Used as a non-opioid antitussive agent to suppress dry, non-productive cough. It acts centrally on the cough reflex in the medulla oblongata, reducing the urge to cough without significant sedative or respiratory depressant effects. Commonly found in cough syrups and tablets for symptomatic relief in respiratory conditions such as bronchitis, pharyngitis, and post-infectious cough. It is preferred in cases where mucus clearance is important, as it does not inhibit expectoration.