The Peak Power of Glutathione: Your Body's Ultimate Ally Peak Medical Glutathione is a powerful antioxidant naturally present in your body. It plays a role in reducing oxidative stress and is often marketed for skin brightening. But here's the truth Topical ( Glutathione: Master Antioxidant, Reducing Oxidative Stress, and Detoxification 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: The Master Antioxidant Your Body Needs TRT Nation