We have a retriever mix (70 lbs) that was having grand mal seizures that started at about 3 years of age. He had about a dozen seizures between 3 and 4 years that were about 8 weeks apart at first but got more frequent and severe until they were about every 2 weeks.
We decided to try the Keppra generic which we purchased from a licensed canadian pharmacy. He has been on the Keppra for almost 3 years now and has not had a seizure since 3 days after starting the medicine. He doesn't appear to have had any bad side effects and is in good health. He takes (2) 500mg pills/day (1 ea morning and night). The cost is averaging 70 cents/pill.