Pfizer Inc. is an American multinational pharmaceutical corporation, ranking among the world's largest pharmaceutical companies. Pfizer's diversified global health care portfolio includes human and animal biologic and small molecule medicines and vaccines, as well as nutritional products and many of the world's best-known consumer products. Pfizer's global footprint extends to more than 150 countries, with its headquarters located in New York City. The corporation is renowned for its contribution towards medical research and development, investing billions annually. This commitment to research has led to the development of a wide range of innovative products that improve human health. Pfizer has a rich history of delivering quality healthcare products and has been instrumental in shaping the future of healthcare. Pfizer works tirelessly in its pursuit to develop and deliver innovative medicines and vaccines that benefit patients worldwide. With a vision to create a healthier world, Pfizer has built a reputation for turning innovative science into solutions for global health challenges.