Probiotic 100B offers a combination of seven different strains of healthy bacteria of human origin to support a healthy immune system*. These cultures are manufactured through a fermentation process and freeze-dried, then blended with fructooligosaccharides (FOS). The cultures are negative for salmonella and other pathogens. Shelf stable for two years at room temperature, the nitrogen-packed caps guarantee longer life and maintain their strength for years if refrigerated. Probiotic 100B contains the following live strains: L.acidophilus (50%), L. casei (10%), L. plantarum (10%), L. rhamnosus (10%), B. lactis (10%), B. longum (5%) and S. thermophilus (5%). What makes Ayush's probiotic formulas unique are their high quality, human origin, which makes them not only well-suited to adapt to the human body, but also makes them acid and bile resistant, so that they survive the stomach acid*. Ayush's formulas are also fortified with a prebiotic that has symbiotic effects with the probiotic strains in the formulas*. Additionally, Ayush's probiotics are available in a vegetarian capsule, backed by scientific studies, and are third-party tested.