Glutathione Vs Glutamine Which is Better for Your Skin Health? 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 OR Free Full Text Glutamine transporters as effective targets in digestive system malignant tumor treatment