Drug interactions
Droperidol + Ofloxacin
Severity: Major
Droperidol and Ofloxacin: major interaction.
Last updated Sources: UK SmPC
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
Droperidol has a boxed warning for QT prolongation and torsades de pointes, and ofloxacin adds to this effect. Concurrent use can lead to life-threatening ventricular arrhythmias.
What this interaction means in plain words
Droperidol and Ofloxacin 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 hERG potassium channel blockade leading to QT prolongation.
What to do
Avoid the combination where possible and choose a non-QT-prolonging antiemetic or antibiotic. If both are needed, use continuous ECG monitoring and correct electrolytes.
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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References
Other interactions of Ofloxacin
- Ofloxacin + Thioridazine Contraindicated
- Adagrasib + Ofloxacin Major
- Amiodarone + Ofloxacin Major
- Amisulpride + Ofloxacin Major
- Anagrelide + Ofloxacin Major
- Arsenic trioxide + Ofloxacin Major
Frequently asked questions
Can I take Droperidol with Ofloxacin?
MediHelp rates the interaction as major. Droperidol and Ofloxacin 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. Droperidol has a boxed warning for QT prolongation and torsades de pointes, and ofloxacin adds to this effect. Concurrent use can lead to life-threatening ventricular arrhythmias.
How serious is the interaction between Droperidol and Ofloxacin?
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 where possible and choose a non-QT-prolonging antiemetic or antibiotic. If both are needed, use continuous ECG monitoring and correct electrolytes.
What other medicines interact with Ofloxacin?
MediHelp also lists interactions of Ofloxacin with, for example, Thioridazine, Adagrasib, Amiodarone. The full list is on the Ofloxacin page.
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