Drug interactions
Ibutilide + Sunitinib
Severity: Major
Ibutilide and Sunitinib: major 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
Ibutilide has a high intrinsic risk of torsades de pointes, and sunitinib can also prolong the QT interval. Combining them increases the likelihood of life-threatening arrhythmia.
What this interaction means in plain words
Ibutilide and Sunitinib 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.
Ibutilide belongs to Cardiovascular; Sunitinib belongs to Oncology.
Why it happens
Additive pharmacodynamic prolongation of ventricular repolarization.
What to do
Avoid use together and consider electrical cardioversion or another antiarrhythmic strategy. If ibutilide is given, ensure continuous ECG monitoring and normal electrolytes.
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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Other interactions of Sunitinib
- Adagrasib + Sunitinib Major
- Amiodarone + Sunitinib Major
- Amisulpride + Sunitinib Major
- Anagrelide + Sunitinib Major
- Apalutamide + Sunitinib Major
- Arsenic trioxide + Sunitinib Major
Other interactions of Ibutilide
- Amiodarone + Ibutilide Contraindicated
- Amisulpride + Ibutilide Contraindicated
- Chlorpromazine + Ibutilide Contraindicated
- Clarithromycin + Ibutilide Contraindicated
- Desipramine + Ibutilide Contraindicated
- Dolasetron + Ibutilide Contraindicated
Frequently asked questions
Can I take Ibutilide with Sunitinib?
MediHelp rates the interaction as major. Ibutilide and Sunitinib 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. Ibutilide has a high intrinsic risk of torsades de pointes, and sunitinib can also prolong the QT interval. Combining them increases the likelihood of life-threatening arrhythmia.
How serious is the interaction between Ibutilide and Sunitinib?
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 use together and consider electrical cardioversion or another antiarrhythmic strategy. If ibutilide is given, ensure continuous ECG monitoring and normal electrolytes.
What other medicines interact with Sunitinib?
MediHelp also lists interactions of Sunitinib with, for example, Adagrasib, Amiodarone, Amisulpride. The full list is on the Sunitinib page.
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