Drug interactions
Asenapine transdermal + Haloperidol
Severity: Moderate
Asenapine transdermal and Haloperidol: moderate interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Two antipsychotics together add to QT prolongation, sedation, orthostatic hypotension and extrapyramidal effects. Combination therapy offers little proven benefit and increases adverse effect burden.
What this interaction means in plain words
Asenapine transdermal and Haloperidol can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Why it happens
Additive dopamine antagonism, QT prolongation and CNS depression.
What to do
Avoid routine antipsychotic polypharmacy; if combined, obtain an ECG, monitor for extrapyramidal symptoms and sedation, and use the lowest effective doses.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Haloperidol
- Dofetilide + Haloperidol Contraindicated
- Dronedarone + Haloperidol Contraindicated
- Haloperidol + Ibutilide Contraindicated
- Haloperidol + Levoketoconazole Contraindicated
- Haloperidol + Panobinostat Contraindicated
- Haloperidol + Pimozide Contraindicated
Frequently asked questions
Can I take Asenapine transdermal with Haloperidol?
MediHelp rates the interaction as moderate. Asenapine transdermal and Haloperidol can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Two antipsychotics together add to QT prolongation, sedation, orthostatic hypotension and extrapyramidal effects. Combination therapy offers little proven benefit and increases adverse effect burden.
How serious is the interaction between Asenapine transdermal and Haloperidol?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid routine antipsychotic polypharmacy; if combined, obtain an ECG, monitor for extrapyramidal symptoms and sedation, and use the lowest effective doses.
What other medicines interact with Haloperidol?
MediHelp also lists interactions of Haloperidol with, for example, Dofetilide, Dronedarone, Ibutilide. The full list is on the Haloperidol page.
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