Drug interactions
Hydroxychloroquine + Vandetanib
Severity: Contraindicated
Hydroxychloroquine 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 has a boxed warning for QT prolongation, torsades de pointes, and sudden death, and its labeling advises avoiding other QT-prolonging drugs. Hydroxychloroquine adds to this risk.
What this interaction means in plain words
Hydroxychloroquine 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.
Hydroxychloroquine belongs to Musculoskeletal; Vandetanib belongs to Oncology.
Why it happens
Additive QT prolongation through pharmacodynamic effects on cardiac repolarization.
What to do
Do not combine; use an alternative to hydroxychloroquine, or if unavoidable, monitor ECG and electrolytes intensively.
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 Hydroxychloroquine
- Arsenic trioxide + Hydroxychloroquine Contraindicated
- Cisapride + Hydroxychloroquine Contraindicated
- Dronedarone + Hydroxychloroquine Contraindicated
- Hydroxychloroquine + Pimozide Contraindicated
- Hydroxychloroquine + Thioridazine Contraindicated
- Adagrasib + Hydroxychloroquine Major
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 Hydroxychloroquine with Vandetanib?
MediHelp rates the interaction as contraindicated. Hydroxychloroquine 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 has a boxed warning for QT prolongation, torsades de pointes, and sudden death, and its labeling advises avoiding other QT-prolonging drugs. Hydroxychloroquine adds to this risk.
How serious is the interaction between Hydroxychloroquine 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 combine; use an alternative to hydroxychloroquine, or if unavoidable, monitor ECG and electrolytes intensively.
What other medicines interact with Hydroxychloroquine?
MediHelp also lists interactions of Hydroxychloroquine with, for example, Arsenic trioxide, Cisapride, Dronedarone. The full list is on the Hydroxychloroquine page.
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