My 3.5 year old son has cold little cough and fever. The cold and cough is from last 3 months. The fever comes every 15-20 days. Every time we have to give antibiotics for the fever/ fever goes but cold and cough is still there. He has swollen tonsils. He is currently on montair tablets. This time we are not able to decide if this is wet or dry cough. Can we give medicines for both? Duolin nebulisation and viscodyne D syrup together?