Drug interactions
Cariprazine + Droperidol
Severity: Major
Cariprazine and Droperidol: major interaction.
Last updated Sources: UK SmPC
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
Droperidol is a sedating dopamine antagonist that prolongs the QT interval, and cariprazine is another antipsychotic. Combined use may increase sedation, extrapyramidal symptoms and potentially arrhythmia risk. Droperidol carries a boxed warning for QT prolongation and torsades de pointes.
What this interaction means in plain words
Cariprazine and Droperidol can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Why it happens
Additive dopamine D2 antagonism and CNS depression, with additive potential QT prolongation (pharmacodynamic).
What to do
Avoid the combination if possible, and obtain a baseline ECG and correct potassium and magnesium before any use. Monitor the ECG and level of sedation, and use the lowest droperidol dose.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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References
Other interactions of Cariprazine
Frequently asked questions
Can I take Cariprazine with Droperidol?
MediHelp rates the interaction as major. Cariprazine and Droperidol can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Droperidol is a sedating dopamine antagonist that prolongs the QT interval, and cariprazine is another antipsychotic. Combined use may increase sedation, extrapyramidal symptoms and potentially arrhythmia risk. Droperidol carries a boxed warning for QT prolongation and torsades de pointes.
How serious is the interaction between Cariprazine and Droperidol?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid the combination if possible, and obtain a baseline ECG and correct potassium and magnesium before any use. Monitor the ECG and level of sedation, and use the lowest droperidol dose.
What other medicines interact with Cariprazine?
MediHelp also lists interactions of Cariprazine with, for example, Alfentanil, Amisulpride, Amobarbital. The full list is on the Cariprazine page.
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