Glycine & Reviews Thorne Glutathione Amino Acids: Why Supplements May Not Work 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, Three amino acids walk into a bar.the adventures of supporting glutathione synthesis in fatty liver disease using serine & nicotinamide riboside Dr. Kara Fitzgerald The Importance of Glutathione in Health and Healing Dr. Todd Maderis