Merck & Co., Inc. is a global healthcare company focused on developing, manufacturing, and delivering prescription medicines, vaccines, and biologic therapies. Its human health portfolio addresses major disease areas including oncology, infectious diseases, cardiology, immunology, and hospital-based care. The company also operates an animal health business that provides veterinary pharmaceuticals, vaccines, and technology-supported solutions for livestock, companion animals, and aquaculture. Merck & Co., Inc. serves healthcare professionals, hospitals, governments, pharmacies, patients, veterinarians, farmers, and animal owners across international markets. Through research, clinical development, manufacturing, regulatory expertise, and commercial distribution, the company supports the prevention, diagnosis, and treatment of disease. Its role in the pharmaceutical market spans innovative medicines, vaccines, and specialty therapies, while its animal health segment contributes to disease prevention and productivity across food-animal and pet-care industries. Merck & Co., Inc. is headquartered in Rahway, New Jersey, and operates as a major participant in the global healthcare sector.
CEO Mr. Robert M. Davis J.D. · 73,000 employees · United States · https://www.merck.com