be postponed by the
Company for such period as may be required to comply with any applicable
requirements under the federal securities laws, any applicable listing
requirements of any national securities exchange and requirements under any
other law or regulation applicable to the issuance or delivery of such shares,
and the Company shall not be obligated to issue or deliver any shares of Common
Stock if the issuance or delivery of such shares shall constitute a violation of
any provision of any law or of any rule or regulation of any governmental
authority or any national securities exchange.

         10. Adjustment in Event of Changes in Capitalization. In the event of a
recapitalization, stock split, stock dividend, combination or exchange of
shares, merger, consolidation, rights offering, separation, reorganization or
liquidation, or any other change in the corporate structure or shares of the
Company, the number of shares of Common Stock that may be awarded as Options or
that are subject to outstanding Option grants, and the option price per share
under outstanding Options, shall be adjusted automatically to prevent dilution
or enlargement of rights.

         11.  Termination or Amendment of the Plan. The Board may at any time
terminate the Plan and may from time to time alter or amend the Plan or any part
thereof (including any amendment deemed necessary to ensure that the Company may
comply with any regulatory requirement referred to in Section 9), provided that,
unless otherwise required by law, the rights of a Participant with respect to
Options granted prior to such termination, alteration or amendment may not be
impaired without the consent of such Participant.

         12. Miscellaneous. (a) Nothing in the Plan shall be deemed to create
any obligation on the part of the Board to nominate any director for reelection
by the Company's shareholders.

         (b) The Company shall have the right to require, prior to the issuance
or delivery of any Common Stock upon the exercise of Options, payment by the
Participant of any taxes required by law with respect to the issuance or
delivery of such shares. Such amount may be paid in cash, in shares of Common
Stock previously owned by the Participant (based on the Fair Market Value), or a
combination of cash and shares of Common Stock.

         (c) The shares of Common Stock to be issued upon the exercise of
Options under the Plan shall, unless otherwise determined by the Committee, be
shares which have been or may be reacquired by the Company.

         (d) The Options granted hereunder shall not be transferable by the
Participants hereunder otherwise than by will or the laws of descent and
distribution except to the extent permitted under the Stock Incentive Plan with
respect to executive officers of the Company.

         (e) This Plan and Options granted hereunder shall be governed by and
construed in accordance with the laws of Delaware and in accordance with such
federal laws as may be applicable.