15 Largest Drug Companies in the World

14. Gilead Sciences, Inc. (NASDAQ:GILD)

Revenue – $ 23,147 million

The American drug company primarily deals in development and commercialization of  antiviral drugs used in the treatment of HIV, hepatitis B, hepatitis C, and influenza, including Harvoni and Sovaldi. The company experienced a 17% increase in sales for the third quarter 2020 at $6.6 billion, as compared to the same period in 2019.