Pancreatitis associated with atypical antipsychotics: from the Food and Drug Administration's MedWatch surveillance system and published reports.

Study Objective: To investigate the relative numbers and clinical characteristics of pancreatitis in patients treated with the atypical antipsychotic agents, clozapine, olanzapine, and risperidone, versus the conventional neuroleptic, haloperidol.

Design: Pharmacovigilance study of pooled, spontaneously reported adverse events.

Setting: Government-affiliated drug evaluation center.