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 The role of intravenous glutamine administration : Emergency and Critical Care Medicine Comorbidity associated glutamine deficiency is a predisposition to severe COVID 19 Cell Death & Differentiation Amino Acid Supplements I: Glutamine Glutamine supplementation reverses manganese neurotoxicity by eliciting the mitochondrial unfolded protein response ScienceDirect