Moderate evidenceWomen's health

Women's Probiotic Blend

Multi-strain blends sold for vaginal and urinary health. The evidence is reasonable for gynecological infections as an add-on to standard treatment and weak for preventing urinary tract infections.

Evidence last reviewed: August 2026

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What the science says

Adjunct in vaginal infections Moderate evidence
A meta-analysis pooling 35 randomized trials found that probiotics added to standard treatment improved cure and reduced recurrence in bacterial vaginosis and vulvovaginal candidiasis. Strains, doses and routes varied widely, so the finding does not identify which blend to buy.
Preventing urinary tract infections Limited evidence
A systematic review and meta-analysis in premenopausal women suggested a reduction in recurrent urinary tract infections, but an earlier Cochrane review of probiotics for UTI prevention found no statistically significant benefit and rated the trials as poor quality.

Dosage & safety

Studied doseTrials used roughly 1-10 billion CFU daily, orally or vaginally, for one to three months. Retail blends typically supply 5-50 billion CFU of mixed Lactobacillus strains; higher counts have not been shown to work better.

SafetyWell tolerated, with transient bloating the usual complaint. Live organisms should be avoided in severely immunocompromised people, those with central venous catheters, and critically ill patients. Probiotics are an addition to, not a replacement for, antibiotics in a diagnosed infection.

Scientific references

The role of probiotics as adjunct treatment in the prevention and management of gynecological infections: An updated meta-analysis of 35 RCT studies
Abavisani M, Sahebi S, Dadgar F, Peikfalak F, Keikha M — Taiwan J Obstet Gynecol, 2024
Efficacy of Probiotics as Prophylaxis for Urinary Tract Infections in Premenopausal Women: A Systematic Review and Meta-Analysis
Abdullatif VA, Sur RL, Eshaghian E, Gaura KA, Goldman B, Panchatsharam PK — Cureus, 2021
Probiotics for preventing urinary tract infections in adults and children
Schwenger EM, Tejani AM, Loewen PS — Cochrane Database Syst Rev, 2015

Where to buy

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