Drug interactions
Asenapine transdermal + Risperidone
Severity: Moderate
Asenapine transdermal 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
Both are antipsychotics that can prolong the QTc interval, and combining them adds to arrhythmia risk. Duplicate antipsychotic therapy also increases sedation, orthostasis and extrapyramidal effects.
What this interaction means in plain words
Asenapine transdermal 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.
Why it happens
Additive QT prolongation and overlapping dopamine/serotonin receptor blockade.
What to do
Avoid antipsychotic polypharmacy where possible. If both are used, monitor ECG and for extrapyramidal and sedative effects.
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 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 Asenapine transdermal with Risperidone?
MediHelp rates the interaction as moderate. Asenapine transdermal 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. Both are antipsychotics that can prolong the QTc interval, and combining them adds to arrhythmia risk. Duplicate antipsychotic therapy also increases sedation, orthostasis and extrapyramidal effects.
How serious is the interaction between Asenapine transdermal 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 antipsychotic polypharmacy where possible. If both are used, monitor ECG and for extrapyramidal and sedative effects.
What other medicines interact with Risperidone?
MediHelp also lists interactions of Risperidone with, for example, Ibutilide, Vandetanib, Adagrasib. The full list is on the Risperidone page.
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