It shouldn't be hard to treat the cough like your son has. what kind of antibiotics has he received? You might consider a more experienced doctor to treat your son.
respected member, he is now treated witH KEFLEX /cephalexin/ bp 250 mg per 5 ml ,5ml dose tw times a day, and ACEFYL /acefylline piperazine/ 5ml dose three times a day. and from one year i am giving him these tablets daily named AEROKAST /montelukast sodium/ 5mg daily and ZATOFEN 5MG TABLET DAILY /KETOTIFEN/ asthma prophylactic, he was treated with steriod injection named SOLU MEDROL,ON THE BEGNING OF HIS DISEASE
I HAD CONSULTED ON OF THE MOST EXPRIENCED CHILD SPECIALIST IN MY CITY LAHORE ,FROM LEADING HOSPITALS