Hill's Prescription Diet k/d Canine is properly formulated diet that helps in improving the kidney function that helps in maintaining proper fluids and detoxification of blood. It contains high level of amino acids and L-Carnitine which helps in building strong muscles. Hill's Prescription Diet k/d Canine contains S+OXSHIELDTM that reduces the risk of developing struvite & calcium oxalate crystals. It supports healthy kidney and heart functions and also contains Omega 3 which promotes healthy skin.