5. Merck & Company (MRK)
A direct competitor of Pfizer and Novartis, Merck & Co. is a major pharmaceuticals company with many of its top revenue drugs being specialty medication for particular illnesses. Its wide range of products includes Propecia for male pattern baldness, Gardasil for HPV, Singulair for asthma, and Afluria for the flu. 85% of its revenue is derived from its pharmaceuticals operations, with most from 10 drugs. Januvia is its best-seller to date as an enzyme inhibitor treating Type II diabetes. Zetia, a cholesterol reducing drug and Remicade for colon problems. Gardasil and Isentress are other popular drugs that treat HPV and HIV, respectively. It also produced a cancer treatment drug, Keytruda. With its portfolio, Merck & Co. is an example of a company that pushes innovation in modern medicine.
