Glycine and N acetylcysteine (NAC) are amino acidbased nutrients that serve as precursors for glutathione, one of the body's most important intracellular antioxidants. Glutathione plays a central role in reducing oxidative stress, supporting Amino Acid Biosynthesis: Overview and Insights The Medical Biochemistry Page Crystal structures of glutathione and inhibitor bound human GGT1: critical interactions within the cysteinylglycine binding site Journal of Biological Chemistry Glycine Metabolism and Its Alterations in Obesity and Metabolic Diseases The Anti Aging and Longevity Benefits of Glycine Your Guide to GlyNAC Supplementation: Expert Tips xLongevity