Merck & Co.
Merck & Co. is the world’s seventh largest pharmaceutical company by market capitalization and revenue. Its headquarters is located in Kenilworth, New Jersey. The Merck Manuals, a series of medical reference books for physicians, nurses, technicians, and veterinarians, is the company’s best-selling medical reference. Merck Sharp & Dohme outside the United States and Canada, is a subsidiary of Merck.