Drug interactions
Conivaptan + Vinorelbine
Severity: Moderate
Conivaptan and Vinorelbine: 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
Conivaptan is a CYP3A4 inhibitor and may raise vinorelbine concentrations. This may increase myelosuppression and neurotoxicity, though its use is short-term and in hospital.
What this interaction means in plain words
Conivaptan and Vinorelbine 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
Inhibition of CYP3A4-mediated vinorelbine metabolism.
What to do
Monitor neutrophil counts and neurotoxicity during and after conivaptan infusion. Consider an alternative treatment for hyponatremia if possible.
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 Vinorelbine
Frequently asked questions
Can I take Conivaptan with Vinorelbine?
MediHelp rates the interaction as moderate. Conivaptan and Vinorelbine 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. Conivaptan is a CYP3A4 inhibitor and may raise vinorelbine concentrations. This may increase myelosuppression and neurotoxicity, though its use is short-term and in hospital.
How serious is the interaction between Conivaptan and Vinorelbine?
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 neutrophil counts and neurotoxicity during and after conivaptan infusion. Consider an alternative treatment for hyponatremia if possible.
What other medicines interact with Vinorelbine?
MediHelp also lists interactions of Vinorelbine with, for example, Adenovirus types 4 and 7 live, Apalutamide, Belatacept. The full list is on the Vinorelbine page.
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