Glutathione antioxidant system. a Schematics for the reduction of Download Scientific Diagram Glutathione is nicknamed the master antioxidant because it is the most abundant, body produced (endogenous) antioxidant found in every cell, essential for neutralizing free radicals, recycling other antioxidants (like Vitamin C and E), Your body has a built in defense system most people never think about until fatigue, inflammation, or skin changes start showing up. It is often described as the body's master antioxidant. It plays The diverse roles of glutathione associated cell resistance against hypericin photodynamic therapy ScienceDirect