Now Foods Probiotic-10 & Bifido Boost dietary supplement is an advanced combination of ten bacterial strains with the PreticX™ (XOS) complex. Each serving delivers 25 billion colony-forming units (CFU) from selected strains of Lactobacillus and Bifidobacterium , naturally occurring in the human gastrointestinal tract. PreticX™ is a unique complex with xylooligosaccharides (XOS) , which feed beneficial gut bacteria. Key Features of Now Foods Probiotic-10 & Bifido Boost Contains 10 strains of bacterial cultures (25 × 10⁹ cfu in 3 capsules) Enriched with PreticX™ (XOS) complexGluten-free, soy-free, GMO-free, suitable for vegetarians Suitable for adults - 90 capsules per pack