Lactobacillus acidophilus, Lactobacillus rhamnosus, Bifidobacterium longum, Bifidobacterium bifidum, Saccharomyces boulardii are the probiotics that promote the growth of beneficial bacteria. Fructo Oligo Saccharide is a non-digestible carbohydrate or prebiotic that nourishes the existing good bacteria in the gut.