Hill's Prescription Diet j/d Canine is an innovative dog food that helps maintain healthy joints and improves mobility in dogs. Its unique formula contains high levels of EPA (Eicosapentanoic Acid), an Omega-3 fatty acid found in high concentrations in fish oil. Research has shown that EPA can help maintain joint function. Enhanced levels of glucosamine and chondroitin provide the building blocks of healthy cartilage, and L-carnitine helps maintain optimum body weight. Prescription Diet j/d Canine improves the quality of life by helping dogs run better, play better, and rise more easily.