Probiotics after antibiotics: a gut check

NCT ID NCT07425704

Not yet recruiting Knowledge-focused Sponsor: Cultech Ltd Source: ClinicalTrials.gov ↗

First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looks at whether taking probiotics after a course of antibiotics can help restore the natural balance of bacteria in the gut. Fifty adults aged 18-40 who are prescribed a cephalosporin antibiotic will take either a probiotic supplement or a placebo for several weeks. Researchers will analyze stool and vaginal samples to see how the microbiome changes.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: Probiotic (Lab4S) containing lactic acid bacteria and Saccharomyces boulardii
What this could lead to: If it works, this could show that taking probiotics after antibiotics helps restore a healthy gut microbiome.
What could go wrong: This is a small, early-stage study with only 50 people. It may not prove probiotics are effective, and results may not apply to everyone.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

MICROBIOME PROBIOTIC

Contacts and locations

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Study contacts

Contact

Phone: •••-•••-•••• Email: •••••@•••••

Locations

Comac Medical

Sofia, Bulgaria

Contact Phone: •••-•••-•••• Email: •••••@•••••

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