Potential vaginal probiotics: safety, tolerability and preliminary effectiveness.

Area of Science:

• Gynaecology and Microbiology
• Probiotic research and development
• Female urogenital tract health

Background:

• Vaginal discharge is a common gynecological complaint, often caused by bacterial vaginosis and candidiasis.
• Recurrent infections, drug resistance, and side effects necessitate alternative treatments.
• Lactobacillus crispatus strains are being investigated as potential probiotics for vaginal health.

Purpose of the Study:

• To evaluate the safety and tolerability of specific Lactobacillus crispatus strains in healthy women.
• To assess the impact of these probiotic strains on vaginal health parameters and microbial counts.
• To explore the efficacy of probiotic interventions in reducing vaginal dysbiosis indicators.

Main Methods:

• A randomized, double-blind, placebo-controlled crossover study involving 40 healthy women.
• Participants consumed either a probiotic capsule (Pro I or Pro II) or a placebo for one week, followed by a two-week washout period.
• Vaginal and fecal samples were collected, and self-reported questionnaires were used to monitor health parameters and microbial changes.

Main Results:

• The probiotic capsules were well-tolerated by all participants.
• The Pro II mixture significantly decreased the Nugent score and vaginal Gardnerella vaginalis counts.
• The Pro I group showed a reduction in total vaginal bacterial counts.

Conclusions:

• Selected vaginal Lactobacillus crispatus strains are safe and well-tolerated for women.
• The Pro II probiotic mixture demonstrates prospective efficacy in reducing bacterial vaginosis indicators and Gardnerella vaginalis.
• These L. crispatus strains show promise for developing targeted probiotics for female urogenital disorders.