Drug interactions
Aripiprazole + Loxapine
Severity: Moderate
Aripiprazole and Loxapine: 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
Using two antipsychotics together increases cumulative dopamine blockade, which can raise the risk of extrapyramidal symptoms, akathisia, and neuroleptic malignant syndrome. Additive sedation also occurs.
What this interaction means in plain words
Aripiprazole and Loxapine 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.
Aripiprazole belongs to Central Nervous System; Loxapine belongs to Central Nervous System.
Why it happens
Additive dopamine D2 receptor antagonism or partial agonism combined with additive sedative effects.
What to do
Avoid antipsychotic polypharmacy where possible. If combined, use the lowest effective doses and monitor for movement disorders, sedation, and fever or rigidity.
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 Loxapine
- Alfentanil + Loxapine Major
- Alprazolam + Loxapine Major
- Amisulpride + Loxapine Major
- Amoxapine + Loxapine Major
- Apomorphine + Loxapine Major
- Belladonna and opium + Loxapine Major
Other interactions of Aripiprazole
- Aripiprazole + Pimozide Contraindicated
- Aripiprazole + Thioridazine Contraindicated
- Amisulpride + Aripiprazole Major
- Aripiprazole + Arsenic trioxide Major
- Aripiprazole + Calcium / magnesium / potassium / sodium oxybates Major
- Aripiprazole + Carbamazepine Major
Frequently asked questions
Can I take Aripiprazole with Loxapine?
MediHelp rates the interaction as moderate. Aripiprazole and Loxapine 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. Using two antipsychotics together increases cumulative dopamine blockade, which can raise the risk of extrapyramidal symptoms, akathisia, and neuroleptic malignant syndrome. Additive sedation also occurs.
How serious is the interaction between Aripiprazole and Loxapine?
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 antipsychotic polypharmacy where possible. If combined, use the lowest effective doses and monitor for movement disorders, sedation, and fever or rigidity.
What other medicines interact with Loxapine?
MediHelp also lists interactions of Loxapine with, for example, Alfentanil, Alprazolam, Amisulpride. The full list is on the Loxapine page.
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