Hi, My Name Is Suchitra And My Daughter Is 4yrs

hi, my name is suchitra and my daughter is 4yrs who is dignosed child asthama. she frequently suffers from cough and cold. doctor has prescribed her beudate inhaler 1puff twice a day but she still suffers a lot. please tell me if her asthma will be cured and how can i prevent her from cough.