Drug interactions
Ethotoin + Levofloxacin
Severity: Moderate
Ethotoin and Levofloxacin: 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
Quinolones have been associated with both lowered and raised phenytoin concentrations in isolated reports, and fluoroquinolones can lower seizure threshold. Data on ethotoin specifically are lacking, so the effect is uncertain.
What this interaction means in plain words
Ethotoin and Levofloxacin 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
Mechanism is not established; fluoroquinolones also have intrinsic proconvulsant activity.
What to do
Monitor for loss of seizure control or signs of toxicity during and after the antibiotic course. Check anticonvulsant levels if available and consider an alternative antibiotic in patients with poorly controlled seizures.
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 Levofloxacin
- Dronedarone + Levofloxacin Contraindicated
- Ibutilide + Levofloxacin Contraindicated
- Levofloxacin + Thioridazine Contraindicated
- Levofloxacin + Vandetanib Contraindicated
- Levofloxacin + Ziprasidone Contraindicated
- Adagrasib + Levofloxacin Major
Frequently asked questions
Can I take Ethotoin with Levofloxacin?
MediHelp rates the interaction as moderate. Ethotoin and Levofloxacin 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. Quinolones have been associated with both lowered and raised phenytoin concentrations in isolated reports, and fluoroquinolones can lower seizure threshold. Data on ethotoin specifically are lacking, so the effect is uncertain.
How serious is the interaction between Ethotoin and Levofloxacin?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for loss of seizure control or signs of toxicity during and after the antibiotic course. Check anticonvulsant levels if available and consider an alternative antibiotic in patients with poorly controlled seizures.
What other medicines interact with Levofloxacin?
MediHelp also lists interactions of Levofloxacin with, for example, Dronedarone, Ibutilide, Thioridazine. The full list is on the Levofloxacin page.
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