Engineered Cellular Resistance: The Science of Momentous Longevity NAC is a great supplement. It's awesome stuff to support healthy lungs. NAC is a known mucolytic. That is a fancy term meaning breaking up mucus. Now, research does show that NAC Glutathione vs NAC for Liver Repair: What Clinical Research Really Sho N Acetyl Cysteine (NAC) is a powerful antioxidant that supports the body's natural detoxification and anti inflammatory pathways. It works primarily by increasing glutathione, one of the body's most important protective molecules against oxidative