Could 'Good' bacteria beat a common vaginal infection?

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Female, aged 18-50 years (inclusive), with prior sexual experience, willing to undergo vaginal drug administration, and agreeing to refrain from using intravaginal products (such as contraceptive creams, gels, foams, sponges, lubricants, douches, tampons, etc.) not specified in the study throughout the entire trial period. 2. Having a regular menstrual cycle (21-35 days). 3. Clinical diagnosis of bacterial vaginosis (BV), defined as meeting at least three of the Amsel criteria, with clue cells exceeding 20% of the total vaginal epithelial cells, and a Nugent score ≥ 7. 4. Able to understand and voluntarily sign the informed consent form. Exclusion Criteria: 1. Individuals with a history of allergies or known hypersensitivity to any known component of the investigational product. 2. Known current diagnosis of pelvic inflammatory disease, cervicitis, or acute urogenital infection. 3. Diagnosis of vulvovaginal candidiasis (VVC), trichomonal vaginitis (TV), or aerobic vaginitis (AV, with a score ≥5). 4. Use of vaginal douching or other intravaginal treatments within 14 days prior to screening, or anticipated use during the trial period. 5. Known diagnosis of uterine fibroids, endometrial hyperplasia, or adenomyosis requiring intervention, as assessed by the investigator. 6. Patients who have used topical or systemic antimicrobial or antimycotic agents within 14 days prior to screening, or are anticipated to require such treatment during the trial period. 7. History of gynecological surgery within 2 months prior to screening. 8. Vaginal speculum examination at screening reveals significant vaginal mucosal damage (e.g., mucosal edema, congestion, ulceration, erosion). 9. History of major diseases affecting the cardiovascular, hepatic, renal, pulmonary, gastrointestinal, neurological, metabolic, urogenital, endocrine, or psychiatric systems, which in the investigator's judgment may compromise the subject's safety. 10. Any of the following laboratory findings at screening: Hemoglobin (HGB) \< 100 g/L; White blood cell (WBC) count \< 3.5 × 10⁹/L, or neutrophil count (NEUT) \< 1.5 × 10⁹/L; Platelet (PLT) count \< 80 × 10⁹/L; Serum creatinine (Cr) \> 1.5 × upper limit of normal (ULN); Blood urea nitrogen (BUN) \> 1.5 × ULN; Alanine aminotransferase (ALT) \> 1.5 × ULN; Aspartate aminotransferase (AST) \> 1.5 × ULN; Alkaline phosphatase (ALP) \> 1.5 × ULN; Total bilirubin (TBIL) \> 1.5 × ULN. 11. Participation in a clinical study within 3 months prior to screening. 12. Planning pregnancy within 2 months before screening to 6 months after the trial, or positive pregnancy test at screening. 13. Termination of pregnancy within 60 days prior to screening. 14. Lactating or postmenopausal women. 15. Physical conditions, concurrent surgeries, medications, or clinically significant abnormal laboratory findings that may affect the evaluation of the investigational product, as determined by the investigator. 16. Any other circumstances deemed unsuitable for participation in this study by the investigator.