hi,i suffer with asthma,and i am taking seretide,and ventolin inhalers to ease the symptoms. but i am constantly coughing,and nothing (not even my inhalers) will stop it. i cough up phlem whenever i cough. i have been to the doctors about the coughing,but i done seem to get any real answers from them,as they always say that my chest is clear. this coughing has been going on for years, i used to have to take penicillin for it when i was a child. the constant coughing leaves me feeling exhausted,and i am also losing sleep due to waking up in the night coughing.