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 (GSH), a powerful intracellular antioxidant, plays a Download Scientific Diagram Glutathione is the body's primary internal antioxidant, made using the amino acid cysteine, and it helps protect cells from oxidative stress. Beyond detoxification, research shows glutathione is involved in thyroid hormone metabolism, What Is Glutathione? 8 Health Benefits That Might Surprise You Group B. Mean glutathione reductase activity ( IU.g Hb 1. min 1 at Download Scientific Diagram