Sir/madam my son (age 6 months) is suffering cold and cough with out fever. Evening time cough become heavy and he can't take breath properly because of cold. Using ontrvine nasal drops, nebulizer with asthalin liquid. And also medicine we are giving oral drops cetrizine ,levosalbutamol and ambroxol and cefdoxime antibiotic. Please tell other medicines to cure fast. He is suffering from 3 days .please help me.