<prompt> Agranulocytosis is the fatal complication of which drug?RisperidoneClomipramineOlanzapineClozapine  <response>: Ans. D. ClozapineSerious se of Clozapine: Seizures: 5-10 risk: Dose related, increased risk at dosages 600mg Agranulocytosis: risk-0.73 during 1st year, 0.07 in 2nd year Myocarditis: incidence 2.8100,000 pt-yrs Increased Mortality in Elderly Patients with Dementia Severe Cardiovascular and Respiratory EventsOther common side effects: Sialorrhea, Weight gain, Constipation, Diabetes mellitus 