Optimum Adult Large and Giant Breeds with Chicken, Vegetables and Rice is a complete balanced and nutritionally complete dry food diet for adult large and giant breed dogs aged 2 years and over. This diet has been formulated with chicken, a natural source of glucosamine. Glucosamine helps maintain joint health, which is particularly important for large breeds. This diet is designed with large kibble pieces to help with digestion and dental health. It contians zinc and omega 6 to promote a shinier coat, and arginine and vitamin E to help maintain healthy blood circulation.