My vet dermatologist told me that there is a new allergy drug being released this fall and she expects to have it by November. My 9-year-old allergy boy is on her list to receive it. She thinks most vet practices will be able to get the drug by the new year. She was very excited by it. You might want to alert your vet.
I understand your frustrations regarding the allergies. We have spent a fortune keeping our boy as comfortable as we can. He gets allergy shots every 10 days, and is currently on Temeril P every other day until the cold weather arrives.