I have two cats with severe digestive disorders, and they throw up everything EXCEPT for the California Natural. Of course it's only available in one store in my entire area, but oh well, lol. The vet I had talked to recommended it because there are no additives to it. It's chicken broth, rice, and chicken meal. He said a lot of times the ones made by SD and others for sensitive stomachs have too many additives. My others love the lamb and rice Nutro, and sometimes the sensitive ones eat that as well and they don't have too many issues (I still make them eat the Cal.Natural).