@anniepie, Hi Annie. I am trying my best to stay well! I do not understand why your health care system wouldn't do a susceptibility test on all three of the drugs. I do not know so much that Dr. Leventhal was courageous for prescribing me the way he did; as the ATS lobby doesn't affect him. He worked for Mayo Clinic with is a non-profit research institution. Which means they try different things to treat diseases in order to discover better ways to combat them. He told me when I first saw him that we could try this method and if it did not work, then we could go to the standard way of using the Big 3. I think that some strains of mac are more serious and my regimen probably wouldn't get rid of it. Dr. Leventhal retired this past August, so I am curious about meeting his replacement this summer. He told me that he had been grooming her with his thought processes on how to treat NTM (mac). I read some of her publications and she seems to be very passionate about this particular disease. Are you free of the smoke from the wildfires in your country? I hope so!