<prompt> Which of the following is not an antiepileptic agent?PhenytoinFlunarizineTopiramateCarbamazepine  <response>: Ans. is b i.e., Flunarazine o Phenytoin, Topiramate and carbamezepine are antiepileptics,o Flunarizine is a Ca2 channel blocker used for the prophylaxis of migraine.Mechanism of action of different antiepiiepticsProlongation of Na channel inactivationo Phenytoino Carbamazepineo Valproateo Lamotrigineo Topiramateo ZonisamideFacilitation of GABA mediated Cl- channel openingo Barbiturateso Benzodiazepineo Vigabatrino Valproateo Gabapentino TiagabineInhibition of T type Ca currento Ethosuximideo Trimethadioneo ValproateDecrease of excitatory neurotransmissiono Felbamale Katzung 10the 382 