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 Liposomal Spermidine 30 Servings Purovitalis N Acetyl Cysteine Benefits: Should You Be Taking an NAC Supplement? AMMD Why NAC (N Acetylcysteine) in an IV? Reduces oxidative stress NAC helps replenish glutathione, one of your body's most powerful antioxidants. Supports detoxification Assists in clearing toxins NAC) N Acetylcysteine Supplement Nature's Fusions