I have completely taken away all corn, wheat, soy, and animal proteins. He seems to be healing and not chewing as much. Does anyone have experience with this? How long before I know that this food is working? I've read it can take 6-8 weeks before you really know? Is that true? I use topical creams and have given him a benedryl a couple of times. My poor little man, his name is Rebel by the way. The guy is the photo.
Before I got my pup Pascal I did a lot of research on pet foods. Mainly because our first Sheltie died due to blader cancer and his diet! I fell in love with the Sheltie's and knew I would get another but wanted to do things better for this pup. Long story short I decided on this for our pup:

http://www.darwinsnaturalpet.com/index.html

One of the claims is that it helps with allergies, you might want to check it out. Pascal loves it and although it's a bit pricey for the overall health benefits I think you'll find it to even out with less vet bills!

Give your Rebel a big hug for me he's got to be rather miserable I hope you find a suitable solution for him.