<prompt> Which of the following is NOT a Calcium channel blockerVerapamilPirenzepineFelodipineNitrendipine  <response>: Ans. is b i.e., Pirenzepine Pirenzepine is a selective M1 AntagonistCalcium channel blockers.Phenyl alkylamine - VerapamilBenzodiazepine -DiltiazemDihydropyridines - Nifedipine, Felodipine, Amlodipine, Nitrendipine, Nimodipine, Lacidipine More questions on calcium channel blocker -Only voltage sensitive L type channel are blocked by calcium channel blockers.CCBs causing ankle edema - NifedipineCCBs causing Reflex tachycardia - Nifedipine CI in anginaCCBs having most depressant affect on heart - Verapamil 