Growth is an essential stage in your dog`s life: it is the time of big changes, discoveries and new encounters. During this key period, your puppy`s immune system develops gradually. ROYAL CANIN German Shepherd Puppy Food helps support your puppy`s natural defences, thanks particularly to a patented complex of antioxidants – including the essential vitamin E. ROYAL CANIN German Shepherd Puppy Food contains an exclusive combination of nutrients that help to support optimal digestive health.