Drug interactions
Ofloxacin + Risperidone
Severity: Moderate
Ofloxacin and Risperidone: 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
Both agents can lengthen the QTc interval, so concurrent use may increase the risk of torsades de pointes. The risk is higher with electrolyte abnormalities, bradycardia, or other QT-prolonging drugs.
What this interaction means in plain words
Ofloxacin and Risperidone 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; Risperidone belongs to Central Nervous System.
Why it happens
Additive hERG potassium channel inhibition delaying ventricular repolarization.
What to do
Obtain a baseline ECG and correct electrolytes. Monitor the QTc and consider an alternative antibiotic if risk factors are present.
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 Risperidone
- Ibutilide + Risperidone Contraindicated
- Risperidone + Vandetanib Contraindicated
- Adagrasib + Risperidone Major
- Amiodarone + Risperidone Major
- Amisulpride + Risperidone Major
- Amoxapine + Risperidone Major
Frequently asked questions
Can I take Ofloxacin with Risperidone?
MediHelp rates the interaction as moderate. Ofloxacin and Risperidone 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. Both agents can lengthen the QTc interval, so concurrent use may increase the risk of torsades de pointes. The risk is higher with electrolyte abnormalities, bradycardia, or other QT-prolonging drugs.
How serious is the interaction between Ofloxacin and Risperidone?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Obtain a baseline ECG and correct electrolytes. Monitor the QTc and consider an alternative antibiotic if risk factors are present.
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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