Skip to main content

FD&C Green No. 3

Medically reviewed by Last updated on Jun 9, 2023.

Excipient (pharmacologically inactive substance)

What is it?

FD&C Green No. 3, also known as Fast Green FCF is a food, drug and cosmetic synthetic dye with an aquamarine color. It is listed as a safe additive by the FDA. However, the European Union does not allow the use of Fast Green. This substance has been found to have tumorigenic effects in experimental animals, as well as mutagenic effects in both experimental animals and humans.[1] It's use in coloring foods, pharmaceuticals and cosmetics may be of quantities allowable by the U.S. FDA.

List of medications using FD&C Green No. 3


  1. Electronic Code of Federal Registers. Title 21: Food and Drugs. Part 74. Listing of color additives subject to certification. Subpart B. Drugs. Accessed online October 19, 2011.;sid=c387334e82029536a53dde1171ba5481;rgn=div5;view=text;node=21%3A1.;idno=21;cc=ecfr#21:

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.