Multi-Probiotic® YC-7™ contains NutraFlora® scFOS® prebiotic fiber and seven probiotic strains that have been carefully selected to maintain healthy vaginal, bladder, and intestinal microflora balance. YC-7 is rich in lactobacilli because extensive studies have confirmed that various lactobacilli strains possess properties that are important for supporting female health. Multi-Probiotics by Douglas Laboratories are tested for product potency and genetic RNA identity to ensure viability, effectiveness, and label claim verification for every product. Multi-Probiotics include acid and bile resistant strains and undergo a patented cyroprotectant stabilization process for stability.