Drug interactions
Gemifloxacin + Vandetanib
Severity: Contraindicated
Gemifloxacin 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. Adding gemifloxacin further increases the arrhythmia risk.
What this interaction means in plain words
Gemifloxacin 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.
Gemifloxacin belongs to Anti Bacterial; Vandetanib belongs to Oncology.
Why it happens
Additive pharmacodynamic QT prolongation.
What to do
Do not combine; use a non-QT-prolonging antibiotic. If a QT-prolonging drug is unavoidable, monitor ECGs and electrolytes frequently.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Gemifloxacin and Vandetanib, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 14 days on the web. No card needed.
Other interactions of Gemifloxacin
- Arsenic trioxide + Gemifloxacin Contraindicated
- Dofetilide + Gemifloxacin Contraindicated
- Gemifloxacin + Ibutilide Contraindicated
- Gemifloxacin + Pimozide Contraindicated
- Gemifloxacin + Thioridazine Contraindicated
- Gemifloxacin + Ziprasidone 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 Gemifloxacin with Vandetanib?
MediHelp rates the interaction as contraindicated. Gemifloxacin 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. Adding gemifloxacin further increases the arrhythmia risk.
How serious is the interaction between Gemifloxacin 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 a non-QT-prolonging antibiotic. If a QT-prolonging drug is unavoidable, monitor ECGs and electrolytes frequently.
What other medicines interact with Gemifloxacin?
MediHelp also lists interactions of Gemifloxacin with, for example, Arsenic trioxide, Dofetilide, Ibutilide. The full list is on the Gemifloxacin page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
