I think Shades has a flea allergy resulting in a staph infection. He gets this infection yearly, so iit may not be fleas but just something in the air/environment.
Anyway, the last time he had it, I was given a bottle of Bactrim (sulfa) with instructions given 1/2 pill 2x a day.
Since I have a lot leftover from the last time, can i just do this again without taking him in to the vet?
I'm also considering starting him on Atopica for when he has allergies (not year round). When he's on benadryl, he takes 75mg twice a day for some relief but not much.