I have a 18 month old son who has a real bad caugh and is not yet old enough to receive a prescription
Give four tablespoon of fresh grape juice mixed with 1/4 teaspoon of honey. It acts as expectorant and is advised for cough relief.
And remember: Coughing isn’t all bad. It helps clear mucus from airway. If your child is otherwise healthy, there’s usually no reason to suppress a cough.