Daily oral Lactobacillus to reduce overactive bladder symptoms
Official title: Oral Lactobacillus Supplementation as Treatment for Overactive Bladder Syndrome: A Randomised Controlled Trial
Run by Medical University of Vienna · NCT06546189 · Data updated 2026-11-12
This trial will see if taking an oral Lactobacillus supplement twice daily for six months reduces urgency, frequency, or leakage in adult women with overactive bladder.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years and up |
| Sex | Women only |
| Enrollment | 100 (estimated) |
| Sponsor | Medical University of Vienna Academic / other |
| Locations | 1 site (Vienna) |
| Status | Recruiting |
| Started | April 1, 2025 |
| Main results expected | March 31, 2027 |
| Study ends | October 1, 2027 |
| Registry record updated | September 29, 2025 |
| Trial ID | NCT06546189 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adult women diagnosed with overactive bladder syndrome or mixed urinary incontinence dominated by overactive bladder symptoms are the intended participants.
✕Probably not a fit
People under 18 and those with neurogenic overactive bladder are excluded and are unlikely to benefit from this intervention.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This is a randomized, placebo-controlled study randomizing participants to receive OMNi BiOTiC® 41167 or matched placebo twice daily for six months. Investigators will collect vaginal and urethral swabs and urine via a single-use catheter at baseline and follow-up visits to monitor changes in the urogenital microbiome. Symptom changes will be tracked with validated overactive bladder questionnaires and voiding diaries. The protocol seeks to link any symptom improvement to shifts in microbial communities associated with Lactobacillus supplementation.
Why it matters
Potential benefit: If successful, this could provide a low-risk, non-antibiotic option to reduce urgency, frequency, and incontinence for women with overactive bladder.
How similar studies have gone: Previous small studies of vaginal or oral Lactobacillus for urinary or urogenital symptoms have shown mixed but sometimes promising results, so this approach is not entirely untested.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * diagnosis of overactive bladder syndrome or mixed urinary incontinence with predominance of overactive bladder symptoms Exclusion Criteria: * under age 18 * neurogenic overactive bladder
Where it's running
-
Medical University of Vienna
Vienna, Austria Recruiting
Study contacts
- Study coordinator: Marianne Koch
- Email: marianne.koch@meduniwien.ac.at
- Phone: +4314040029150
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.