I’d suggesting trying a limited ingredient food other than what the vet is offering first. The products you’re feeding now aren’t single sources of protein and have lots of potential allergens. Food intolerances are tricky. Sometimes you have to dig deeper in the list of ingredients to figure out what is the actual problem. It’s taken a long time for me to figure out that my dog cannot only not have any form of fish, but he also cannot have garlic, tomato, flax, chickpeas, lentil and I’ve just added barley to the list.
The only way to figure out what those intolerances are is to do a true elimination diet. Allergy tests are notoriously unreliable and give both false positives and false negatives.
The limited ingredient diet that I’ve had the best luck with, by far, is Nature’s Variety Instinct LID. Choose a protein that your dog hasn’t eaten before. As long as he can handle that, peas, tapioca and canola oil, you should be good. Wellness Simple has too many problem ingredients in it (fish) that my dog doesn’t tolerate, so I was never able to use it. It’s a good product though, and worth a shot. I’d prefer it over Royal Canin and Science Diet any day.
