Purina Dog Chow Review

Our now 3yo boxer was doing pretty well on Purina One fromula dog chow until he was diagnosed last year with ostioarthitis. The vet put him on Purina's JM dog chow (a perscription formaula) which seemed to work great for him. We saw loads of improvement in his overall demenor and mobility! However, that food cost $80+ a bag. Coupled with other suplements and medications he's taking, we couldn't afford to continue that diet. So we opted for Purina's Dog Chow formula for its affordability and the fact that, like the perscrition diet, it is also labeled 'complete and balanced'. He has been on the food for 4 months now with DISASTEROUS results!!! His hair is falling out, he suffers from constant skin, ear, and eye infections, his nail quality is deplorable, he's back to limping and being depressed, and he smells awful. He never had anything but a mild odor before that was warm and appealing. But now his breath smells like he eats feces, and his body radiates this undescribable stench! Not to mention the constant scratching, and feet chewing that he's never done before.  

He looks, acts and smells ill....We are currently in the process of changing his diet again in the hopes of eliminating the compounding health concerns.