Sodium Bicarbonate and Cefuroxime: Interaction Details
AI-assisted, pharmacist-reviewed · Source data updated Aug 8, 2026 · Sources: FDA labeling, DDInter 2.0, cited literature
Cefuroxime
Sodium Bicarbonate
How we grade severity & evidence
Severity levels
- Contraindicated: These should generally not be used together.
- Major: Potentially serious — often needs a change or close monitoring.
- Moderate: Can be significant — usually manageable with monitoring.
- Minor: Usually limited clinical impact.
Evidence grades
- Established: Well documented — supported by controlled studies or strong clinical data.
- Probable: Good supporting evidence, though not definitively proven.
- Suspected: Some evidence suggests this interaction, but it is not well established.
- Possible: Limited or conflicting evidence; the interaction may occur.
- Theoretical: Predicted from the drugs' pharmacology; not yet confirmed in people.
Ratings come from the documented interaction literature and are reviewed by a pharmacist. They describe the documented risk of the combination, not what will necessarily happen to you — your dose, timing, and health picture all matter.
What happens
Decreased cefuroxime axetil exposure
Interaction Deep Dive
Administer cefuroxime axetil at least 1 hour before or 2 hours after administration of short-acting antacids. Drugs that reduce gastric acidity may result in decreased bioavailability of cefuroxime axetil compared with administration in the fasting state1.
Why it happens (mechanism)
Decreased gastric acidity and reduced bioavailability
Common questions
Can I take Sodium Bicarbonate and Cefuroxime together?
Decreased cefuroxime axetil exposure Always confirm with your pharmacist or prescriber before making any change.
How serious is the Sodium Bicarbonate and Cefuroxime interaction?
It is rated major. Potentially serious — often needs a change or close monitoring.
How quickly could this interaction happen?
The documented onset is "unspecified". The timing of this interaction is not well characterized.
How strong is the evidence for this interaction?
The evidence is graded "theoretical". Predicted from the drugs' pharmacology; not yet confirmed in people.
Questions for your pharmacist
- Does my dose of Sodium Bicarbonate or Cefuroxime need adjusting while I take them together?
- What symptoms should prompt me to call you or my prescriber right away?
- Does the timing of my doses matter for this combination?
- Is there a safer alternative to one of these medications for me?
References (1)
- Product Information: CEFTIN oral tablets, oral suspension, cefuroxime axetil oral tablets, oral suspension. GlaxoSmithKline (per FDA), Research Triangle Park, NC, 2021.
Keep reading about Cefuroxime
Keep reading about Sodium Bicarbonate
These medications also interact with supplements
Prescription drugs aren't the whole picture — herbal and dietary supplements can interact with them too. From the evidence-graded Natural Medicines database:
major · moderate · minor — check everything you take with our drug–supplement interaction checker.
Check another combination
Our instant two-drug interaction checker is almost here.
Still have questions about this combination?
Every question gets a real answer from a licensed pharmacist — free, and usually within a day.
Ask the pharmacist