Definition Anti-tussive agents are medications designed to suppress or alleviate coughing. They relieve excessive or non-productive coughing associated with various respiratory conditions or respiratory tract irritation. Classification of Anti-Tussive Agents Anti-tussive agents can be classified into different categories based on their mechanisms of action: 1. Opioid-Based Anti-Tussives: Opioid-based antitussives suppress …