The Benefits of Glutathione on Liver and Cholesterol Health Blood glutathione. Effect of red wine consumption on blood GSH Download Scientific Diagram Making bloodwork work: the impact of sample collection, processing, and storage on plasma glutathione measurement, and implications for translation Translational Psychiatry 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,