Drug interactions
Aspirin / citric acid / sodium bicarbonate + Ciprofloxacin
Severity: Moderate
Aspirin / citric acid / sodium bicarbonate and Ciprofloxacin: 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
Effervescent buffered aspirin products may reduce ciprofloxacin absorption, risking lower antibiotic concentrations. The effect is mainly from the buffering components, and the magnitude is uncertain.
What this interaction means in plain words
Aspirin / citric acid / sodium bicarbonate and Ciprofloxacin 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
Raised gastric pH and possible cation-related reduction of ciprofloxacin absorption.
What to do
Give ciprofloxacin at least 2 hours before or 6 hours after the buffered preparation. Monitor clinical response to the antibiotic.
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 Ciprofloxacin
- Agomelatine + Ciprofloxacin Contraindicated
- Ciprofloxacin + Fezolinetant Contraindicated
- Ciprofloxacin + Thioridazine Contraindicated
- Ciprofloxacin + Tizanidine Contraindicated
- Ciprofloxacin + Vandetanib Contraindicated
- Alosetron + Ciprofloxacin Major
Frequently asked questions
Can I take Aspirin / citric acid / sodium bicarbonate with Ciprofloxacin?
MediHelp rates the interaction as moderate. Aspirin / citric acid / sodium bicarbonate and Ciprofloxacin 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. Effervescent buffered aspirin products may reduce ciprofloxacin absorption, risking lower antibiotic concentrations. The effect is mainly from the buffering components, and the magnitude is uncertain.
How serious is the interaction between Aspirin / citric acid / sodium bicarbonate and Ciprofloxacin?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Give ciprofloxacin at least 2 hours before or 6 hours after the buffered preparation. Monitor clinical response to the antibiotic.
What other medicines interact with Ciprofloxacin?
MediHelp also lists interactions of Ciprofloxacin with, for example, Agomelatine, Fezolinetant, Thioridazine. The full list is on the Ciprofloxacin page.
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