If it's advair, they have a program to get it for a $30 copay or free without insurance. Arnuity has a program for $10 copay. You can download the coupons onto your phone or print it out. (My doc gave me the arnuity coupon, so not sure if it's online). It lasts for a year, so you only have to give it to the pharmacy once to put it in the system. If you use something else, check their website for patient assistance. 

I know you shouldn't have to do that, because insurance should actually cover the things you need to breathe. Just thought it might help. Asthma is a bitch.