Glutathione can be found in plants and animals. It is a peptide made up of three amino acids: Glutamic acid, Cysteine and Glycine. Glutathione is an important water-soluble antioxidant that plays a role in supporting muscles from free radicals. L-Glutathione is a biologically active, naturally occurring tripeptide composed of L-Cysteine, L-Glutamic acid and Glycine. Maximised L-Glutathionie (Reduced) 250 mg Vegetable Capsules provides a high potency source of L-Glutathione.