Drug interactions
Atorvastatin + Conivaptan
Severity: Moderate
Atorvastatin 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
Conivaptan is a CYP3A4 inhibitor and can raise atorvastatin concentrations. Higher statin exposure increases the risk of myopathy and rhabdomyolysis, though conivaptan is given only for short courses.
What this interaction means in plain words
Atorvastatin 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
Conivaptan inhibits CYP3A4, reducing the first-pass and systemic metabolism of atorvastatin.
What to do
Monitor for muscle pain, weakness or dark urine during the conivaptan infusion and consider temporarily withholding atorvastatin or checking CK if symptoms occur.
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 Atorvastatin
- Atorvastatin + Tipranavir Contraindicated
- Atazanavir + Atorvastatin Major
- Atorvastatin + Clarithromycin Major
- Atorvastatin + Cobicistat Major
- Atorvastatin + Cyclosporin Major
- Atorvastatin + Danazol Major
Frequently asked questions
Can I take Atorvastatin with Conivaptan?
MediHelp rates the interaction as moderate. Atorvastatin 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. Conivaptan is a CYP3A4 inhibitor and can raise atorvastatin concentrations. Higher statin exposure increases the risk of myopathy and rhabdomyolysis, though conivaptan is given only for short courses.
How serious is the interaction between Atorvastatin 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 for muscle pain, weakness or dark urine during the conivaptan infusion and consider temporarily withholding atorvastatin or checking CK if symptoms occur.
What other medicines interact with Atorvastatin?
MediHelp also lists interactions of Atorvastatin with, for example, Tipranavir, Atazanavir, Clarithromycin. The full list is on the Atorvastatin page.
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