Drug interactions
Eribulin + Mefloquine
Severity: Major
Eribulin and Mefloquine: 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
Eribulin can prolong the QT interval, and mefloquine may add to this effect. The combination increases the potential for arrhythmia.
What this interaction means in plain words
Eribulin and Mefloquine 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.
Eribulin belongs to Oncology; Mefloquine belongs to Anti Parasitic.
Why it happens
Additive pharmacodynamic QT prolongation.
What to do
Avoid if an alternative antimalarial exists. If used, obtain ECGs and correct potassium and magnesium before and during treatment.
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 Mefloquine
- Arsenic trioxide + Mefloquine Contraindicated
- Dronedarone + Mefloquine Contraindicated
- Ibutilide + Mefloquine Contraindicated
- Levoketoconazole + Mefloquine Contraindicated
- Mefloquine + Nilotinib Contraindicated
- Mefloquine + Pimozide Contraindicated
Other interactions of Eribulin
Frequently asked questions
Can I take Eribulin with Mefloquine?
MediHelp rates the interaction as major. Eribulin and Mefloquine 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. Eribulin can prolong the QT interval, and mefloquine may add to this effect. The combination increases the potential for arrhythmia.
How serious is the interaction between Eribulin and Mefloquine?
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 an alternative antimalarial exists. If used, obtain ECGs and correct potassium and magnesium before and during treatment.
What other medicines interact with Mefloquine?
MediHelp also lists interactions of Mefloquine with, for example, Arsenic trioxide, Dronedarone, Ibutilide. The full list is on the Mefloquine page.
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