Why Glutathione is Called the 'Master Antioxidant' and What It Means f Setu Nutrition Glutathione is often called the body's master antioxidant, and for good reason. Every day, your body faces oxidative stress from pollution, poor sleep, alcohol, UV exposure, and even intense exercise. Over time, Glutathione's role as a master antioxidant in plant defense system. Download Scientific Diagram Glutathione Injections Hydrogen Water vs. Glutathione (GSH): Comparing Health Benefits Evolved H2O