<prompt> Which drug is used in treatment of vertigo -CinnarizineMetoclopramideCisaprideNone  <response>: Ans. is a i.e., Cinnarizine o Vertigo is due to labyrinthine disorder and the impulse utilizes cholinergic muscarinic and HI histamic receptors similar to motion sickness.o So, the drugs used are antimuscarinic, phenothiazines phenothiazines have anticholinergic property and antihistaminics.o Cinnarizine act by inhibiting influx of Ca2 into endolymph and betahistine. a histamine analogue improve blood circulation to the inner ear - can be used in Menieres disease. 