My five months old was having cough only in the morning for couple of days. I went to a general physician and he prescribed Levolin for 5 days and Zn20 for Ten days 2ml. though her chest was clear. Her cough has gotten away but she has horse throat now, also her nose are not blocked but still I can hear her nose making noises. what should I do? She tends to have blocked nose too often Is the medication side effects?