This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Asthma, Subject name: Pharmacology
[{'content': 'Noscapine is an: \nSelect and explain. \nA. Anti-tussive, B. Anti emetic, C. Anti dirrheal, D. Mucolytics', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) Anti-tussiveRef.: KDT 6th ed. / 215* Forceful expulsion of air from lungs due to pulmonary irritation is called coughing. It can be productive or non- productive.* Anti-tussive is a class of drug which relieves coughing by suppressing cough center. These drugs are mainly used for dry cough. Example of anti-tussives are:# Opioids: Codeine, Phalcodeine, Ethylmorphine# Non-Opioids: NOSCAPINE, Dextromethorphan* Expectorants are class of drugs that increase bronchial secretion or reduce its viscosity (mucolytics). They are mainly used in productive cough. Example of expectorants are:# Mucolytics: Bromhexeine, Ambroxol# Bronchial secretion enhancers: Guaiphenisine, sodium or potassium citrate', 'role': 'assistant'}]