My dog started having seizures a couple months ago, and it was determined it was idiopathic epilepsy and phenobarbital was prescribed. She did fantastic on it for a month and a half then started seizing again, and they have become more frequent the past few weeks. The vet increased her dosage by half tablet a couple weeks ago, but she still keeps having seizures (lasting about a minute or so) and lately, they've been accompanied by temporary blindness, disorientation, hiding in tight spaces and pacing. Just started potassium bromide yesterday, but it could take 3-4 months to get regulated in her system. No one can seem to explain how the phenobarb would work for a month and a half and then the seizures return. Has this ever happened where the meds seem to be working and then, suddenly, they're not effective? Please help! We both need some rest!