Will Falconer, DVM Moderator
Hi Denise,
Immune side effects, even potentially fatal ones like you describe, are not uncommon with Apoquel. Why? As you point out, it's like a brake on the immune system. That always comes with a cost, some more immediate, some after some prolonged use.
What to restore your guy to normal? Best I know is to hire a homeopathic vet. Nothing DIY in something chronic like this, especially something risky like autoimmune blood disease. The free report that's mentioned in this article will tell you how to find a good one. All the best to you both.