Ciprofloxacin and Probiotics, a synergy.
Probiotic supplementation during ciprofloxacin therapy reduces the incidence of antibiotic-associated diarrhea by restoring colonization resistance in the gut microbiome. Meta-analyses of probiotics across antibiotic classes show roughly a 50 percent reduction in antibiotic-associated diarrhea. The benefit is greatest when probiotics are started early in the antibiotic course.
One pair, every claim cited. The two substances, the type, the mechanism, the recommendation, and the primary literature.
Same shape as the other 1,729 pairs in the public database.
From the interaction database
What the row says.
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At a glance
- Substances
- Ciprofloxacin and Probiotics
- Pair type
- Synergy
- Evidence (highest tier)
- Strong
- Source citations
- 2 sources
- Stack Score effect
- +2 to your Stack Score (per scored synergy row).
- Scope
- Supplement × Prescription
- Last verified
- May 30, 2026
Synergy · Strong evidence
Synergy
What is happening. Probiotic supplementation during ciprofloxacin therapy reduces the incidence of antibiotic-associated diarrhea by restoring colonization resistance in the gut microbiome. Meta-analyses of probiotics across antibiotic classes show roughly a 50 percent reduction in antibiotic-associated diarrhea. The benefit is greatest when probiotics are started early in the antibiotic course.
Mechanism. Probiotics restore colonization resistance disrupted by broad-spectrum antibiotics, competing with opportunistic pathogens including Clostridioides difficile for nutrients and binding sites on intestinal epithelium.
Recommendation. Take probiotics throughout your ciprofloxacin course, but separate doses by at least 2 hours to protect the live cultures from direct antibiotic exposure. Continue probiotics for at least one week after the antibiotic ends.
Minimum separation. 120
Sources (2)
- Doar NW, Samuthiram SD. Qualitative Analysis of the Efficacy of Probiotic Strains in the Prevention of Antibiotic-Associated Diarrhea. Cureus. 2023;15(6):e40261. PMID 37440799
- McFarland LV. Deciphering meta-analytic results: a mini-review of probiotics for the prevention of paediatric antibiotic-associated diarrhoea and Clostridium difficile infections. Benef Microbes. 2015;6(2):189-94. PMID 24889895
Stack Score
How this pair moves the number.
Effect on the composite score
If both Ciprofloxacin and Probiotics are in the same stack, this pair applies +2 to your Stack Score (per scored synergy row).
The full algorithm, the clamping rules, and four worked stacks are documented at /methodology/stack-score.
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