“Vaginal probiotics prevent recurrent yeast infections.”
Vaginal probiotics have not been shown to prevent repeat yeast infections over the long term; added to antifungals, they cut repeats only for a few months.
If yeast infections keep coming back, a probiotic is not a reliable way to stop them. A prescribed antifungal maintenance plan has stronger evidence; a probiotic can be an optional add-on, but expect little from it.
If you have had three or more yeast infections in a year, ask your clinician to confirm the cause with a test and discuss a six-month antifungal maintenance plan.
Safety note: Intravaginal products can irritate tissue, and supplement contents may differ from labels. People who are severely immunocompromised should not self-treat with live microorganisms. Do not place food products in the vagina.
Talk to a healthcare professional if: you have three or more yeast infections in a year, symptoms come back within two months of treatment, or you are pregnant, have diabetes or have a weakened immune system.
Trials that added probiotics to antifungal treatment found fewer repeat infections for one to six months, but the benefit faded at longer follow-up, the products varied, and the evidence is low or very low certainty. That real but short-lived effect is much smaller than the claim suggests, and antifungal maintenance treatment has stronger support.
Vaginal probiotics have not been shown to prevent repeat yeast infections over the long term; added to antifungals, they cut repeats only for a few months. A 2026 review of 14 trials found fewer recurrences at six months with probiotics plus antifungals and no benefit at longer follow-up, and a Cochrane review found fewer relapses at one month only. For women with three or more infections a year, the US guideline's standard plan is weekly oral fluconazole for six months.
Repeat yeast infections, defined as three or more in under a year, affect fewer than 5% of women. Some are caused by less common Candida species or by other conditions with similar symptoms, which is why repeat symptoms should be confirmed with a test. The trials used different strains, doses, and both vaginal and oral products, and most added probiotics to antifungal medicine rather than using them alone, so no store product can claim their results.
- Chen R, Qing W, Xu N, Wang L, Chen Z, Chen M, Wu S. Probiotics for the treatment of vulvovaginal candidiasis in nonpregnant women: a systematic review and meta-analysis of randomized controlled trials. American Journal of Obstetrics and Gynecology. 2026;234(6):1604-1622. DOI: 10.1016/j.ajog.2026.01.009. PMID: 41547378
- Xie HY, Feng D, Wei DM, Mei L, Chen H, Wang X, Fang F. Probiotics for vulvovaginal candidiasis in non-pregnant women. Cochrane Database of Systematic Reviews. 2017;(11):CD010496. DOI: 10.1002/14651858.CD010496.pub2. PMID: 29168557. PMCID: PMC6486023
- Workowski KA, Bachmann LH, Chan PA, Johnston CM, Muzny CA, Park I, Reno H, Zenilman JM, Bolan GA. Sexually Transmitted Infections Treatment Guidelines, 2021. MMWR Recommendations and Reports. 2021;70(4):1-187. DOI: 10.15585/mmwr.rr7004a1. PMID: 34292926