Evidence supporting the use of: Lactobacillus rhamnosus
For the body system: Vagina

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Synopsis

Source of validity: Scientific
Rating (out of 5): 4

Lactobacillus rhamnosus is a probiotic bacterium that has been studied for its role in supporting vaginal health, particularly in maintaining or restoring the normal vaginal microbiota. Scientific evidence suggests that a healthy vaginal environment is dominated by Lactobacillus species, which help maintain a low pH and prevent the overgrowth of pathogenic bacteria and yeast. L. rhamnosus, especially the GG and GR-1 strains, have been shown in clinical studies to colonize the vaginal mucosa, outcompete harmful microorganisms, and produce substances like lactic acid and bacteriocins that inhibit pathogens.

Several randomized controlled trials and systematic reviews indicate that oral or intravaginal administration of L. rhamnosus can help prevent and treat bacterial vaginosis (BV) and vulvovaginal candidiasis, often in conjunction with standard therapies. For example, studies have demonstrated reduced recurrence rates of BV and improved restoration of healthy vaginal flora with probiotic supplementation. However, the efficacy can depend on the specific strains used and the method of administration, with some strains showing more consistent benefits than others.

While more research is needed to establish optimal dosages and protocols, the use of L. rhamnosus for vaginal health is supported by a growing body of clinical evidence, making it one of the better-studied probiotics for this body system.

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