Genitourinary Study of Fostering Lactobacillus to Optimize the Microbiome in Women's Health (GUD-… (NCT07234227) | Clinical Trial Compass
Not Yet RecruitingPhase 1
Genitourinary Study of Fostering Lactobacillus to Optimize the Microbiome in Women's Health (GUD-FLORA)
156 participantsStarted 2026-06
Plain-language summary
The objective of this study is to evaluate the use of a vaginal probiotic in patients with recurrent urinary tract infections (UTIs). Specifically, this study aims to evaluate factors associated with successful colonization with Lactobacillus crispatus - a known "healthy" and protective bacteria in both the vaginal and urinary microenvironments. The study will recruit patients over age 18 with a clinical diagnosis of recurrent UTIs, and will utilize a commercially available Lactobacillus vaginal probiotic. Participants will use the probiotic product with the commercially approved packaging and regimen for a total of 3 months. Vaginal and urinary samples will be obtained at four different timepoints. Participants will also be asked to complete surveys regarding tolerability and acceptability of the probiotic product. Patient samples will be analyzed in the laboratory to understand the effects of the probiotic on the local microbiome. Survey data and demographic information will be housed within the Research Electronic Data Capture (RedCap) secure server. For our primary analysis, Lactobacillus crispatus (L. crispatus) abundance will be measured and used as the outcome variable in a linear regression model evaluating the impact of baseline patient and microbiome characteristics on L. crispatus colonization.
Who can participate
Age range
18 Years
Sex
FEMALE
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria
* English-speaking
* ≥ 18 years of age
* Diagnosed with recurrent urinary tract infections (UTIs). Specifically, participants will have had 3 UTIs over the past 12 months or 2 UTIs over the past 6 months. At least one of these UTIs must be culture-proven. For UTIs to count for this study, if not culture-proven they must involve the onset of UTI-related symptoms (dysuria, urgency, frequency, suprapubic pain, or urinary changes, etc) with prescription of antibiotics directed at UTI treatment.
Exclusion Criteria
* Chronically self-catheterize.
* Currently use of a vaginal pessary.
* Have used a vaginal probiotic in the prior 3 months.
* Are pregnant or within 1 year postpartum.
* Have poorly controlled diabetes with an A1c of 9 or greater.
* Are considered immunocompromised
* Are unable to personally provide legal consent
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.