Anti-asthmatic Agent

**Semantic type:** Chemical Viewed Functionally

**Definition:** Classified as bronchodilators (beta-adrenoreceptor agonists, xanthines, muscarinic-receptor antagonists) and anti-inflammatory agents (glucocorticoids, cromolyn), natural or synthetic Anti-asthmatic Agents relieve asthma (a recurrent airway obstruction) in multiple ways and at various sites, by reducing bronchial spasm, dyspnea, allergic reaction, local inflammation, and pain. Other agents, such as anti-histamine and antibiotics, may also be used in asthma. (NCI04)