Clinical Glutathione Glutathione: Antioxidant Properties Dedicated to Nanotechnologies Happy Week 6! Check out the graphic to learn more about Glutathione Synthetase Deficiency. Glutathione in Whole Blood HPLC 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, Total