Probiotics 4 Dogs is a 100% all natural high strength probiotics blend, formulated using 5 probiotic strains, prebiotics and digestive enzymes. This blend of probiotics contains host specific bacteria and will deliver a high concentration of 21.5 Billion CFU's per 5g dose, it is specifically formulated to assist with digestive aid while supporting the immune system, the maintenance of gut flora and a healthy digestive tract.