Drug interactions
Parecoxib + Valsartan
Severity: Moderate
Parecoxib and Valsartan: 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
NSAIDs such as parecoxib can reduce renal prostaglandin synthesis, which may blunt the antihypertensive effect of valsartan and impair renal function. They can also contribute to hyperkalemia, particularly in volume-depleted, elderly or renally impaired patients.
What this interaction means in plain words
Parecoxib and Valsartan 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
COX-2 inhibition reduces vasodilatory renal prostaglandins, causing sodium retention and reduced glomerular perfusion, with reduced aldosterone and potassium excretion when combined with ARB.
What to do
Ensure adequate hydration and monitor renal function, potassium and blood pressure, especially within the first weeks. Use the lowest effective parecoxib dose for the shortest time.
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 Valsartan
- Aliskiren + Valsartan Contraindicated
- Sparsentan + Valsartan Contraindicated
- Aldesleukin + Valsartan Major
- Amifostine + Valsartan Major
- Amiloride + Valsartan Major
- Amlodipine-benazepril + Valsartan Major
Frequently asked questions
Can I take Parecoxib with Valsartan?
MediHelp rates the interaction as moderate. Parecoxib and Valsartan 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. NSAIDs such as parecoxib can reduce renal prostaglandin synthesis, which may blunt the antihypertensive effect of valsartan and impair renal function. They can also contribute to hyperkalemia, particularly in volume-depleted, elderly or renally impaired patients.
How serious is the interaction between Parecoxib and Valsartan?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Ensure adequate hydration and monitor renal function, potassium and blood pressure, especially within the first weeks. Use the lowest effective parecoxib dose for the shortest time.
What other medicines interact with Valsartan?
MediHelp also lists interactions of Valsartan with, for example, Aliskiren, Sparsentan, Aldesleukin. The full list is on the Valsartan page.
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