The Royal Canin Veterinary Diet Gastrointestinal Fiber Response Dry Cat Food is designed to promote digestive health and optimal stool quality with highly digestible proteins and prebiotics. This cat food is enriched with a blend of soluble and insoluble fibers for healthy transit through the GI tract. The Royal Canin Veterinary Diet Gastrointestinal Fiber Response Dry Cat Food supports urinary health with the exclusive S/O Index, which creates an environment unfavorable to crystal formation in the bladder.