[anonymous]

“Vet switched to Science diet ID Digestive two weeks ago, not much difference”.

Give the prescription food some more time. Continue to work closely with your vet.
After all, he is the veterinary healthcare that has examined your dog and knows his history.

Hope this helps http://skeptvet.com/Blog/2016/07/more-nonsense-from-holistic-vets-about-commercial-therapeutic-diets/