one of my dogs has bad allergies too...if it is food that bothers her, i know a really great food for allergies...im not sure what its called, but its made by petsfirst and its wonderful...for my dog it costs 60 dollars but it lasts six months....for a smaller dog it would cost a bit less and last a bit less...it has no corn flour (thats what most dogs are allergic to and it makes them fat...its also usually the main ingredient ) and it had real meat and veggies in it...its very good