Drug interactions
Gemifloxacin + Haloperidol
Severity: Major
Gemifloxacin and Haloperidol: 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
Both drugs prolong the QT interval, and haloperidol has a well-documented association with torsades de pointes, particularly at high or intravenous doses. Combined use raises the risk of life-threatening arrhythmia.
What this interaction means in plain words
Gemifloxacin and Haloperidol 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.
Gemifloxacin belongs to Anti Bacterial; Haloperidol belongs to Central Nervous System.
Why it happens
Additive QT prolongation through hERG potassium channel blockade.
What to do
Avoid the combination if an alternative antibiotic is available. If needed, obtain a baseline and follow-up ECG and keep potassium and magnesium normal.
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
Other interactions of Haloperidol
- Dofetilide + Haloperidol Contraindicated
- Dronedarone + Haloperidol Contraindicated
- Haloperidol + Ibutilide Contraindicated
- Haloperidol + Levoketoconazole Contraindicated
- Haloperidol + Panobinostat Contraindicated
- Haloperidol + Pimozide Contraindicated
Frequently asked questions
Can I take Gemifloxacin with Haloperidol?
MediHelp rates the interaction as major. Gemifloxacin and Haloperidol 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. Both drugs prolong the QT interval, and haloperidol has a well-documented association with torsades de pointes, particularly at high or intravenous doses. Combined use raises the risk of life-threatening arrhythmia.
How serious is the interaction between Gemifloxacin and Haloperidol?
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 if an alternative antibiotic is available. If needed, obtain a baseline and follow-up ECG and keep potassium and magnesium normal.
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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