Hi, I am suffering from a cough from a long time.. I went to the doctor , so he has done mt PFT, and said m suffering from minor ashtahma , and has fgiven me 2 Inhalers , one is Duolin and serflon..( name may b lil wrong).. after after taking the inhalers I dont feel good.. feel like ghabrahat ho rai hai.. n head becomes heavy.. pl suggest I am 25 years, 50 kg and 5 ft.