Hi my son is 7 months 26 dys old ...he was having noisy breathing and mild cough last week he was prescribed with Ambrodil s syrup and sinarest s nasal drops ....afta 6 dys of putting medicine ....He noisy breathing has not come to control ...he doesn't have cough or fever or running nose ...just noisy breathing from which my son is not able to sleep peacefully ....kindly suggest what should be the next step to be taken