Drug interactions
Gemtuzumab + Ofloxacin
Severity: Moderate
Gemtuzumab and Ofloxacin: 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 drugs can prolong the QT interval, so combined use may increase the risk of torsades de pointes. Patients receiving chemotherapy often have electrolyte disturbances that raise this risk further.
What this interaction means in plain words
Gemtuzumab and Ofloxacin 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
Additive QT prolongation through effects on cardiac repolarization.
What to do
Monitor ECG and keep potassium and magnesium within normal range. Consider an antibiotic with less QT effect if other 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
Frequently asked questions
Can I take Gemtuzumab with Ofloxacin?
MediHelp rates the interaction as moderate. Gemtuzumab and Ofloxacin 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 drugs can prolong the QT interval, so combined use may increase the risk of torsades de pointes. Patients receiving chemotherapy often have electrolyte disturbances that raise this risk further.
How serious is the interaction between Gemtuzumab and Ofloxacin?
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 ECG and keep potassium and magnesium within normal range. Consider an antibiotic with less QT effect if other 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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