Cytochrome C is a haemoprotein occurring in the body and involved in electron and hydrogen transport in biological oxidation processes. It has been given intravenously in various hypoxic conditions. Cytochrome C is an ingredient of some eye drops used for the treatment of cataract but its actions, if any, are unclear.

Ital.: Citophase; Jpn: Cytorest. Multi-ingredient: Rus.: Oftan Catachrom (Офтан Катахром); Spain: Vitaphakol.