Thank You. I've been through this every year with him. It's his allergies. I just dosed him with 100 mg. of benadryl and he is much better. When I take him to the vet, he just gets a shot of prednisone which I can't afford to do right now, so I'll stick with the benadryl but if he doesn't get better or gets worse I will take him in. I will not use the Zyrtec. ALso, I've used Mini Noses nasal spray, kid stuff, and that lasts about four hours. It helps.