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': "Wigabatrin' a new antiepileptic agent acts by ? \nSelect and explain. \nA. GABA- antagonis, B. GABA - agonism, C. NMDA antagonism, D. Carbonic anhydrase inhibition", 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans is 'b' i.e., GABA-agonism o Vigabatrin (y-vinyl GABA) is an inhibitor of GABA transaminase, the enzyme which degrades GABA. o Anticonvulsant action is due to increase synaptic GABA concentration.", 'role': 'assistant'}]