Glutathione synthetase deficiency MedLink Neurology Why have Glutathione injections? Glutathione is the mother of all antioxidants. Made up of three amino acids glutamine, glycine and cysteine, it is naturally produced by the liver and has a Glutathione is such a critical soldier in our line of defense that our bodies make it themselves. We even have mechanisms that recycle and reuse it. But what happens when our toxic GlyNAC Supplementation Improves Glutathione Deficiency, Oxidative Stress, Mitochondrial Dysfunction, Inflammation, Aging Hallmarks, Metabolic Defects, Muscle Strength, Cognitive Decline, and Body Composition: Implications for Healthy Aging ScienceDirect