Dextromethorphan, often taken as a cough suppressant, is now approved to treat major depressive disorder (MDD) in combination with bupropion. A clinical trial found that dextromethorphan/bupropion ...

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 ...