Hill's Prescription Diet r/d Feline Weight Loss - Low Calorie - 8.5lb Clinically proven nutrition to reduce body fat by 20% in just 3 months (dry only) Low fat and high fiber decrease caloric intake, which helps reduce body fat High natural fiber levels satisfy pets while losing weight High levels of carnitine to help burn fat while maintaining lean muscle mass Delicious taste for easy transition from your cat's current food