Glutathione: Master Antioxidant, Reducing Oxidative Stress, and Detoxification 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 is often called the body's master antioxidant and for good reason. It supports detoxification, protects your cells from oxidative stress, and promotes brighter skin, sharper focus, and stronger immunity. Cymbiotika's Glutathione 500 mg Plus 21st Century Vitamins 21st Century Vitamins