Drug interactions
Levofloxacin + Ziprasidone
Severity: Contraindicated
Levofloxacin and Ziprasidone: contraindicated 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
Ziprasidone is known to prolong the QT interval, and its labeling advises against combination with other QT-prolonging drugs. Adding levofloxacin increases the risk of torsades de pointes and sudden cardiac death.
What this interaction means in plain words
Levofloxacin and Ziprasidone are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two.
Levofloxacin belongs to Anti Bacterial; Ziprasidone belongs to Central Nervous System.
Why it happens
Additive blockade of cardiac potassium channels delaying ventricular repolarization.
What to do
Avoid the combination and use a non-QT-prolonging antibiotic. If a fluoroquinolone is essential, consider an alternative antipsychotic or specialist advice with ECG monitoring.
What to ask your pharmacist
- Is there an alternative to one of these two medicines for me?
- If both are essential, who is monitoring me and how often?
- Which symptoms mean I should stop and seek help straight away?
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Other interactions of Levofloxacin
- Dronedarone + Levofloxacin Contraindicated
- Ibutilide + Levofloxacin Contraindicated
- Levofloxacin + Thioridazine Contraindicated
- Levofloxacin + Vandetanib Contraindicated
- Adagrasib + Levofloxacin Major
- Amiodarone + Levofloxacin Major
Other interactions of Ziprasidone
- Amiodarone + Ziprasidone Contraindicated
- Amitriptyline + Ziprasidone Contraindicated
- Arsenic trioxide + Ziprasidone Contraindicated
- Bedaquiline + Ziprasidone Contraindicated
- Chloroquine + Ziprasidone Contraindicated
- Citalopram + Ziprasidone Contraindicated
Frequently asked questions
Can I take Levofloxacin with Ziprasidone?
MediHelp rates the interaction as contraindicated. Levofloxacin and Ziprasidone are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two. Ziprasidone is known to prolong the QT interval, and its labeling advises against combination with other QT-prolonging drugs. Adding levofloxacin increases the risk of torsades de pointes and sudden cardiac death.
How serious is the interaction between Levofloxacin and Ziprasidone?
MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid the combination and use a non-QT-prolonging antibiotic. If a fluoroquinolone is essential, consider an alternative antipsychotic or specialist advice with ECG monitoring.
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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