All mammals (including dogs, cats and humans) have numerous beneficial bacteria living in their digestive tracts (gut). Gentle Digest™ contains prebiotics and probiotics. Probiotics provides a source of beneficial intestinal bacteria and also helps to encourage their growth. Prebiotics help stimulate the growth and/or activity of probiotics. Gentle Digest™ is helpful for numerous issues including:antibiotic associated diarrhea, constipation, and irregularity occasional bouts of gas, periodic outbreaks of ear yeast infection. Aiding senior pets who have difficulty absorbing food nutrients Maximizes benefits for pets fed a raw diet Made in the USA!