NaturVet Advanced Probiotics & Enzymes Plus Vet Strength PB6 Probiotic Powder is formulated for those furry friends with sensitive stomachs and digestive issues. It was specifically created to support and balance your pal’s total GI (gastrointestinal) system with a PB6 technology that enables beneficial bacteria to travel through his GI tract. Healthy probiotics and essential enzymes are added to help break down the food your pal eats, so dogs and cats alike will benefit from this powerful and healthy probiotic.