All Poopsie Pup digestive supplements include 100% natural psyllium husk, a non-fermentable soluble fiber and prebiotic. Unlike other probiotics and prebiotics that cause gas and bloating, psyllium improves the composition of your dog's mircobiome through increased stool water and boosts gut function, resulting in symptomatic relief of IBS/IBD, reduced gut inflammation, and regulation of bowel movements.