L Glutamine vs L Glutathione: What's the Difference? H PROOF 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 Glutamine vs. Glutathione: Understanding the Differences For Youth Glutathione Amino Acids: Why Supplements May Not Work 5 Route of synthesis of glutathione (GSH) involving three amino acids Download Scientific Diagram