Here’s the problem, some dogs with chronic diarrhea need more fiber in their food, while others need just the opposite, so you may have to experiment on your dog to see what works for him. You could try adding some pure canned pumpkin to his meals and see if the added fiber helps or you could try a supplement like The Honest Kitchen’s Perfect Form. If neither of those help, you could go the other way and try a high protein, moderate fat food. Either way, I would add digestive enzymes and a good probiotic to his diet until you get this worked out.
What breed is he?
