Merck & Co., Inc., known as MSD (Merck Sharp & Dohme) outside the United States and Canada, is a leading global biopharmaceutical company headquartered in Rahway, New Jersey, USA. Founded in 1891, Merck is dedicated to discovering, developing, manufacturing, and marketing innovative medicines, vaccines, and animal health products. The company’s mission is to save and improve lives around the world through cutting-edge science and a commitment to patient well-being. With a workforce of over 68,000 employees globally, Merck operates in more than 140 countries and maintains a strong reputation for scientific excellence and ethical responsibility.
Merck’s portfolio spans oncology, vaccines, infectious diseases, cardiometabolic disorders, and animal health. Its cancer immunotherapy drug Keytruda has become a cornerstone of its growth, achieving significant clinical and commercial success. The company has also played a vital role in public health initiatives, including vaccine development for HPV, Ebola, and COVID-19. In recent years, Merck has strengthened its R&D pipeline through strategic acquisitions and collaborations, reinforcing its position as one of the most influential and respected players in the pharmaceutical industry.