Glycine is sold across the wellness internet as a sleep aid, a collagen builder, and an anti aging amino acid for glutathione synthesis. The sleep evidence is real. The other two are mechanism plausible Dietary glycine supplementation enhances syntheses of creatine and glutathione by tissues of hybrid striped bass (Morone saxatilis Morone chrysops ) fed soybean meal based diets Journal of Animal Science and The structure of glutathione, glutamylcysteinyl glycine. The Download Scientific Diagram 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 The