it will do it some good, most puppy food is just higher in protein. alot of people worry about what they give their dogs, but dogs in the wild eat what they can when they can. I feed my dogs a lot of leftovers and they look great. they also do not have sensitive stomachs because they are used to a changing diet from an early age. if you want to stick with dog food however, purina is not very good and for the same money you can get dog food called chicken soup for the dog lovers soul. it is maybe 5 bucks more but well worth it when you look at the ingredients.plus youll feed less.