Primary Objective: To confirm that the clinical cure rate of Vaginal Lactobacillus Dual Probiotic Capsules for bacterial vaginosis (BV) is superior to placebo at the 21-30 day post-treatment visit (Day 21 to Day 30).
Key Secondary Objective: To compare the clinical cure rate of Vaginal Lactobacillus Dual Probiotic Capsules versus placebo for BV at the 15-18 day post-treatment visit (Day 15 to Day 18).
Other Secondary Objectives: 1) To comprehensively assess the therapeutic efficacy of the study drug versus placebo for BV at Day 15 to 18 and Day 21 to 30; 2) To evaluate the safety profile of the study drug for BV treatment compared with placebo, including adverse events and clinical laboratory findings.
Study Design \& Randomization: This is a multicenter, randomized, double-blind, placebo-controlled Phase III clinical trial. An independent biostatistician generated the subject and drug randomization lists via SAS software, which were imported into an Interactive Web Response System (IWRS). Investigators at each site obtain randomization and drug numbers through the IWRS for subject allocation.
Blinding \& Allocation Concealment: Double-blinding is implemented for both investigators and subjects. The study drug and placebo are identical in appearance, shape, specification, and dosage form. Blinding procedures are performed by personnel unrelated to the trial, with a complete and detailed record of the entire blinding process maintained throughout the study.