It’s interesting how many of us tolerate different drugs.
After using the Podhaler for less than a week, I gave it up. It appeared to cause a persistent dry cough and breathing difficulties.
Colistin appeared to cause a low grade fever in addition to the same persistent dry cough and breathing difficulties as the Podhaler. I gave that up after using it for three 28 day cycles.
Cayston, which I have been using for successfully for over six years, is the only inhaled antibiotic I seem to tolerate easily. I tried the Colistin and Podhaler just to have something else to use during the Cayston off months, but as I said neither worked out.
I had used TOBI for about three years after first being diagnosed with CF. After a few rounds of IV Tobramycin, it and the TOBI affected my hearing and I have not used either in quite a while. Fortunately, the CF center I was attending at the time was able to get me into the Cayston (or Aztreonam Lysine as it was called at the time) Extended Access Program. I was supplied with it for about three years before it got FDA approval.
Thank G-d the Cayston appears to work fine for me. If it didn’t, I would go back and try Podhaler, Colistin, or maybe the Bethkis/TOBI again. Instead of using it for the full 28 days, I would try it for two weeks. (I have spoken to my CF doctor about this.) I might also try reducing the dosage. I was advised not to reduce the daily frequency.
Many of us are fortunate to have some choices. I know more inhaled antibiotics are in development.