Glycine and Nacetylcysteine (GlyNAC) supplementation in older adults improves glutathione deficiency, oxidative stress, mitochondrial dysfunction, inflammation, insulin resistance, endothelial dysfunction, genotoxicity, muscle strength, and cognition 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 Glynac Supplement Promotes Youthful Aging & Vitality Nutrality The Effect of Glycine and N Acetylcysteine on Oxidative Stress in the Spinal Cord and Skeletal Muscle After Spinal Cord Injury Inflammation Springer Nature Link Supplementing Glycine and N Acetylcysteine (GlyNAC) in Older Adults Benefits both Health Span and Lifespan USC Longevity Institute