Drug interactions
Ofloxacin + Olanzapine
Severity: Moderate
Ofloxacin and Olanzapine: 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
Olanzapine has a small QT effect, and ofloxacin may add to it. The combined risk is generally modest but greater with electrolyte disturbance or cardiac disease.
What this interaction means in plain words
Ofloxacin and Olanzapine 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.
Ofloxacin belongs to Anti Bacterial; Olanzapine belongs to Central Nervous System.
Why it happens
Additive prolongation of cardiac repolarization.
What to do
Check baseline ECG and electrolytes in patients with additional QT risk factors. Choose a non-QT-prolonging antibiotic if risk is high.
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 Ofloxacin
- Ofloxacin + Thioridazine Contraindicated
- Adagrasib + Ofloxacin Major
- Amiodarone + Ofloxacin Major
- Amisulpride + Ofloxacin Major
- Anagrelide + Ofloxacin Major
- Arsenic trioxide + Ofloxacin Major
Other interactions of Olanzapine
Frequently asked questions
Can I take Ofloxacin with Olanzapine?
MediHelp rates the interaction as moderate. Ofloxacin and Olanzapine 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. Olanzapine has a small QT effect, and ofloxacin may add to it. The combined risk is generally modest but greater with electrolyte disturbance or cardiac disease.
How serious is the interaction between Ofloxacin and Olanzapine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Check baseline ECG and electrolytes in patients with additional QT risk factors. Choose a non-QT-prolonging antibiotic if risk is high.
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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