Drug interactions
Chloroquine + Vandetanib
Severity: Contraindicated
Chloroquine and Vandetanib: 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
Vandetanib causes marked, dose-related QT prolongation and its labeling advises avoiding other QT-prolonging drugs. Adding chloroquine greatly increases the risk of torsades de pointes and sudden death.
What this interaction means in plain words
Chloroquine and Vandetanib 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.
Chloroquine belongs to Anti Parasitic; Vandetanib belongs to Oncology.
Why it happens
Additive prolongation of cardiac repolarization (QTc).
What to do
Do not coadminister; select a non-QT-prolonging alternative to chloroquine.
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 Chloroquine
- Chloroquine + Cisapride Contraindicated
- Chloroquine + Dofetilide Contraindicated
- Chloroquine + Dronedarone Contraindicated
- Chloroquine + Droperidol Contraindicated
- Chloroquine + Panobinostat Contraindicated
- Chloroquine + Pimozide Contraindicated
Other interactions of Vandetanib
- Amiodarone + Vandetanib Contraindicated
- Amisulpride + Vandetanib Contraindicated
- Amitriptyline + Vandetanib Contraindicated
- Anagrelide + Vandetanib Contraindicated
- Asenapine + Vandetanib Contraindicated
- Chlorpromazine + Vandetanib Contraindicated
Frequently asked questions
Can I take Chloroquine with Vandetanib?
MediHelp rates the interaction as contraindicated. Chloroquine and Vandetanib 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. Vandetanib causes marked, dose-related QT prolongation and its labeling advises avoiding other QT-prolonging drugs. Adding chloroquine greatly increases the risk of torsades de pointes and sudden death.
How serious is the interaction between Chloroquine and Vandetanib?
MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Do not coadminister; select a non-QT-prolonging alternative to chloroquine.
What other medicines interact with Chloroquine?
MediHelp also lists interactions of Chloroquine with, for example, Cisapride, Dofetilide, Dronedarone. The full list is on the Chloroquine page.
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