Glutathione: pharmacological aspects and implications for clinical use Geriatric Care What are the three amino acids that make up glutathione? The Anti Aging and Longevity Benefits of Glycine 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