Charlie's Choice ProBio Plus for Cats and Dogs Formulated with the guidance of Katy Nelson, DVM with 7 highly effective strains of beneficial bacteria along with prebiotics Featuring a potent 2.7 billion CFU count of friendly bacteria in each natural cheese flavored soft chew Enhanced with fructoogliosaccharides, which are prebiotics that act as food for the friendly bacteria and help to promote their grow Supports a balanced inner ecosystem for optimal digestive health and an optimally functioning immune system in both cats and dogs Made in an FDA inspected facility to meet the stringent standards of US Pharmacopeia for quality, purity, potency and disintegration