What the FDA labels say about taking them together
Asenapine and olanzapine
Asenapine's FDA label of January 31, 2025 names olanzapine in its warnings and precautions section; olanzapine's label does not name asenapine itself but warns about its class (Atypical antipsychotics).
Check it at the source: the asenapine FDA label on DailyMed (effective January 31, 2025, Allergan, Inc.); the olanzapine FDA label on DailyMed (effective March 5, 2026, Macleods Pharmaceuticals Limited).
What does the asenapine label say about olanzapine?
Asenapine label, warnings and precautionsPatients with Dementia-Related Psychosis In placebo-controlled trials in elderly subjects with dementia, patients randomized to risperidone, aripiprazole, and olanzapine had a higher incidence of stroke and transient ischemic attack, including fatal stroke.
Source: FDA drug label (SAPHRIS), NDA022117 (Abbvie), as published by Allergan, Inc., effective January 31, 2025 (SPL set 5429f134-839f-4ffc-9944-55f51238def8), via openFDA; the full label on DailyMed
What does the olanzapine label say about asenapine?
Olanzapine's label does not name asenapine itself; it warns about its class (Atypical antipsychotics):
Olanzapine label, boxed warningAnalyses of seventeen placebo-controlled trials (modal duration of 10 weeks), largely in patients taking atypical antipsychotic drugs, revealed a risk of death in drug-treated patients of between 1.6 to 1.7 times the risk of death in placebo-treated patients.
Olanzapine label, boxed warningINCREASED MORTALITY IN ELDERLY PATIENTS WITH DEMENTIA-RELATED PSYCHOSIS Elderly patients with dementia-related psychosis treated with antipsychotic drugs are at an increased risk of death.
Source: FDA drug label (Olanzapine), Macleods Pharmaceuticals Limited, effective March 5, 2026 (SPL set 8e095987-bdea-42f2-9550-c7155cf07d30), via openFDA; the full label on DailyMed
These are the labels' own sentences. PlainMeds does not grade interactions; a pharmacist or prescriber can say what they mean for one person's medicines.
Both medicines on the record
| Asenapine | Olanzapine | |
|---|---|---|
| Labeled for | Schizophrenia, Bipolar disorder | Schizophrenia, Bipolar disorder, Depression |
| Boxed warning | Yes | Yes |
| Pharmacy cost (NADAC) | $2.63 per tablet 10 mg tablet sl | $0.147 per tablet 20 mg tablet |
| Shortage now | No current entry | No current entry |
Source: FDA NDC Directory, CMS NADAC of October 7, 2026 and the FDA Drug Shortage Database (FDA files October 8, 2026)
What next?
- Check more medicines together
- up to five at once