Clozapine is most appropriately used for which scenario?

• A. Treatment-resistant schizophrenia
• B. First-line therapy for all schizophrenia
• C. Acute mania
• D. Anxiety disorders

Answer: (A)

Clozapine is used when schizophrenia does not respond to other antipsychotics, making it the treatment of choice for treatment-resistant schizophrenia. In these cases, it can provide meaningful symptom relief and has a unique ability to reduce suicidality. However, its use is limited by a significant risk of agranulocytosis and other serious adverse effects, so it requires strict blood monitoring through a Clozapine REMS program with regular white blood cell and absolute neutrophil count checks (typically weekly at first, then biweekly, then monthly). This safety burden explains why it is not a first-line therapy for schizophrenia. It is not indicated for acute mania or for anxiety disorders, where other medications and approaches are preferred. So, the best scenario for clozapine is treatment-resistant schizophrenia after other antipsychotics have failed, with ongoing monitoring to manage safety risks.