Pfizer sells medicines and vaccines worldwide.
Pfizer discovers, develops, manufactures, markets, and distributes biopharmaceutical products. It sells mainly through wholesalers, while retailers, hospitals, clinics, government agencies, and pharmacies also buy its products. Insurers, government buyers, and other healthcare payers influence which treatments patients can access through formularies, contracts, and rebates. Pfizer earns revenue from product sales, royalties, alliances, and shared profits. Its established medicines and vaccines generate cash, while new products, research, and acquisitions must replace sales lost when patent protection ends and cheaper competitors can enter.