Drug interactions
Loxapine + Risperidone
Severity: Moderate
Loxapine and Risperidone: 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 given together increase the likelihood of extrapyramidal symptoms, sedation, orthostatic hypotension, and rarely neuroleptic malignant syndrome. Hyperprolactinemia may also be amplified.
What this interaction means in plain words
Loxapine and Risperidone 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.
Loxapine belongs to Central Nervous System; Risperidone belongs to Central Nervous System.
Why it happens
Additive dopamine D2 receptor blockade with additive sedative and hypotensive effects.
What to do
Avoid routine combination and use the lowest effective doses if both are needed. Monitor for movement disorders, sedation, blood pressure, and fever with 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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Loxapine and Risperidone, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 7 days on the web. No card needed.
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 Risperidone
- Ibutilide + Risperidone Contraindicated
- Risperidone + Vandetanib Contraindicated
- Adagrasib + Risperidone Major
- Amiodarone + Risperidone Major
- Amisulpride + Risperidone Major
- Amoxapine + Risperidone Major
Frequently asked questions
Can I take Loxapine with Risperidone?
MediHelp rates the interaction as moderate. Loxapine and Risperidone 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 given together increase the likelihood of extrapyramidal symptoms, sedation, orthostatic hypotension, and rarely neuroleptic malignant syndrome. Hyperprolactinemia may also be amplified.
How serious is the interaction between Loxapine and Risperidone?
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 combination and use the lowest effective doses if both are needed. Monitor for movement disorders, sedation, blood pressure, and fever with 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.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
