The following companies are the major competitors of Wyeth:

• AstraZeneca PLC
• Sanofi-Aventis Group
• Bayer AG
• Bristol-Myers Squibb Company
• Eli Lilly and Company
• Johnson & Johnson
• Merck & Co., Inc.
• Novartis AG
• Pfizer Inc
• Roche Holding AG
• GlaxoSmithKline Plc
• Procter & Gamble Company,
• The Millennium Pharmaceuticals
• Barr Pharmaceuticals
• Novo Nordisk A/S
• NovaDel Pharma Inc