Thanks for the suggestion. Unfortunately, even 3% causes me all kinds of bad breathing. I'm surprised and glad that so much is coming up with.9%. I do have some shortness of breath and discomfort after using it but it's bearable.

My picky lungs do not like anything nebulized. They didn't like Arikayce or nebulized levalbuteriol. They don't like wind, perfume, smoke, auto emissions, hot weather, cold weather and a whole bunch of other triggers. My lungs are very difficult!