This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Nervous system, Subject name: Pharmacology
[{'content': 'All are true about ramelteon except: \nSelect and explain. \nA. Agonist at MT1 and MT2 receptors, B. Is a substrate of CYP1A2, C. Has high addiction liability, D. Approved for treatment of insomnia', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ref:katzung 11/e p374 Ramelteon is non-addictive drug. Ramelteon, marketed as Rozerem among others, is a sleep agent that selectively binds to the MT1 and MT2 receptors in the suprachiasmatic nucleus (SCN), instead of binding to GABAA receptors, such as with drugs like zolpidem. Ref: KD Tripathi 8th ed.', 'role': 'assistant'}]