Hi Charles-
Dogs only react to protein, not fat, carbs, vitamins or minerals. All of the ingredients mentioned above are either vitamins or minerals, so it is not possible for your dog to react to them as they contain no protein.
It is very possible that your dog has no food sensitivities at all and that the only issue is his environment. Has your vet mentioned doing an elimination diet for your dog? This is the golden standard for assessing food allergies, but it is challenging to do correctly. If you are interested in knowing more about how this works let me know and I’d be happy to explain.
