Drug interactions
Gemifloxacin + Inotuzumab
Severity: Major
Gemifloxacin and Inotuzumab: 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
Inotuzumab ozogamicin can prolong the QT interval and gemifloxacin has the same liability. Use together may add to QTc prolongation and arrhythmia risk.
What this interaction means in plain words
Gemifloxacin and Inotuzumab 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.
Why it happens
Additive effects on ventricular repolarization causing QT prolongation.
What to do
Prefer a non-QT-prolonging antibiotic. If both are required, obtain ECGs and electrolytes at baseline and periodically 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 Gemifloxacin
- Arsenic trioxide + Gemifloxacin Contraindicated
- Dofetilide + Gemifloxacin Contraindicated
- Gemifloxacin + Ibutilide Contraindicated
- Gemifloxacin + Pimozide Contraindicated
- Gemifloxacin + Thioridazine Contraindicated
- Gemifloxacin + Vandetanib Contraindicated
Frequently asked questions
Can I take Gemifloxacin with Inotuzumab?
MediHelp rates the interaction as major. Gemifloxacin and Inotuzumab 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. Inotuzumab ozogamicin can prolong the QT interval and gemifloxacin has the same liability. Use together may add to QTc prolongation and arrhythmia risk.
How serious is the interaction between Gemifloxacin and Inotuzumab?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Prefer a non-QT-prolonging antibiotic. If both are required, obtain ECGs and electrolytes at baseline and periodically during treatment.
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.
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