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 PDF] Glutathione S transferase catalyzed conjugation of bioactivated aflatoxin B(1) in human lung: differential cellular distribution and lack of significance of the GSTM1 genetic polymorphism. Semantic Scholar Glutathione and Lung Disease Glutathione Reporter 9 Health Benefits of Glutathione Disturbances of the Lung Glutathione System in Adult Guinea Pigs Following Neonatal Vitamin C or Cysteine Deficiency Glutathione activated near infrared II fluorescent probe for lung metastatic diagnosis and intraoperative imaging of tumor