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 Glutathione, NAC & Vitamin C 30 Veg caps Glutathione, NAC & Vitamin C N acetylcysteine (NAC): Health Benefits, Side Effects, Dosage, and More The Combined Antioxidant Effects of N Acetylcysteine, Vitamin D3, and Glutathione from the IntestinalNeuronal In Vitro Model All About NAC (N acetylcysteine): What it is and what benefits it has Zenement NAC (N acetyl cysteine) is a powerful compound that plays an important role in supporting the body's natural detoxification and antioxidant systems. One of its key functions is helping the body produce glutathione,