This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
[{'content': 'Efficacy of salmeterol is increased if it is given along with - \nSelect and explain. \nA. Theophylline, B. Coicosteroid, C. Ipratropium, D. Sodium cromoglycate', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Coicosteroid o Concurrent use of inhaled salmeterol with inhaled glucocoicoid produces effects equivalent to double dose of the coicoid alone.", 'role': 'assistant'}]