Drug interactions
Pentamidine + Sunitinib
Severity: Major
Pentamidine 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
Sunitinib and pentamidine can each prolong the QT interval, and pentamidine has been linked to torsades de pointes. Together they increase arrhythmia risk, particularly with electrolyte disturbances.
What this interaction means in plain words
Pentamidine 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.
Pentamidine belongs to Anti Parasitic; Sunitinib belongs to Oncology.
Why it happens
Additive QTc prolongation.
What to do
Avoid if an alternative exists. Otherwise monitor ECG and correct potassium, magnesium and calcium before and during therapy.
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 Pentamidine
- Clomipramine + Pentamidine Contraindicated
- Desipramine + Pentamidine Contraindicated
- Dronedarone + Pentamidine Contraindicated
- Moxifloxacin + Pentamidine Contraindicated
- Nortriptyline + Pentamidine Contraindicated
- Pentamidine + Pimozide Contraindicated
Frequently asked questions
Can I take Pentamidine with Sunitinib?
MediHelp rates the interaction as major. Pentamidine 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. Sunitinib and pentamidine can each prolong the QT interval, and pentamidine has been linked to torsades de pointes. Together they increase arrhythmia risk, particularly with electrolyte disturbances.
How serious is the interaction between Pentamidine 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 if an alternative exists. Otherwise monitor ECG and correct potassium, magnesium and calcium before and during therapy.
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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