It contains a patented complex of antioxidants, including the highly beneficial vitamin E to support your puppy's natural defences while its immune system is immature and still developing. The combination of nutrients that contain high quality protein (such as L.I.P., known for its very high digestibility) as well as prebiotics like FOS help to support your puppy's digestive health. What’s more, Royal Canin Maxi Puppy contains a moderate energy level to meet your puppy's energy needs for a long growth period of large breed puppies.