Hi, my son is 2.7 yrs and started going school since 2 months. Before going to school, he was very healthy, I didn't even remember him suffering with cold. But now he catches cough n cold often. My Doctors medicine doesn't seem to work. Chest congestion is still there, though he is under medication for one week. he is suffering very much today without eating or sleeping. Really worried plz help. Any other alternative to reduce chest congestion.?