Drug interactions
Cisapride + Ribociclib
Severity: Contraindicated
Cisapride and Ribociclib: contraindicated 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
Ribociclib is a moderate CYP3A4 inhibitor and also prolongs the QT interval in a dose-dependent manner. Combined with cisapride, which is a CYP3A4 substrate with a known risk of torsades de pointes, this could produce serious arrhythmia.
What this interaction means in plain words
Cisapride and Ribociclib are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two.
Cisapride belongs to Gastrointestinal Tract; Ribociclib belongs to Oncology.
Why it happens
Ribociclib inhibits CYP3A4, which may increase cisapride exposure, and both drugs prolong the QT interval additively.
What to do
Avoid the combination and choose a non-QT-prolonging prokinetic or antiemetic. If it cannot be avoided, specialist supervision with ECG and electrolyte monitoring is required.
What to ask your pharmacist
- Is there an alternative to one of these two medicines for me?
- If both are essential, who is monitoring me and how often?
- Which symptoms mean I should stop and seek help straight away?
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Other interactions of Cisapride
- Apomorphine + Cisapride Contraindicated
- Artemether + Cisapride Contraindicated
- Azithromycin + Cisapride Contraindicated
- Ceritinib + Cisapride Contraindicated
- Chloroquine + Cisapride Contraindicated
- Cisapride + Citalopram Contraindicated
Other interactions of Ribociclib
- Amiodarone + Ribociclib Contraindicated
- Dofetilide + Ribociclib Contraindicated
- Dronedarone + Ribociclib Contraindicated
- Flibanserin + Ribociclib Contraindicated
- Ibutilide + Ribociclib Contraindicated
- Levoketoconazole + Ribociclib Contraindicated
Frequently asked questions
Can I take Cisapride with Ribociclib?
MediHelp rates the interaction as contraindicated. Cisapride and Ribociclib are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two. Ribociclib is a moderate CYP3A4 inhibitor and also prolongs the QT interval in a dose-dependent manner. Combined with cisapride, which is a CYP3A4 substrate with a known risk of torsades de pointes, this could produce serious arrhythmia.
How serious is the interaction between Cisapride and Ribociclib?
MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid the combination and choose a non-QT-prolonging prokinetic or antiemetic. If it cannot be avoided, specialist supervision with ECG and electrolyte monitoring is required.
What other medicines interact with Cisapride?
MediHelp also lists interactions of Cisapride with, for example, Apomorphine, Artemether, Azithromycin. The full list is on the Cisapride page.
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