He's only on the Metronidazole and Prednisone right now. He was on Metronidazole before for about 5 days...it seemed to help the first three days, but after that we had problems again. Last night we also gave him one dose of Drontal (the vet only gave us one dose), along with the Metronidazole and Prednisone. Sounds to me like she might be grasping for straws at this point...