Antipsychotic Combination Therapy Guidelines

Introduction to Antipsychotic Therapy

• The American Academy of Pediatrics guidelines list haloperidol and olanzapine as separate treatment options for agitation, never recommending their combination 1

Cardiac Risk Assessment

• When choosing between haloperidol and olanzapine for acute agitation, assess cardiac risk by checking for QTc prolongation, recent MI, or concurrent QT-prolonging medications—if present, avoid both agents but particularly be cautious 2, 3

Extrapyramidal Symptom Risk Evaluation

• If a patient has Parkinson's disease, dementia with Lewy bodies, or prior dystonic reactions, choose olanzapine over haloperidol 1, 2

Metabolic Factor Consideration

• Olanzapine is weight-neutral compared to other atypicals but still has metabolic effects with long-term use 4