Drug interactions
Nicardipine + Nirmatrelvir
Severity: Moderate
Nicardipine and Nirmatrelvir: 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
Nirmatrelvir inhibits CYP3A4, the main enzyme that clears nicardipine, so nicardipine exposure may rise. This can cause excessive vasodilation with hypotension, flushing, headache, and peripheral edema.
What this interaction means in plain words
Nicardipine and Nirmatrelvir 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.
Nicardipine belongs to Cardiovascular; Nirmatrelvir belongs to Anti Virals.
Why it happens
Nirmatrelvir inhibits CYP3A4-mediated metabolism of nicardipine in the liver and gut wall.
What to do
Monitor blood pressure and heart rate during the nirmatrelvir course and for a few days after it ends. Consider a temporary nicardipine dose reduction if hypotension or vasodilatory 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 Nicardipine
Other interactions of Nirmatrelvir
- Alfuzosin + Nirmatrelvir Contraindicated
- Amiodarone + Nirmatrelvir Contraindicated
- Apalutamide + Nirmatrelvir Contraindicated
- Carbamazepine + Nirmatrelvir Contraindicated
- Colchicine + Nirmatrelvir Contraindicated
- Dronedarone + Nirmatrelvir Contraindicated
Frequently asked questions
Can I take Nicardipine with Nirmatrelvir?
MediHelp rates the interaction as moderate. Nicardipine and Nirmatrelvir 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. Nirmatrelvir inhibits CYP3A4, the main enzyme that clears nicardipine, so nicardipine exposure may rise. This can cause excessive vasodilation with hypotension, flushing, headache, and peripheral edema.
How serious is the interaction between Nicardipine and Nirmatrelvir?
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 heart rate during the nirmatrelvir course and for a few days after it ends. Consider a temporary nicardipine dose reduction if hypotension or vasodilatory symptoms occur.
What other medicines interact with Nicardipine?
MediHelp also lists interactions of Nicardipine with, for example, Amifostine, Amlodipine-olmesartan-hydrochlorothiazide, Betrixaban. The full list is on the Nicardipine page.
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