Drug interactions
Gemifloxacin + Ibutilide
Severity: Contraindicated
Gemifloxacin and Ibutilide: 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
Ibutilide is a potent QT-prolonging class III antiarrhythmic with a high torsades risk. Gemifloxacin adds to the effect and may increase the chance of life-threatening arrhythmia.
What this interaction means in plain words
Gemifloxacin and Ibutilide 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; Ibutilide belongs to Cardiovascular.
Why it happens
Additive potassium channel blockade prolonging ventricular repolarization.
What to do
Avoid giving gemifloxacin to patients receiving ibutilide, and use a non-QT-prolonging antibiotic. If an antibiotic is essential, ensure continuous ECG monitoring with cardiology input.
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 Gemifloxacin
- Arsenic trioxide + Gemifloxacin Contraindicated
- Dofetilide + Gemifloxacin Contraindicated
- Gemifloxacin + Pimozide Contraindicated
- Gemifloxacin + Thioridazine Contraindicated
- Gemifloxacin + Vandetanib Contraindicated
- Gemifloxacin + Ziprasidone Contraindicated
Other interactions of Ibutilide
- Amiodarone + Ibutilide Contraindicated
- Amisulpride + Ibutilide Contraindicated
- Chlorpromazine + Ibutilide Contraindicated
- Clarithromycin + Ibutilide Contraindicated
- Desipramine + Ibutilide Contraindicated
- Dolasetron + Ibutilide Contraindicated
Frequently asked questions
Can I take Gemifloxacin with Ibutilide?
MediHelp rates the interaction as contraindicated. Gemifloxacin and Ibutilide 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. Ibutilide is a potent QT-prolonging class III antiarrhythmic with a high torsades risk. Gemifloxacin adds to the effect and may increase the chance of life-threatening arrhythmia.
How serious is the interaction between Gemifloxacin and Ibutilide?
MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid giving gemifloxacin to patients receiving ibutilide, and use a non-QT-prolonging antibiotic. If an antibiotic is essential, ensure continuous ECG monitoring with cardiology input.
What other medicines interact with Gemifloxacin?
MediHelp also lists interactions of Gemifloxacin with, for example, Arsenic trioxide, Dofetilide, Pimozide. The full list is on the Gemifloxacin page.
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