Glutathione an overview ScienceDirect Topics 7 Powerful Natural Sources of Glutathione for Optimal Health Glutathione is essential for your immune system. Check out all the benefits in the caption below! Detoxification: Glutathione is present in the liver and plays a major role in detoxification. Glutathione Best Glutathione Supplement 4 Recommendations in 2026 Glutathione is the body's primary internal antioxidant, made using the amino acid cysteine, and it helps protect cells from oxidative stress. Beyond detoxification, research shows glutathione is involved in thyroid hormone metabolism, 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 (