NOW Glutathione 500 mg 30 Veg Capsules is a dietary supplement designed to support detoxification and cellular health. Glutathione is a small peptide composed of three amino acids—cysteine, glutamic acid, and glycine—produced by every cell in the body, with especially high levels in the liver. It plays a critical role in healthy immune function, proper detoxification, and healthy aging by directly neutralizing free radicals and maintaining the activity of vitamins C and E. This formula also includes milk thistle extract and alpha-lipoic acid as complementary ingredients to further support liver health and antioxidant protection. The product is non-GMO, vegetarian/vegan, kosher, and manufactured under GMP quality assurance by a family-owned company since 1968.