Sue, I am intrigued about your comment that NAC-600 has helped you thin the mucus. I have been diagnosed with NSIP with fibrosis & Bronchiectasis. I currently do the usual airway clearance with albuterol, Pulmozyme, followed by7% saline. Twice a day. I also do mucinex 600 in morning. I’ve asked both of my Pulmonologists if okay to try NAC-600, and they said yes. What changes did you notice in your mucus and how long after you started taking it did you notice the difference. I’m also gonna get the opinion from my Pharmacist because I’m on so many other medications. Thank you for you input, and have a great holiday.