@everybreath Oh, that is an unwelcome development, Was it prescribed to you for Bronchiectasis or COPD?
And here's a VERY important question - did you tell your doctor that you quit, and why, so they can look for something else to help you?
"Silent quitting" of medications due to side effects is a big problem. Not only does the doctor not know you have abandoned the treatment, but they don't know you are experiencing this side effect. This is especially important with newer drugs, because adverse effects often only show up after some time, or when prescribed to the general population. Clinical trials are generally short term, and often restricted to people on few medications, or with few other health issues. Then the new drug gets released, doctors and their often-desperate patients think "let's try this" - and we learn how it performs in the real world. Telling the doctor, and the drug company, about your experience adds to the total body of knowledge about the medication.