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Synthetic Ferric Oxide Yellow

Medically reviewed by Last updated on Dec 15, 2023.

Excipient (pharmacologically inactive substance)

What is it?

FDA regulates color additives used in foods, drugs, cosmetics, and medical devices. Synthetic ferric oxide yellow is a yellow pigment synthesized and used in the pharmaceutical industry as a coating pigment. It is also known as yellow iron oxide [Fe2O3]. It exists as an amorphous yellow powder, and is primarily used in the cosmetics industry.[1] [2]


  1. Dave RH. Overview of pharmaceutical excipients used in tablets and capsules. Drug Topics (online). Advanstar. 10/24/2008 Accessed 08/19/2011
  2. U.S. Food and Drug Administration. Color Additives: FDA's Regulatory Process and Historical Perspectives. Accessed 10/20/2011.

Further information

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