Hi Kristen, we had major problems with mickey and food when he was a kitten. It started when he was almost 6 months old. We never pinpointed the actual allergy, but when eating innova wet and blue buffalo wilderness dry and a daily cooked protein, he threw up daily, beginning in dec 2012 to feb 2013. Poor baby got down to 5 pounds, and vet said stop all prepared foods, and all fresh food and had me transition to boiled ground buffalo.
Buffalo didn't work, he threw it up. Same with lamb. Same with turkey. Out of desperation one night I let him eat some of our roast duck i had made for our dinner (he had eaten it before successfully but we were at the time removing anything he had eaten before).
He kept it down, and after one expensive month for us and a profitable one or d'artagnon, we tried blue buffalo dry duck recipe. He kept it down. About 6 months ago we added in the blue buffalo wet duck recipe. He recovered fully. I consider myself extremely lucky, and I am sending healing thoughts your way for a recovery for zeddie.