Glutathione and NAC Reduce the Severity of COVID 19 All About NAC (N acetylcysteine): What it is and what benefits it has Zenement The Central Nervous System Modulatory Activities of N Acetylcysteine: A Synthesis of Two Decades of Evidence 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