Founded in 1849, Pfizer is one of the world's largest research-based pharmaceutical companies that discovers, develops, manufactures and delivers a variety of prescription medicines to treat and help prevent disease for people and animals. The company has partnerships with various health care service providers, government authorities and local communities worldwide. Headquartered in New York City, it provides a range of medicines for curing cancer, infections, tumors, and gynecology, heart and mental diseases. Pfizer develops Marax Tablets, Medrol, Navane, Chantix, Cleocin and Sutent. With annual sales revenue of more than $48 billion, the company employs over 85,000 professionals in nearly 150 countries.