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                                                                    Exhibit 99.1

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IMMEDIATE RELEASE

                                        
Media Contact:                             Investor Contact:
Douglas Petkus                             Justin Victoria
Wyeth Pharmaceuticals                      Wyeth
(484) 865-5140                             (973) 660-5340



                    WYETH TO SEEK REHEARING OF COURT RULING

      MADISON, N.J., MAY 25, 2004 - Wyeth (NYSE: WYE) today said it would seek
rehearing of a decision issued by the United States Court of Appeals for the
Third Circuit reversing rulings by U.S. District Court Judge Harvey Bartle III
of the Eastern District of Pennsylvania which excluded certain evidence in state
court diet drug trials. Judge Bartle's rulings applied to class members who had
exercised their right to be an intermediate or back-end "opt out" from the
nationwide diet drug class action settlement.

      The Appeals Court's decision today would limit the District Court's
ability to exclude certain categories of evidence from diet drug cases brought
in state courts. The Court of Appeals stressed, however, the obligation of state
trial judges to "ensure that the parties do not evade" the prohibition on
seeking punitive damages contained in the diet drug settlement agreement.

      The Court of Appeals also noted its expectation that trial judges will
"exclude evidence when its prejudicial effect (namely its tendency to inflame

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the jury and improperly inflate compensatory damages) outweighs its probative
value."

      In addition, the Court of Appeals:

            -     Upheld the exclusion of evidence relevant exclusively to
                  punitive damages.

            -     Stated that the District Court is free to consider other
                  measures to uphold the limitations of the settlement
                  agreement, such as prescribing jury instructions that would
                  make it clear to the jury that punitive damages may not be
                  awarded.

            -     Stated that after a state court trial is concluded, "the
                  District Court is not without recourse in the event that a
                  verdict is rendered that appears to grant punitive damages
                  under the guise of some other damage category."

      Wyeth has 14 days in which to file a petition for rehearing.

      Wyeth is one of the world's largest research-driven pharmaceutical and
health care products companies. It is a leader in the discovery, development,
manufacturing, and marketing of pharmaceuticals, vaccines, biotechnology
products and nonprescription medicines that improve the quality of life for
people worldwide. The Company's major divisions include Wyeth Pharmaceuticals,
Wyeth Consumer Healthcare and Fort Dodge Animal Health.

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