Frontiers Glutathione: A Samsonian life sustaining small molecule that protects against oxidative stress, ageing and damaging inflammation 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, The functions of glycine. Amino acid glycine chemical molecular formula. Vector illustration on isolated background Stock Vector Image & Art Alamy The Importance of Glutathione in Health and Healing Dr. Todd Maderis NAC and Glycine: The Efficient Way to Raise Glutathione Glutathione Amino Acids: Why Supplements May Not Work