Merck & Co.

Merck & Co., Inc. is an American multinational pharmaceutical company that develops, manufactures, and distributes prescription medicines, vaccines, biologic therapies, and animal health products. Founded in 1891, the company has more than 130 years of research history. It operates as Merck in the United States and Canada and as MSD in markets elsewhere, and is headquartered in Rahway, New Jersey.

Research activity spans seven therapeutic areas: oncology, vaccines, infectious diseases, cardiometabolic and respiratory diseases, immunology, neuroscience and ophthalmology. Work in these fields is carried out across pharmaceutical research and development, vaccine development and biologic therapies, alongside animal health science for the prevention and treatment of disease in animals.

Merck & Co. operates worldwide, selling its products in the United States, Canada and global markets under the MSD brand. The company states that it fosters an inclusive global workforce and maintains standards of ethics and integrity across its operations, with a focus on a safe, sustainable and healthy future for people and communities, and on following the science to address health threats.