Hi Josh, Origen Large Breed Puppy is on the Editor’s Choice list for large breeds. So Ca/Ph levels should be good. However, it is a very expensive food and from what I have read on some other sites, many pups find this food too rich and have tummy troubles. You can try it and see how your puppy does. But there are a number of other foods out there that are less expensive and still very good. Purina ProPlan and Fromms are both good. And mixing some canned to keep him eating will help him transition.
