Vaginal pH dropped slightly (by 0.19 at 4 weeks). Nugent scores and lactobacilli levels did not change significantly.
Martoni 2022 · Source
Lactobacillus brevis
Strain UALbr-02 (UAS Labs)
A lactobacillus from pickles, sauerkraut and other fermented plant foods, bringing a long food history to the blend.
Fermentednaturally found in pickles and sauerkraut
159women in a vaginal tablet trial with a related strain
10strains in the Daily Probiotic blend
Why we love it
L. brevis comes from fermented foods people have eaten for generations. We added it to give the blend another lactobacillus with a long food history, working alongside the other nine strains.
What does the research show?
Bacterial vaginosis
Vaginal tablets that combined strain CD2 with L. salivarius and L. plantarum were studied in two trials of women with BV. These were vaginal tablets, not capsules taken by mouth.
Vaginal pH
A small open study gave 36 women an oral 10-strain capsule that included our strain, UALbr-02, and measured vaginal pH.
Mouth sores during cancer care
Strain CD2 lozenges were studied in 68 people having radiotherapy for head and neck cancer.
Studies
Human study tested in people Lab study a starting point, not proof
Studies that included our strain (UALbr-02)
Studies on other strains of this species
About 80% of women with BV were cured or improved, compared with 74% on the pH tablet. No side effects reported.
Hemalatha 2012 · Source
All 18 women on the tablets were BV-free at the end, compared with 2 of 16 on placebo. Two weeks later, 61% compared with 19%.
Mastromarino 2009 · Source
Severe mouth sores were just as common with the lozenges (41%) as without (42%).
De Sanctis 2019 · Source
Which strain do we use?
Our strain is L. brevis UALbr-02 (UAS Labs). It was one of 10 strains in a small oral blend study. The other studies above mostly used strain CD2, and results belong to the strain tested.
Is L. brevis safe to take?
If you are immunocompromised, have a central line or a heart valve problem, or are critically ill, ask your clinician before taking probiotics. If you are pregnant or breastfeeding, ask your clinician first. In the lozenge study, some people stopped because of nausea. In the 10-strain study, two women had mild cramping or bloating that went away.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Last reviewed: November 2026.
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Reviewed by the Momotaro Apotheca medical team, including OB-GYNs and naturopathic doctors. Educational information, not medical advice. All ingredient research