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
Which antiepileptic drug does not act inhibition of sodium channels? 
Select and explain. 
A. Vigabatrin, B. Carbamazepine, C. Lamotrigine, D. Pheriytoin
A: Vigabatrin
Answer: A: Vigabatrin 
Explanation: It is an inhibitor of GABAtransaminase, the enzyme which degrades GABA. Anticonvulsant action may be due to increase in synaptic GABA concentration Ref: KD TRIPATHI 8thh ed.