Use maxtra drops only when there is running nose. Use nasal saline drops when there is blocked  nose. The doctor must have advised you after examining the child. Many times due to two common cold or change in weather you hear respiratory sounds from the the throat. in this situations there is no any other medications needed just saline drops also it is important to make the child's environment slightly warm.

Give levolin 0.31 nebulization thrice a day Budecort o.5 once a day Steam inhalation thrice a day