I have been to the er many many times for short of breath. after 5 years on the same meds does your body get use to them. do dr usually try other options. when I check most say for treating asthma. which I do not have. Iknow COPD gets worse as time goes on. my dr always says I am fine and keeps me on the same meds. my first dr moved out of state thats why I now have Another dr.