Notussil is a central antitussive that acts directly on the cough center in the brain and inhibits inflammatory mediators that cause coughing. Unlike codeine, it is non-narcotic and does not cause respiratory depression or dependence. It has a fast onset of action within 20-30 minutes, is as effective as codeine for treating coughs without the side effects, and is superior to Butamirate for reducing daytime and nighttime coughing.