Drug interactions
Ofloxacin + Tetrabenazine
Severity: Major
Ofloxacin and Tetrabenazine: 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
Tetrabenazine causes modest QT prolongation, and ofloxacin may add to this effect. The combination increases the risk of ventricular arrhythmias, especially in people with risk factors.
What this interaction means in plain words
Ofloxacin and Tetrabenazine 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.
Ofloxacin belongs to Anti Bacterial; Tetrabenazine belongs to Central Nervous System.
Why it happens
Additive pharmacodynamic QT prolongation.
What to do
Prefer a non-QT-prolonging antibiotic. If both are needed, obtain a baseline ECG, monitor for arrhythmia 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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Other interactions of Ofloxacin
- Ofloxacin + Thioridazine Contraindicated
- Adagrasib + Ofloxacin Major
- Amiodarone + Ofloxacin Major
- Amisulpride + Ofloxacin Major
- Anagrelide + Ofloxacin Major
- Arsenic trioxide + Ofloxacin Major
Other interactions of Tetrabenazine
- Dronedarone + Tetrabenazine Contraindicated
- Isocarboxazid + Tetrabenazine Contraindicated
- Linezolid + Tetrabenazine Contraindicated
- Phenelzine + Tetrabenazine Contraindicated
- Pimozide + Tetrabenazine Contraindicated
- Procarbazine + Tetrabenazine Contraindicated
Frequently asked questions
Can I take Ofloxacin with Tetrabenazine?
MediHelp rates the interaction as major. Ofloxacin and Tetrabenazine 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. Tetrabenazine causes modest QT prolongation, and ofloxacin may add to this effect. The combination increases the risk of ventricular arrhythmias, especially in people with risk factors.
How serious is the interaction between Ofloxacin and Tetrabenazine?
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 needed, obtain a baseline ECG, monitor for arrhythmia 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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