Drug interactions
Gilteritinib + Hydroxychloroquine
Severity: Major
Gilteritinib and Hydroxychloroquine: 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
Gilteritinib is associated with QT prolongation and torsades de pointes. Hydroxychloroquine adds to this effect, increasing the chance of dangerous arrhythmia in patients who are often already acutely ill.
What this interaction means in plain words
Gilteritinib and Hydroxychloroquine 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.
Gilteritinib belongs to Oncology; Hydroxychloroquine belongs to Musculoskeletal.
Why it happens
Additive effects on cardiac repolarization produce additive QT prolongation.
What to do
Avoid the combination where possible. If it is required, monitor the ECG and electrolytes regularly and interrupt or reduce gilteritinib per labeling if the QTc becomes markedly prolonged.
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 Hydroxychloroquine
- Arsenic trioxide + Hydroxychloroquine Contraindicated
- Cisapride + Hydroxychloroquine Contraindicated
- Dronedarone + Hydroxychloroquine Contraindicated
- Hydroxychloroquine + Pimozide Contraindicated
- Hydroxychloroquine + Thioridazine Contraindicated
- Hydroxychloroquine + Vandetanib Contraindicated
Other interactions of Gilteritinib
- Gilteritinib + Pimozide Contraindicated
- Amiodarone + Gilteritinib Major
- Amisulpride + Gilteritinib Major
- Amitriptyline + Gilteritinib Major
- Anagrelide + Gilteritinib Major
- Apalutamide + Gilteritinib Major
Frequently asked questions
Can I take Gilteritinib with Hydroxychloroquine?
MediHelp rates the interaction as major. Gilteritinib and Hydroxychloroquine 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. Gilteritinib is associated with QT prolongation and torsades de pointes. Hydroxychloroquine adds to this effect, increasing the chance of dangerous arrhythmia in patients who are often already acutely ill.
How serious is the interaction between Gilteritinib and Hydroxychloroquine?
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 where possible. If it is required, monitor the ECG and electrolytes regularly and interrupt or reduce gilteritinib per labeling if the QTc becomes markedly prolonged.
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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