Drug interactions
Aspirin / citric acid / sodium bicarbonate + Diclofenac
Severity: Major
Aspirin / citric acid / sodium bicarbonate and Diclofenac: major interaction.
Last updated Sources: US FDA label
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
The aspirin in this effervescent product adds to diclofenac's gastrointestinal toxicity and bleeding risk, and diclofenac may blunt aspirin's antiplatelet effect. Renal effects may also be additive.
What this interaction means in plain words
Aspirin / citric acid / sodium bicarbonate and Diclofenac can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Why it happens
Additive cyclooxygenase inhibition reduces platelet function and gastric mucosal protection.
What to do
Avoid regular combined use and use gastroprotection with a proton pump inhibitor if unavoidable. Monitor for gastrointestinal bleeding and renal function.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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References
Other interactions of Diclofenac
- Diclofenac + Ketorolac Contraindicated
- Diclofenac + Ketorolac intranasal Contraindicated
- Aceclofenac + Diclofenac Major
- Acemetacin + Diclofenac Major
- Alteplase + Diclofenac Major
- Amiloride + Diclofenac Major
Frequently asked questions
Can I take Aspirin / citric acid / sodium bicarbonate with Diclofenac?
MediHelp rates the interaction as major. Aspirin / citric acid / sodium bicarbonate and Diclofenac can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. The aspirin in this effervescent product adds to diclofenac's gastrointestinal toxicity and bleeding risk, and diclofenac may blunt aspirin's antiplatelet effect. Renal effects may also be additive.
How serious is the interaction between Aspirin / citric acid / sodium bicarbonate and Diclofenac?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid regular combined use and use gastroprotection with a proton pump inhibitor if unavoidable. Monitor for gastrointestinal bleeding and renal function.
What other medicines interact with Diclofenac?
MediHelp also lists interactions of Diclofenac with, for example, Ketorolac, Ketorolac intranasal, Aceclofenac. The full list is on the Diclofenac page.
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