Drug interactions
Atenolol-chlorthalidone + Parecoxib
Severity: Moderate
Atenolol-chlorthalidone and Parecoxib: 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 is a COX-2 inhibitor prodrug that can blunt the antihypertensive and diuretic effects of atenolol and chlorthalidone. In volume-depleted patients, the combination raises the risk of acute kidney injury.
What this interaction means in plain words
Atenolol-chlorthalidone and Parecoxib 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 prostaglandins, causing sodium and water retention and reduced renal perfusion.
What to do
Use the shortest course possible. Monitor blood pressure and renal function and keep the patient well hydrated.
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 Atenolol-chlorthalidone
Frequently asked questions
Can I take Atenolol-chlorthalidone with Parecoxib?
MediHelp rates the interaction as moderate. Atenolol-chlorthalidone and Parecoxib 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 is a COX-2 inhibitor prodrug that can blunt the antihypertensive and diuretic effects of atenolol and chlorthalidone. In volume-depleted patients, the combination raises the risk of acute kidney injury.
How serious is the interaction between Atenolol-chlorthalidone and Parecoxib?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Use the shortest course possible. Monitor blood pressure and renal function and keep the patient well hydrated.
What other medicines interact with Atenolol-chlorthalidone?
MediHelp also lists interactions of Atenolol-chlorthalidone with, for example, Acebutolol, Aldesleukin, Amiodarone. The full list is on the Atenolol-chlorthalidone page.
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