Drug interactions
Parecoxib + Spironolactone
Severity: Moderate
Parecoxib and Spironolactone: 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
Parecoxib, a COX-2 inhibitor prodrug, can reduce renal prostaglandin synthesis, causing sodium and potassium retention and reduced diuretic response. With spironolactone this raises the risk of hyperkalemia and acute kidney injury.
What this interaction means in plain words
Parecoxib and Spironolactone 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 renal perfusion and prostaglandin-mediated potassium excretion, adding to aldosterone antagonism.
What to do
Monitor serum potassium and creatinine, ensure adequate hydration, and use the shortest effective parecoxib course.
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 Spironolactone
- Amiloride + Spironolactone Contraindicated
- Eplerenone + Spironolactone Contraindicated
- Spironolactone + Triamterene Contraindicated
- Abiraterone + Spironolactone Major
- Aceclofenac + Spironolactone Major
- Acemetacin + Spironolactone Major
Frequently asked questions
Can I take Parecoxib with Spironolactone?
MediHelp rates the interaction as moderate. Parecoxib and Spironolactone 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. Parecoxib, a COX-2 inhibitor prodrug, can reduce renal prostaglandin synthesis, causing sodium and potassium retention and reduced diuretic response. With spironolactone this raises the risk of hyperkalemia and acute kidney injury.
How serious is the interaction between Parecoxib and Spironolactone?
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 serum potassium and creatinine, ensure adequate hydration, and use the shortest effective parecoxib course.
What other medicines interact with Spironolactone?
MediHelp also lists interactions of Spironolactone with, for example, Amiloride, Eplerenone, Triamterene. The full list is on the Spironolactone page.
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