
Getting ready to duck and dodge here but I'm going to throw some ideas out there for you to consider.
1) Vets are not nutrionists and they get super high margins selling Hills and Royal Canin prescription diets. They are motivated to sell you this high margin, expensive food. But my own vet admitted that she honestly didn't know that to do with my Bacca with elevated liver counts.
2) Diagnosis of "colitisis" seems to be on the increase, based on my experience at my pet store. More and more of my pet parents are reporting that there dogs apparently have this. Personally, I think this might be the "disease du jour". Dogs get into stuff and eat whatever and that becomes colitis? Hmmmm! No that's just a dog that needs monitoring of his chewing habits and his eating. Is this increase a result of poor breeding? What is causing this increase in diagnosis???
3) Food sensitivities are on the increase. Why is that? Are we better than our parents were at being proactive when our pups aren't feeling too good. Or are we too anal? If our pups have a couple of rounds of diahhrea, are we too quick to try to treat, rather than nature take its course???
Despite my questions, I do believe in ensuring your dog has a balanced and perhaps supplemented diet with probiotics and enzymes, etc. There are multitude of products to support digestive issues that are recommendable. That being said, I don't use any of these products myself. I kinda prefer to let nature take its course...and if the food is not agreeing, try a different protein or LID diet.
Just saying....