L glutathione VS Glutamine: Which Is Better to Take? EffePharm 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 Glutathione Benefits and Risks JW Nutritional, LLC Glutamine Metabolism Springer Nature Link The role of intravenous glutamine administration : Emergency and Critical Care Medicine Glutamine supplementation reverses manganese neurotoxicity by eliciting the mitochondrial unfolded protein response ScienceDirect