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 Is NAC Better Than Glutathione? A Comprehensive Look at Two Powerful Antioxidants Cymbiotika CYMBIOTIKA The Effect of Glycine and N Acetylcysteine on Oxidative Stress in the Spinal Cord and Skeletal Muscle After Spinal Cord Injury Inflammation Springer Nature Link NAC Antioxidant & Detox Support Allergy Research Group Existing and potential therapeutic uses for N acetylcysteine: The need for conversion to intracellular glutathione for antioxidant benefits ScienceDirect