Since 1947 Free Form Antioxidant & Detoxification support Gluten, Wheat & Dairy Free Suitable for Vegetarians Kosher Parve Dietary SupplementGlutathione is a sulfur-containing peptide made up of three amino acids: Glutamic acid, Cysteine and Glycine. It is an important water-soluble antioxidant that plays a role in protecting the body from free radical oxidative stress, which can lead to premature aging of cells. It also acts in amino acid transport and detoxification pathways.