<prompt> Drug causing agranulocytosis -PimozideClozapineRisperidoneOlanzapine  <response>: Ans. is b i.e., Clozapine o Agranulocytosis is a known side effect of clozapineBecause of the risk of agranulocytosis, patients, recieving clozapine must have weekly blood counts for the first 6 months and every 3 weeks thereafter Side effects of clozapineo Agranulocytosiso Unstable BP tachycardiao worsening of diabeteso Setsureso Urinary incontinenceo Hypersalivation sialorrhoeao Weight gaino Sedation 