Drug interactions
Gemifloxacin + Trifluoperazine
Severity: Moderate
Gemifloxacin and Trifluoperazine: moderate 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 gemifloxacin and trifluoperazine can prolong the QT interval, so combined use may raise the risk of torsades de pointes. The risk is higher in patients with hypokalemia, bradycardia or other QT-prolonging drugs.
What this interaction means in plain words
Gemifloxacin and Trifluoperazine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Why it happens
Additive QT prolongation through blockade of cardiac potassium channels.
What to do
Use a baseline ECG and correct electrolytes. Consider a non-quinolone antibiotic in patients with other risk factors for arrhythmia.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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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 Trifluoperazine?
MediHelp rates the interaction as moderate. Gemifloxacin and Trifluoperazine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Both gemifloxacin and trifluoperazine can prolong the QT interval, so combined use may raise the risk of torsades de pointes. The risk is higher in patients with hypokalemia, bradycardia or other QT-prolonging drugs.
How serious is the interaction between Gemifloxacin and Trifluoperazine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Use a baseline ECG and correct electrolytes. Consider a non-quinolone antibiotic in patients with other risk factors for arrhythmia.
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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