Free Form. Antioxidant & Detoxification Support. Gluten Wheat & Dairy Free. Suitable for Vegetarians. L-Glutathione 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. This formulation provides Reduced Free Form L-Glutathione to promote optimal absorption and assimilation.