Rx Biotic is a blend of 4 major probiotic bacterial strains with two prebiotics: fructooligosaccharides and larch arabinogalactan. Clinical research has demonstrated that the beneficial bacteria in the bowel normalize gastrointestinal system function as well as contribute to improved immune response. Rx Biotic is delivered in a highly palatable, high potency powder with no flavorings. A 1/8 teaspoon scoop has been included for ease of dispensing.