sir my son is taking l montus from last 4-6 years, even one day without this medicine, he gets breathing problem immediately. We all are quite anxious when the day will come he will be releived from taking this medicine. As per doctor, after 10-12yrs of age this problem will go off, but now he has crossd 12 yrs of age also, but same problem still there, He is now feeling headachem,itching on throat also. Pl guide