Glutamine vs Glutathione Whats The Difference & Which Is Best For Gut Health? Glutamine: Metabolism and Immune Function, Supplementation and Clinical Translation 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 supplementation reverses manganese neurotoxicity by eliciting the mitochondrial unfolded protein response ScienceDirect The Essential Guide to Glutamine in Cell Culture Life in the Lab