Drug interactions
Metronidazole + Vincristine liposomal
Severity: Minor
Metronidazole and Vincristine liposomal: minor 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
Vincristine is a CYP3A4 substrate, and strong inhibitors markedly increase neurotoxicity. Metronidazole is a weak inhibitor at most, so a significant pharmacokinetic effect is unlikely. Metronidazole can cause peripheral neuropathy with prolonged use, which could add to vincristine neurotoxicity.
What this interaction means in plain words
Metronidazole and Vincristine liposomal have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Possible weak CYP3A4 inhibition, plus overlapping neurotoxicity with prolonged metronidazole use.
What to do
No dose change is needed; monitor for neuropathy and constipation and limit metronidazole duration where possible.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Metronidazole
- Ethanol + Metronidazole Contraindicated
- Metronidazole + Pimozide Contraindicated
- Amiodarone + Metronidazole Major
- Disulfiram + Metronidazole Major
- Ergotamine + Metronidazole Major
- Lomitapide + Metronidazole Major
Frequently asked questions
Can I take Metronidazole with Vincristine liposomal?
MediHelp rates the interaction as minor. Metronidazole and Vincristine liposomal have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Vincristine is a CYP3A4 substrate, and strong inhibitors markedly increase neurotoxicity. Metronidazole is a weak inhibitor at most, so a significant pharmacokinetic effect is unlikely. Metronidazole can cause peripheral neuropathy with prolonged use, which could add to vincristine neurotoxicity.
How serious is the interaction between Metronidazole and Vincristine liposomal?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No dose change is needed; monitor for neuropathy and constipation and limit metronidazole duration where possible.
What other medicines interact with Metronidazole?
MediHelp also lists interactions of Metronidazole with, for example, Ethanol, Pimozide, Amiodarone. The full list is on the Metronidazole page.
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