Yes, I use my inhaler for chronic asthma/hyperreactive airways/shortness of breath. My doc recommended it for me permanently, and I am not getting side effects, so I will keep using it. I can tell you it took about 2 weeks for it to get to a therapeutic level for me, so it wouldn't be good to stop and start based on how I feel.
If your asthma is recent onset, your doc may have a different answer for you.
Sue