PRESS RELEASE: Wyeth Receives Approval from European Medicines Agency for New BeneFix Features

Wyeth Receives Approval from European Medicines Agency for New BeneFix Features

Enhancements Provide Haemophilia B Patients with a Simpler and More Convenient Preparation Process for Recombinant Factor IX

MAIDENHEAD, England, August 20 -- Wyeth Pharmaceuticals, a division of Wyeth (NYSE: WYE), announced today that it has received approval from the European Medicines Agency (EMEA) for new enhancements for BeneFix(R) nonacog alfa (Recombinant Coagulation Factor IX). These enhancements are designed to offer patients a simpler and more convenient preparation process compared with the original BeneFix preparation process.

The convenience enhancements for BeneFix include:

    -- A 2000 IU dosage strength vial. This is now the largest unit dosage
       vial offered for haemophilia B treatment. As a result, many patients
       will be able to use fewer vials of BeneFix to achieve their desired
    -- A prefilled diluent syringe. This feature allows for fewer components
       and faster preparation compared to the original BeneFix preparation
    -- A 5 ml diluent volume for all dosage strengths, which may decrease the
       overall volume of product required for infusion.
    -- A needleless reconstitution device, which eliminates the risk of
       needlesticks during reconstitution.

"Each of these new features was designed to enable BeneFix patients to spend less time preparing their factor product, to prepare it more safely and to have additional time for themselves," says Gary L. Stiles, M.D., Executive Vice President and Chief Medical Officer, Wyeth Pharmaceuticals.

Recently, Wyeth announced that it has assumed all marketing and distribution rights to BeneFix in Europe following the planned June 30, 2007, conclusion of a 10-year distribution rights agreement between Baxter Healthcare Corporation and Genetics Institute. Genetics Institute was acquired by Wyeth in 1996. Wyeth manufactures and markets recombinant products for both haemophilia A and B patients.

BeneFix is a coagulation factor that uses a recombinant DNA technology to produce clotting factor IX, which stops or prevents bleeding in people with haemophilia B who do not have enough factor IX of their own. BeneFix is a recombinant product and it is inherently free from the risk of transmission of human blood-borne pathogens, such as HIV, hepatitis viruses and parvovirus.

About Haemophilia

Haemophilia B is a rare, inherited blood-clotting disorder. People with haemophilia B are deficient in a key protein - factor IX - which is vital in the clotting mechanism to prevent bleeding. Haemophilia B is characterized by spontaneous haemorrhages or prolonged bleeding, typically into joints and soft tissue. Most patients with haemophilia B are dependent on replacement therapy with factor IX.

About BeneFix

BeneFix is indicated for the treatment and prophylaxis of bleeding in patients with haemophilia B (congenital factor IX deficiency).

About Wyeth Pharmaceuticals

Wyeth Pharmaceuticals, a division of Wyeth, has leading products in the areas of women's health care, infectious disease, gastrointestinal health, central nervous system, inflammation, transplantation, haemophilia, oncology, vaccines and nutritional products. 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 non-prescription 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.