Drug interactions
Conivaptan + Doxorubicin
Severity: Moderate
Conivaptan and Doxorubicin: 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 inhibits CYP3A4 and may modestly raise doxorubicin exposure. Increased toxicity such as myelosuppression is possible, though the evidence is limited.
What this interaction means in plain words
Conivaptan and Doxorubicin 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
Conivaptan inhibits CYP3A4, reducing doxorubicin metabolism.
What to do
Monitor blood counts and signs of anthracycline toxicity. Conivaptan is used briefly, so limit the duration of overlap where feasible.
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 Doxorubicin
Frequently asked questions
Can I take Conivaptan with Doxorubicin?
MediHelp rates the interaction as moderate. Conivaptan and Doxorubicin 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 inhibits CYP3A4 and may modestly raise doxorubicin exposure. Increased toxicity such as myelosuppression is possible, though the evidence is limited.
How serious is the interaction between Conivaptan and Doxorubicin?
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 blood counts and signs of anthracycline toxicity. Conivaptan is used briefly, so limit the duration of overlap where feasible.
What other medicines interact with Doxorubicin?
MediHelp also lists interactions of Doxorubicin with, for example, Adenovirus types 4 and 7 live, Belatacept, Cobicistat. The full list is on the Doxorubicin page.
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