My 8 year old German Shepherd has always had digestive problems and could not tolerate protein. Therefore, our vet had to put him on a prescription dog food diet of "fake protein". Then I noticed as he was getting older that he was getting arthritis, he had anal fistula, and just was not liking his food any longer. After much research I noticed that the dog food I was feeding had NO nutrients in it at all. After consulting with a friend who is a trainer, she suggested I get in touch with a nutritionist at Volhard. We started him on the Digestive Enzymes, Endurance, and Krill Oil. It has not been a month yet and he has shown so much improvement! I am looking forward to the day we can start him out on the Volhard Diet! Thanks Volhard for loving our pets as much as we do!!!!