Hi Melissa-
Hypoallergenic dog foods do not exist. Not even the prescription diets are allowed to make the claim of being hypoallergenic because it is individual to the dog. It sounds like your dog needs to have a food trial done to diagnois the food allergies and then you and your vet need to work together to come up with a food that will work for the allergies and the colitis.
I think it is important to take things said over the internet about vet’s with a grain of salt. Your vet is actually trying to help you believe it or not. And there is a much better reason for them recommending the presciption diets for such severe symptoms than money. It’s because these diets do in fact work.
