Glutathione Benefits for Gut Health Nikki Yelton RD Glutathione Metabolism and Its Implications for Health ScienceDirect What is glutathione and why must we protect patient access to it? PDF] Blood glutathione concentrations in a large scale human study. Semantic Scholar 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, 6 health benefits of glutathione