Drug interactions
Diltiazem + Nilotinib
Severity: Major
Diltiazem and Nilotinib: 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
Both drugs inhibit CYP3A4 and can raise each other's concentrations. Increased nilotinib exposure raises the risk of QT prolongation and torsades de pointes, while diltiazem excess can cause bradycardia.
What this interaction means in plain words
Diltiazem and Nilotinib 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.
Diltiazem belongs to Cardiovascular; Nilotinib belongs to Oncology.
Why it happens
Mutual CYP3A4 inhibition, with additive QT/cardiac conduction effects.
What to do
Avoid if possible; otherwise obtain a baseline ECG, correct potassium and magnesium, and monitor QTc and heart rate.
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 Diltiazem
- Diltiazem + Flibanserin Contraindicated
- Diltiazem + Ivabradine Contraindicated
- Diltiazem + Lomitapide Contraindicated
- Diltiazem + Lonafarnib Contraindicated
- Acebutolol + Diltiazem Major
- Alfentanil + Diltiazem Major
Other interactions of Nilotinib
- Amiodarone + Nilotinib Contraindicated
- Arsenic trioxide + Nilotinib Contraindicated
- Disopyramide + Nilotinib Contraindicated
- Dofetilide + Nilotinib Contraindicated
- Dronedarone + Nilotinib Contraindicated
- Droperidol + Nilotinib Contraindicated
Frequently asked questions
Can I take Diltiazem with Nilotinib?
MediHelp rates the interaction as major. Diltiazem and Nilotinib 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. Both drugs inhibit CYP3A4 and can raise each other's concentrations. Increased nilotinib exposure raises the risk of QT prolongation and torsades de pointes, while diltiazem excess can cause bradycardia.
How serious is the interaction between Diltiazem and Nilotinib?
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 possible; otherwise obtain a baseline ECG, correct potassium and magnesium, and monitor QTc and heart rate.
What other medicines interact with Diltiazem?
MediHelp also lists interactions of Diltiazem with, for example, Flibanserin, Ivabradine, Lomitapide. The full list is on the Diltiazem page.
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