Used as a non-opioid antitussive agent to suppress coughing, particularly in cases of dry or non-productive cough. It works by acting centrally on the cough center in the medulla oblongata to reduce the urge to cough. Due to its lack of narcotic effects, it does not cause respiratory depression or dependence, making it a favorable option for long-term cough management. Commonly found in over-the-counter and prescription cough medications, especially in formulations intended for adults and older children.