Potassium channel opener ?
Ans. is 'b' i.e., Retigabine[Ref. Epilepsy and brain tumors by Herbe B. Newton, p. 17flPotassium channel openersA potassium channel opener is a type of drug which facilitates ion transmission through Potassium channels.Diazoxide vasodilator used for hypeension, smooth muscle relaxing actIVItyMinoxidil vasodilator used for hypeension, also used to treat hair lossNicorandil vasodilator used to treat anginaPinacidilRetigabine, an anticonvulsantFlupiine, analgesic with muscle relaxant and anticonvulsant propeies
Stiripentol
Retigabine
Lacosamide
Modafinil