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 Amazon.com: Powerful Lung Detox & Cleanse Mullein, Chlorophyll, Zinc Respiratory Support with Glutathione for Smokers & Vapors Easy Breathing by NDCO : Health & Household Glutathione is a potent antioxidant, helps get rid of free radicals and is a detoxifier for the liver lungs kidney and skin One of my favorite nutrients @doctorheathernd @theacchilliwack @theacabbotsford Great Nebulizer Glutathione Lungs & Respiratory Lemon Water Wellness Clinic & General Store