I have 2 allergy sufferers. For Marcel, we did allergy shots and treatment - and after about 4 vials, gave up on that. It did nothing for him.
But both Atopica and Apoquel are miracle drugs for him, so that's what we've stuck with.
Make sure your dog food doesn't have corn or grains in it! I'm sure you've already done that...a long time ago though

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