Hi welcome I recently just joined myself and was diagnosed with Mac myself . my pulmonologist has me on arickayce since dec 16th and I'm just getting to know the medication and its effects of it all. how did they find Mac on your lung? I did 2 lung biopsies one this past June and a bronchoscopy in aug. I was sick back last December with a bad cold which turned into pneumonia which I did not not know I had Mac yet which Meds are you on again for Mac?