Go to skeptvet dot com and use the search engine to look up glucosamine
Pro Plan sensitive is a good food and often recommended by veterinarians.
Zignature is a quality kibble, grain free, potato free. My dogs do well on the Whitefish (lowest sodium content of all the Zignatures) I would add a splash of water and a bite of real food.
I might want to avoid potato/sweet potato, hard to digest for some dogs
Ps: I would listen to the advice of a veterinarian that has examined your dog over someone that works at the pet supply store. I know they mean well, just saying.
