Pfizer Inc.  is an American multinational pharmaceutical corporation headquartered in New York City. It is one of the world's largest pharmaceutical companies. Pfizer ranked No. 57 on the 2018 Fortune 500 list of the largest United States corporations by total revenue. The company develops and produces medicines and vaccines for a wide range of medical disciplines, including immunology, oncology, cardiology, endocrinology, and neurology. … Continue reading Journey of Pfizer Pharmaceutical →