Drug interactions
Trimipramine + Vandetanib
Severity: Major
Trimipramine and Vandetanib: 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
Vandetanib markedly prolongs the QT interval and has caused torsades de pointes and sudden death. Trimipramine also has QT-prolonging potential, so combined use increases arrhythmia risk.
What this interaction means in plain words
Trimipramine and Vandetanib 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.
Trimipramine belongs to Central Nervous System; Vandetanib belongs to Oncology.
Why it happens
Additive prolongation of cardiac repolarization (QT interval).
What to do
Avoid the combination and choose a non-QT-prolonging antidepressant. If unavoidable, perform frequent ECG monitoring and keep potassium and magnesium normal.
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 Trimipramine
- Disopyramide + Trimipramine Contraindicated
- Dofetilide + Trimipramine Contraindicated
- Ibutilide + Trimipramine Contraindicated
- Isocarboxazid + Trimipramine Contraindicated
- Pentamidine + Trimipramine Contraindicated
- Phenelzine + Trimipramine Contraindicated
Other interactions of Vandetanib
- Amiodarone + Vandetanib Contraindicated
- Amisulpride + Vandetanib Contraindicated
- Amitriptyline + Vandetanib Contraindicated
- Anagrelide + Vandetanib Contraindicated
- Asenapine + Vandetanib Contraindicated
- Chloroquine + Vandetanib Contraindicated
Frequently asked questions
Can I take Trimipramine with Vandetanib?
MediHelp rates the interaction as major. Trimipramine and Vandetanib 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. Vandetanib markedly prolongs the QT interval and has caused torsades de pointes and sudden death. Trimipramine also has QT-prolonging potential, so combined use increases arrhythmia risk.
How serious is the interaction between Trimipramine and Vandetanib?
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 and choose a non-QT-prolonging antidepressant. If unavoidable, perform frequent ECG monitoring and keep potassium and magnesium normal.
What other medicines interact with Trimipramine?
MediHelp also lists interactions of Trimipramine with, for example, Disopyramide, Dofetilide, Ibutilide. The full list is on the Trimipramine page.
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