Glutathione Deficiency PrimeGSH Importance of Glutathione Immunocal Malaysia Understanding Glutathione Deficiency Invigor Medical Ever considered Glutathione therapy? Glutathione is a naturally occurring antioxidant that plays an essential role in protecting the body from oxidative stress. It is produced primarily in the liver 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: Master Antioxidant, Reducing Oxidative Stress, and Detoxification