Four years ago I was diagnosed with Pulmonary Fibrosis. One 120,000 units (enteric-coated) serrapeptase (can do this three times daily - must be taken on an empty stomach) and one or two - 600 NAC (taken with vitamin C) does wonders for me. Haven't had an MRI or CT-scan since the initial one. My pulmonary doctor wanted me to have a lung biopsy (to try to figure out what caused it), but that didn't appeal to me. All the scars from working in the deli (friers) have disappeared though, as well as ALL the other scars that I had collected throughout my life-time. Serrapeptase eats away the scar tissue (as well as blockages in arteries), and the NAC thins out any mucus. I'm still here, so something must be working.