Can A Toddler Safely Take Mucolite And Kidpred Together For A Persistent Cough?

Hi Doctor, My chikd is 20 month old, he was having cough and cold for 1 month. Giving Allegra cured running nose. But cough is still there. From last 7 days doctor told to give Mucolite and nubelizer for cough. When still it is not cured doctor added kidpred syrup. Can we give mucolite and kidpred both?