Disturbances of the Lung Glutathione System in Adult Guinea Pigs Following Neonatal Vitamin C or Cysteine Deficiency Amazon.com: Bundle of USDA Organic Mullein Drops for Lungs with Marshmallow Root Extract & Plantain Leaf for Respiratory Lung Health and NAC N Acetyl Cysteine 600mg Glutathione Precursor for Liver Cleanse Detox : Frontiers Glutathione: A Samsonian life sustaining small molecule that protects against oxidative stress, ageing and damaging inflammation Snow Caps or MET Tathione? : r ThisorThatPH 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 Nutrition, Lifestyle, and Environmental Factors in Lung Homeostasis and Respiratory Health