I've been on the three antibiotics for 13 months. I have no idea if they are helping, or not. Recently changed lung doctor, but have had only the first visit; second one end of this month. I am very anxious to get his perspective on this disease. I'm really hoping to get off the meds. For me---there are 3-4 negative side effects from the Ethambutol. I DO plan to stop taking it. My first doctor did nothing but put me on the meds, after a bronchoscopy and CT scan. I do have nodules in my lungs. I am very grateful for this site, where we can discuss our feelings and fears. It helps.