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': 'which of these is a Fda approved indication for use of modafinil as an adjunct? \nSelect and explain. \nA. Major depression, B. Narcolepsy, C. obstructive sleep apnea, D. shift work disorder', 'role': 'user'}, {'content': 'Answer: C \nExplanation: FDA has approved modafinil as an adjunctive treatment for obstructive sleep apnea. Remember, Continuous positive airway pressure (CPAP) is the treatment of choice for this disorder.\nModafinil is approved only as adjunctive treatment.', 'role': 'assistant'}]