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), 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 The Power of Glutathione: The Master Antioxidant Your Body Needs Calibrate Hydration L Glutathione Master Antioxidant for Detox, Cellular Defense & Skin Solensis