Personally, I think that every dog is different and what works for one may not necessarily work for another. It's trial and error to find something that works for your dog, and the reason for the sensitive stomach plays a part as well. My yorkie has IBD. He didn't do well on any of the RX diets we tried, and also didn't do well on most commercial foods. Our vet wanted him on a novel protein, and we finally switched him to Primal frozen lamb patties. He does awesome on that food and hasn't had a flare of his IBD in months. But it is also not a diet that is typically suggested for IBD. It just happens to work for him.
Diana |