This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pharmacology, Subject name: Pharmacology
[{'content': 'All the following drugs act by blocking AMPA receptors of glutamate except \nSelect and explain. \nA. Felbamate, B. Perampanel, C. Phenobarbitone, D. Topiramate', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Felbamate acts on NMDA receptors of glutamate. Perampanil is a new class of drug acting on AMPA receptors,Phenobarbitone is also known to block these receptors. Ref: HL Sharma 3rd ed.Pg 527.', 'role': 'assistant'}]