Ultimate Flora Pre & Probiotic from Renew Life is a high-potency formula for optimum digestive and immune health. It is designed to re-establish digestive balance with 150 billion live cultures from 40 probiotic strains including Bifidobacterium lactis, Bifidobacterium infantis, Lactobacillus acidophilus, Lactobacillus rhamnosus, Streptococcus thermophilus and much more.