Merck & Co. is a global innovative healthcare company with a rich history of 125 years. The company provides a wide range of prescription medicines, vaccines, biologic therapies, and animal health products. Merck’s core product categories include drugs for diabetes, cancer, vaccines, and hospital acute care. A few of Merck’s best-selling products are Keytruda, Lenvima, Lynparza (cancer drugs), Januvia (industry leading diabetic drug), Zetia, etc. The company’s operations are managed through four segments, Pharmaceutical, Animal Health, Healthcare Services, and Alliances segments. The Pharmaceutical (~90% of total sales) and Animal Health (~10%) segments are the only reportable segments. In the human healthcare segment, Merck addresses various medical disciplines such as oncology, hospital acute care, immunology, neuroscience, virology, cardiovascular, diabetes, women’s health, etc. Geographically, the U.S. is Merck’s largest market accounting for 43% of 2018 revenues, followed by EMEA, Asia Pacific, Japan, Latin America, China, and others. The company is known as Merck in the U.S. and Canada and MSD everywhere else. Its customers include physicians, wholesalers, hospitals, physician distributors and government entities.