Easily support your dog's digestive tract health. Vetri-Probiotic Everyday Bite-Sized Chews and Vetri-Probiotic BD Tablets contain direct-fed microorganisms (probiotics), helpful bacteria that help support healthy digestion and proper gastrointestinal function. Vetri-Probiotic Everyday Bite-Sized Chews with ease. They contain direct-fed microbials to support proper gastrointestinal function, plus fructooligosaccharides (FOS), which support the growth of lactic acid bacteria. Delicious chicken flavored Bite-Sized Chews. For dogs and cats.