Jarro-Dophilus^® + FOS is a probiotic plus prebiotic that helps protect and maintain gut health.* It is a synbiotic with 6 probiotic strains combined with a prebiotic. These strains have been clinically shown to help protect and maintain a balanced intestinal microflora, and/or support the immune system and intestinal health.* FOS is a naturally derived prebiotic that supports the growth of beneficial bacteria in the intestinal tract.*