Effects of a lactic acid gel on vaginal health

Exploring the Effects of an Intravaginal Lactic Acid Gel on the Vaginal Microbiome

Early Phase 1 Interventional Queen's Medical Center · NCT05753813

This study is testing if the contraceptive Phexxi can improve vaginal health by increasing good bacteria and reducing discomfort for women.

Quick facts

PhaseEarly Phase 1
Study typeInterventional
Enrollment22 (estimated)
Ages18 Years to 54 Years
SexFemale
SponsorQueen's Medical Center Academic / other
Locations1 site (Honolulu, Hawaii)
Trial IDNCT05753813 on ClinicalTrials.gov

What this trial studies

This trial investigates the impact of the contraceptive method Phexxi on the vaginal microbiome, specifically its ability to promote lactic acid-producing lactobacilli. It employs a pre-post study design, assessing participants' vaginal microbiome before and after a four-week course of Phexxi. The primary outcomes include an increase in beneficial lactobacilli and a reduction in symptoms of vulvovaginitis. The study is conducted at Queen's Medical Center, where eligible patients will be approached by clinicians for participation.

Who should consider this trial

Good fit: Ideal candidates are pre-menopausal women aged 18-54 with a history of recurrent bacterial vaginosis or candidiasis.

Not a fit: Patients who are pregnant, post-menopausal, or have certain medical conditions such as kidney disease will not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved management of bacterial vaginosis and vulvovaginal candidiasis in women.

How similar studies have performed: While the approach of using Phexxi is novel, similar studies have shown promise in modifying the vaginal microbiome to improve health outcomes.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age 18-54
* Female
* Pre-menopausal
* Can speak and read in English
* Displays capacity for informed consent
* Has had 2 or more documented and/or self-reported episodes of symptomatic BV or candida infection in the last year, requiring, over-the-counter or prescription treatment

Exclusion Criteria:

* Pregnant or trying to become pregnant
* Post-menopausal
* Using NuvaRing device
* A past medical history of kidney disease, recurrent UTI, and/or urinary tract abnormalities
* Current UTI
* Using Phexxi as a contraceptive during the collection period of the study

Where this trial is running

Honolulu, Hawaii

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Bacterial VaginosisVulvovaginal Candidiasis
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.