Glutathione Amino Acids: Why Supplements May Not Work Glutamine Metabolism Springer Nature Link How to Use L Glutamine for Immunity and Muscle Performance Clinikally Glutathione is an antioxidant that's made up of the three amino acids glutamine, glycine, and cysteineall of which are rich in the mineral sulfur. The main functions of glutathione are to fend off L Glutamine vs L Glutathione: What's the Difference? H PROOF 5 Route of synthesis of glutathione (GSH) involving three amino acids Download Scientific Diagram