NAC has direct antioxidant properties on oxidant species (e.g. OH ) Download Scientific Diagram N Acetyl Cysteine (NAC) + Glycine 800mg 60 Caps Amazon.com: 2 Pack NAC Supplement (N Acetyl Cysteine) 1,000mg Serving with Reduced Glutathione, 480 Capsules : Health & Household 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 NAC N Acetyl L Cysteine NAC vs Glutathione: Comparing Antioxidant Powerhouses for Your Health IVDrips