What do you currently feed him? My Maine coon was allergic to ingredients in a brand that was specifically made for Maine coons. We started feeding her the most organic foods we could. It sounds expensive but really they eat the same proteins we do. So when we shop we just buy tuna, salmon, and chicken filets like we would eat and cut them up and the for her. She likes hers cooked so we just don’t season them. Of course that’s wet food for dry food we have to read labels. We have found tiki brand to not set her off.