Oral Use of Lactobacillus Rhamnosus GR-1 and L. Fermentum RC-14 Significantly Alters Vaginal Flora: Randomized, Placebo-Controlled Trial in 64 Healthy Women

FEMS Immunol Med Microbiol. 2003 Mar 20;35(2):131-4. doi: 10.1016/S0928-8244(02)00465-0.

Abstract

Urogenital infections afflict an estimated one billion people each year. The size of this problem and the increased prevalence of multi-drug resistant pathogens make it imperative that alternative remedies be found. A randomized, placebo-controlled trial of 64 healthy women given daily oral capsules of Lactobacillus rhamnosus GR-1 and Lactobacillus fermentum RC-14 for 60 days showed no adverse effects. Microscopy analysis showed restoration from asymptomatic bacterial vaginosis microflora to a normal lactobacilli colonized microflora in 37% women during lactobacilli treatment compared to 13% on placebo (P=0.02). Lactobacilli were detected in more women in the lactobacilli-treated group than in the placebo group at 28 day (P=0.08) and 60 day (P=0.05) test points. Culture findings confirmed a significant increase in vaginal lactobacilli at day 28 and 60, a significant depletion in yeast at day 28 and a significant reduction in coliforms at day 28, 60 and 90 for lactobacilli-treated subjects versus controls. The combination of probiotic L. rhamnosus GR-1 and L. fermentum RC-14 is not only safe for daily use in healthy women, but it can reduce colonization of the vagina by potential pathogenic bacteria and yeast.

Publication types

  • Clinical Trial
  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Administration, Oral
  • Adult
  • Colony Count, Microbial
  • Enterobacteriaceae / isolation & purification*
  • Female
  • Fungi / isolation & purification*
  • Humans
  • Lactobacillus* / isolation & purification
  • Middle Aged
  • Probiotics / administration & dosage*
  • Vagina / microbiology*