I find myself possibly needing to switch my 2 year old GSD to a sensitive stomach diet. He has been having some problems with his tummy the past 2 weeks, he has seen a vet and they have him on boiled chicken and rice, a few antibiotics and FortiFlora. Since he was starting to get better the vet told me to start switching back to his kibble (Nutro Ultra), he had that for dinner one night and breakfast the next day, until he got worse again. So he is back on the meds and bland diet. She mentioned I may have just gotten a bad batch of food, but that I should think about switching to a sensitive stomach diet. I want to know what my options are, so can anyone recommend a good kibble to put him on? Thanks!