I am like you; my asthma doesn't bother me unless I get a cold or sick. The minute my throat feels scratchy, I know it's time to take action. This last time I tried Mucinex, but I didn't start it until after the cough started. But it helped a lot. My cough was very productive and along with my other asthma medicine, this flareup lasted less than a week. I think next time, I'll start taking it the minute I feel the drainage and the scratchy throat. But I recommend it!