Glutathione-SRThorne's Glutathione is NSF Certified for Sport. It occurs naturally in cells and is a cofactor in dozens of enzymatic reactions involved in detoxification.* As an antioxidant, glutathione directly quenches several reactive oxygen species (free radicals).* The bodys benefits from maintaining a normal level of glutathione include support for liver function, pulmonary function, immune function, bowel health, carbohydrate metabolism, cardiovascular