Drug interactions
Carbamazepine + Conivaptan
Severity: Moderate
Carbamazepine and Conivaptan: 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
Carbamazepine may reduce conivaptan exposure and weaken its effect in raising serum sodium. Inadequate correction of hyponatremia could result.
What this interaction means in plain words
Carbamazepine and Conivaptan 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
Induction of CYP3A4 by carbamazepine increases metabolism of conivaptan.
What to do
Monitor serum sodium frequently and titrate conivaptan to response. Consider an alternative if sodium correction is inadequate.
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 Carbamazepine
- Artemether / lumefantrine + Carbamazepine Contraindicated
- Cabotegravir + Carbamazepine Contraindicated
- Carbamazepine + Delamanid Contraindicated
- Carbamazepine + Dienogest / estradiol valerate Contraindicated
- Carbamazepine + Doravirine Contraindicated
- Carbamazepine + Elbasvir / grazoprevir Contraindicated
Frequently asked questions
Can I take Carbamazepine with Conivaptan?
MediHelp rates the interaction as moderate. Carbamazepine and Conivaptan 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. Carbamazepine may reduce conivaptan exposure and weaken its effect in raising serum sodium. Inadequate correction of hyponatremia could result.
How serious is the interaction between Carbamazepine and Conivaptan?
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 serum sodium frequently and titrate conivaptan to response. Consider an alternative if sodium correction is inadequate.
What other medicines interact with Carbamazepine?
MediHelp also lists interactions of Carbamazepine with, for example, Artemether / lumefantrine, Cabotegravir, Delamanid. The full list is on the Carbamazepine page.
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