My dog Dazee has problems with allergies that cause her to chew, lose hair, and get sick. After treating her with cortisone shots, not only was it becoming expensive to visit the vet, she refused to eat the expensive foods we bought. Then this past January, she was in really bad shape. I had recently started eating yogurt a lot and it was helping me with my digestive system. I thought, well, I will try yogurt on her food.
Hi, my dog had a similar problem. I gave her some cortisol tablets, stopped her old food. Now she has a hypoallergenic food, James well-beloved, not sure if you can get in the U.S, as I live in the U.K, but I'm sure you can find similar, now I give her a few cortisol tablets in the summer and she's completely fine.
Unfortunately many dogs develop allergies to commercial dog foods. Low ingredient foods sometimes help, but if not, pet owners often try to provide homemade food. This is a page about recipes for a dog with allergies.
If you are looking for a good quality grain free dog food, Taste of the Wild is a respected and trustworthy brand. Sometimes the best deals can be found online. This is a great deal for a 30lb bag of high quality dog food.