Power of Attorney for Section 16 Filings

    Know all by these presents, that the undersigned hereby constitutes and
appoints each of Joseph S. Podolski and Louis Ploth, Jr., signing singly,
the undersigned's true and lawful attorney in fact to:

     (1)  execute for and on behalf of the undersigned, in the undersigned's
capacity as an officer and/or director of Zonagen, Inc. (the "Company"),
Forms 3, 4, and 5 in accordance with Section 16(a) of the Securities
Exchange Act of 1934 and the rules thereunder;

     (2)  do and perform any and all acts for and on behalf of the
undersigned which may be necessary or desirable to complete and execute
any such Form 3, 4, or 5, complete and execute any amendment or
amendments thereto, and timely file such form with the United States
Securities and Exchange Commission and any stock exchange or similar
authority; and

     (3)  take any other action of any type whatsoever in connection with the
foregoing which, in the opinion of such attorney in fact, may be of benefit
to, in the best interest of, or legally required by, the undersigned, it being
understood that the documents executed by such attorney in fact on behalf
of the undersigned pursuant to this Power of Attorney shall be in such
form and shall contain such terms and conditions as such attorney in fact
may approve in such attorney in fact's discretion.

     The undersigned hereby grants to each such attorney in fact full power
and authority to do and perform any and every act and thing whatsoever
requisite, necessary, or proper to be done in the exercise of any of the
rights and powers herein granted, as fully to all intents and purposes as
the undersigned might or could do if personally present, with full power of
substitution or revocation, hereby ratifying and confirming all that such
attorney in fact, or such attorney in fact's substitute or substitutes, shall
lawfully do or cause to be done by virtue of this power of attorney and the
rights and powers herein granted.  The undersigned acknowledges that the
foregoing attorneys in fact, in serving in such capacity at the request of the
undersigned, are not assuming, nor is the Company assuming, any of the
undersigned's responsibilities to comply with Section 16 of the Securities
Exchange Act of 1934.

     This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4, and 5 with respect to
the undersigned's holdings of and transactions in securities issued by the
Company, unless earlier revoked by the undersigned in a signed writing
delivered to the foregoing attorneys in fact.

     IN WITNESS WHEREOF, the undersigned has caused this Power of
Attorney to be executed as of this 4th day of February, 2004.

                                       /s/   Jean L. Fourcroy

                                       By:   Jean L. Fourcroy
                                             (Printed Name)