Used as a cough suppressant to relieve dry, hacking coughs caused by minor throat and bronchial irritation, often due to colds or inhaled irritants. It works by numbing the throat and lungs, reducing the cough reflex. Commonly prescribed for short-term relief in conditions like bronchitis or postnasal drip. Not intended for chronic coughs related to smoking, asthma, or emphysema. Typically taken orally in capsule form, it should be swallowed whole to avoid numbing of the mouth and risk of choking.