I have Hypersensitivy Pneumonitis, a formof ILD, Ofev was prescribed for that in the hope it would slow the progression of the disease. My understanding is it works in 40 to 50% of people with ILD. I have stopped taking it because now I am on the transplant list. It can wreak havoc with your stomach and cause Irritable Bowel Syndrome in a small segment of users. I was having occasional issues with it so was told to stop it now that I'm active for transplant.