Hello, thanks for using health care magic From the description you have given it is likely that your child has an upper respiratory tract infection. Upper respiratory tract infection are most often cause by viruses and present with mild to moderate increase in temperature, serous or clear nasal discharges, and other respiratory problems such as respiratory distress. However, bacteria can superimposed on the viral upper respiratory tract infection; in which case, the nasal discharge is purulent or yellow, temperature is high etc. This situation requires antibiotics. Crocin is acetaminophen which is good in bringing down the temperature but does not treat the underlying problem. Asthalin is salbutamol which requires medical prescription, alerid and t-minic are antiallergic drugs and ambrolite is a mucolytic not important in a dry cough like that of your son. So, i will advise you let a doctor examine your child thoroughly and get laboratory exams and appropriate treatment given. Hope this helps you. Dr Achuo