Drug interactions
Amlodipine-hydrochlorothiazide-valsartan + Conivaptan
Severity: Moderate
Amlodipine-hydrochlorothiazide-valsartan 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 amlodipine concentrations, causing hypotension and edema. Conivaptan also raises sodium and shifts fluid, and thiazide use adds volume and sodium effects.
What this interaction means in plain words
Amlodipine-hydrochlorothiazide-valsartan 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 metabolism of amlodipine.
What to do
Monitor blood pressure and serum sodium during conivaptan use. Reduce the amlodipine dose if hypotension occurs.
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 Amlodipine-hydrochlorothiazide-valsartan
- Aliskiren + Amlodipine-hydrochlorothiazide-valsartan Contraindicated
- Amlodipine-hydrochlorothiazide-valsartan + Dofetilide Contraindicated
- Amlodipine-hydrochlorothiazide-valsartan + Sparsentan Contraindicated
- Aceclofenac + Amlodipine-hydrochlorothiazide-valsartan Major
- Aldesleukin + Amlodipine-hydrochlorothiazide-valsartan Major
- Amifostine + Amlodipine-hydrochlorothiazide-valsartan Major
Frequently asked questions
Can I take Amlodipine-hydrochlorothiazide-valsartan with Conivaptan?
MediHelp rates the interaction as moderate. Amlodipine-hydrochlorothiazide-valsartan 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 amlodipine concentrations, causing hypotension and edema. Conivaptan also raises sodium and shifts fluid, and thiazide use adds volume and sodium effects.
How serious is the interaction between Amlodipine-hydrochlorothiazide-valsartan 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 blood pressure and serum sodium during conivaptan use. Reduce the amlodipine dose if hypotension occurs.
What other medicines interact with Amlodipine-hydrochlorothiazide-valsartan?
MediHelp also lists interactions of Amlodipine-hydrochlorothiazide-valsartan with, for example, Aliskiren, Dofetilide, Sparsentan. The full list is on the Amlodipine-hydrochlorothiazide-valsartan page.
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