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Updated: Sep 12, 2025

Author Spotlight: Revolutionizing Research on Vaginal Microbiome Interactions Using a Vaginal Chip
Published on: February 16, 2024
Impact of a multi-strain L. crispatus-based vaginal synbiotic on the vaginal microbiome: a randomized
Jacques Ravel1, Sheri Simmons2, Eleni Greenwood Jaswa3
1Center for Advanced Microbiome Research and Innovation, Institute for Genome Sciences and Department of Microbiology & Immunology, University of Maryland, School of Medicine, Baltimore, MD, USA.
Abstract:
A clinical trial of a multi-strain vaginal synbiotic (NCT05659745, registered 12/19/2022 at clinicaltrials.gov) led to an optimal vaginal microbiome dominated by L. crispatus (CST I). The synbiotic led to a significant increase in L. crispatus compared to placebo (p < 0.05), and conversion to CST I was significantly higher with the vaginal synbiotic than with placebo (90 vs 11%; p < 0.002). Mechanistically, the synbiotic reduced Gardnerella vaginalis and Candida, clinically important microbes.
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