PURINA PRO PLAN DOG Medium Puppy Sensitive Skin with OPTIDERMAis a dry dog food created specifically for the needs of puppies who have sensitive skin, as well as gestating or lactating bitches. This nutritionally balanced puppy food contains OPTIDERMA, a combination of specific nutrients at levels that are appropriate to your puppy's age and medium size. They are clinically proven to help support healthy skin and promote your puppy'shealthy coat. Our recipe also contains nutrients that help support healthy joints for their active lifestyle, and also promote a healthy immune system so they are ready to face whatever the world throws at them. Our recipe contains sources of protein which help reduce possible skin discomfort associated with food sensitivty. If your medium puppy has sensitive skin, try this complete dry puppy food today.