Glutathione is often called the body's master antioxidant, but most people don't really understand what it does. It plays a central role in protecting your cells from damage, supporting detox pathways, and Glutathione Peptide Antioxidant & Cellular Research glutathione Analytical and structural investigation via infrared spectroscopy and density functional methods of cuprous complexes of the antioxidant tripeptide glutathione (GSH). Synthesis and characterization of a novel CuI GSH compound ScienceDirect