Drug interactions
Asenapine transdermal + Fluphenazine
Severity: Moderate
Asenapine transdermal and Fluphenazine: 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 may prolong the QTc interval and cause sedation, and they share dopamine blockade. Combined use increases the risk of arrhythmia, oversedation and extrapyramidal effects.
What this interaction means in plain words
Asenapine transdermal and Fluphenazine 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, sedation and QTc prolongation.
What to do
Avoid antipsychotic polypharmacy if possible. If combined, monitor ECG, sedation and extrapyramidal symptoms.
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 Fluphenazine
- Arsenic trioxide + Fluphenazine Contraindicated
- Dofetilide + Fluphenazine Contraindicated
- Fluphenazine + Ibutilide Contraindicated
- Fluphenazine + Pimozide Contraindicated
- Adagrasib + Fluphenazine Major
- Alfentanil + Fluphenazine Major
Frequently asked questions
Can I take Asenapine transdermal with Fluphenazine?
MediHelp rates the interaction as moderate. Asenapine transdermal and Fluphenazine 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 may prolong the QTc interval and cause sedation, and they share dopamine blockade. Combined use increases the risk of arrhythmia, oversedation and extrapyramidal effects.
How serious is the interaction between Asenapine transdermal and Fluphenazine?
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 if possible. If combined, monitor ECG, sedation and extrapyramidal symptoms.
What other medicines interact with Fluphenazine?
MediHelp also lists interactions of Fluphenazine with, for example, Arsenic trioxide, Dofetilide, Ibutilide. The full list is on the Fluphenazine page.
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