This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pharmacotherapy in psychiatry, Subject name: Anatomy
antipsychotic drug approved for the managemnt of parkinsonian patients 
Select and explain. 
A. clozapine, B. olanzapine, C. haloperidol, D. risperidone
A: clozapine
Answer: A: clozapine 
Explanation: CLOZAPINE * Impoance * First SGA * TREATMENT FOR TREATMENT RESISTANT SCHIZOPHRENIA * TOC for TD * Anti suicidal * Psychosis in parkinsonian patients * Side effects * Agranulocytosis * Myocarditis * Seizure * Constipation * Weight gain * Metabolic syndrome Sialorrhea ref. kaplon and sadock, synopsis of psychiatry, 11 th edition, pg no. 935