Merck Sharp & Dohme Limited (MSD) is the UK subsidiary of Merck & Co., Inc., of Whitehouse Station, New Jersey, USA, a leading a research-based pharmaceutical company that discovers, develops, manufactures and markets a wide range of innovative pharmaceutical products to improve human health.

MSD has committed substantial investment in research and manufacturing in the UK because of the unrivalled scientific excellence and skills base available here. It has two sites in the UK: headquarters and pharmaceutical research and development laboratories in Hoddesdon, Hertfordshire; and manufacturing at Cramlington in Northumberland. 

Our mission is to provide superior medicines which enhance patients' quality of life.  At Merck Sharp & Dohme Limited (MSD) we employ the best people, exceptional ideas and breakthrough research to make world-leading products. MSD has played a key role in the development of six of Merck & Co., Inc.' products.
Products in our portfolio include treatments for asthma, cardiovascular problems, emesis, glaucoma, gout, hair loss, HIV/AIDS, benign prostatic hyperplasia, infection, migraine, osteoarthritis, osteoporosis and arthritis.