Glutathione: Master Antioxidant, Reducing Oxidative Stress, and Detoxification What is Glutathione? What are the Benefits of Glutathione? NAC vs. Glutathione: Breaking Down the Benefits for Detox, Immunity, and More As I mention in my book, N acetyl cysteine (NAC) is not found in food sources, but in the body, it converts into cysteine. NAC acts as a precursor to glutathione, a powerful Differential effects of N acetylcysteine on retinal degeneration in two mouse models of normal tension glaucoma Cell Death & Disease