About 78% of active pharmaceutical ingredient (API) manufacturers are located outside of the United States, India among others.

ITB HOLDINGS LLC
390 North Orange Avenue, Suite 2300
Orlando, FL 32801
United States
T: +1 855 389 7344
T: +1 855 510 2240
T: +44 800 610 1577

https://www.usfda.info/drugs/