<prompt> Which of the following drug is not a blocker of L-type of calcium channels?DilitiazemAmlodipineEthosuximideVerapamil  <response>: L type Ca2 channels present in CVS T type Ca2 channels present in CNS Ethosuximide is a blocker of T type of calcium channels and is used for treatment of absence seizures. 3 groups of L-type CCB: Phenylalkylamines Benzothiazepines Dihydropyridines Verapamil Diltiazem Nifedipine Nicardipine Nimodipine Amlodipine Nimodipine: Cerebro-selective CCB Clinidipine: Blocks both L- Ca2 and T- Ca2. 