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 Injections: Benefits, How It Works & Telehealth Modern Endocrine Multiple nutritional factors and thyroid disease, with particular reference to autoimmune thyroid disease Proceedings of the Nutrition Society Cambridge Core Glutathione Treatments 101: Part 1 The Mother of All Antioxidants BioDesign Wellness Center