Merbromin (marketed as Mercurochrome, Merbromine, Sodium mercurescein, Asceptichrome, Supercrome, Brocasept and Cinfacromin) is a topical antiseptic used for minor cuts and scrapes. Merbromin is an organomercuric disodium salt compound and a fluorescein. It is readily available in most countries but, because of its mercury content, it is no longer sold in France, Germany, or the United States.
Merbromin's best-known use is as a topical antiseptic to treat minor wounds, burns, and scratches. It is also used in the antisepsis of the umbilical cord and the antisepsis of wound of difficult scar formation, like neuropathic ulcers, and diabetic foot sores. When applied on a wound, it stains the skin a distinctive carmine red.
The U.S. Food and Drug Administration in 1998 classified merbromin as "not Generally Recognized as Safe" together with a multitude of other active compounds, based on the absence of interest on the part of pharmaceutical companies in funding new studies or updated supporting information, due to the high costs of said studies in comparison to sales. In no case was it due to the product being toxic or risky for the patient.