Medically reviewed by Femi Aremu, PharmD Key Takeaways Delsym is often used for dry coughs, while Robitussin-DM can treat wet coughs and chest congestion.Both Delsym and Robitussin-DM have a cough ...

Dextromethorphan can cause side effects that range from mild to serious. More common side effects include nausea and drowsiness. If dextromethorphan side effects become difficult to tolerate, talk ...

Dextromethorphan is an over-the-counter (OTC) drug that helps relieve a dry cough from a short-term cause, such as the common cold. Dextromethorphan works in the brain by reducing the urge to cough ...