Excipient (pharmacologically inactive substance)
What is it?
FDA regulates color additives used in foods, drugs, cosmetics, and medical devices. Ferric (iron) oxides, also known as ferrosoferric oxides, are inorganic pigments used in the pharmaceutical industry as coating pigments. Iron oxides are also commonly used in the cosmetics industry. Iron oxides for use in pharmaceutical manufacturing may also be synthetic.[1][2]