FortiFlora® PRO Synbiotic Action™ Powdered Probiotic & Probiotic Supplement for Dogs Purina® Pro Plan Veterinary Supplements® FortiFlora® PRO Synbiotic Action canine supplement contains a powerful prebiotic and probiotic combination to support your dog’s GI health, with probiotics to nourish your dog’s gut and psyllium to support a healthy microbiome. This veterinary-exclusive supplement is from the makers of the #1 probiotic supplement recommended by veterinarians.* General Health: Probiotic dog powder supplement for the management of puppies and adult dogs with diarrhea Synbiotic action of prebiotics and probiotics to manage soft stool and support a healthy intestinal microbiome Contains prebiotics to increase gastrointestinal microbial diversity Contains prebiotic fibre (psyllium) to stimulate the growth of specific bacteria, including Lactobacillus and Bifidobacterium species