Drug interactions
Haloperidol + Loxapine inhaled
Severity: Moderate
Haloperidol and Loxapine inhaled: 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
Both are dopamine antagonists, so combined use adds to the risk of extrapyramidal symptoms, sedation, QT prolongation and neuroleptic malignant syndrome. Inhaled loxapine can also cause bronchospasm.
What this interaction means in plain words
Haloperidol and Loxapine inhaled 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 D2 receptor blockade and central nervous system depression.
What to do
Avoid duplicating antipsychotic therapy where possible, and monitor for sedation, rigidity, dystonia and ECG changes. Allow adequate time between doses and assess respiratory status after inhalation.
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 Haloperidol with Loxapine inhaled?
MediHelp rates the interaction as moderate. Haloperidol and Loxapine inhaled 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. Both are dopamine antagonists, so combined use adds to the risk of extrapyramidal symptoms, sedation, QT prolongation and neuroleptic malignant syndrome. Inhaled loxapine can also cause bronchospasm.
How serious is the interaction between Haloperidol and Loxapine inhaled?
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 duplicating antipsychotic therapy where possible, and monitor for sedation, rigidity, dystonia and ECG changes. Allow adequate time between doses and assess respiratory status after inhalation.
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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