I am at a loss reading these reviews because my daughter has experienced more headaches than ever on it. She has vertigo, blurred vision and restlessness. She has experience fevers out of nowhere as well and when that happens she feels muscle weakness. After speaking to her neuro, they said we have to just stick with it and that's all very common... no one here is saying these are common side effects so I don't know what to think. It has been 2 months and while she is not having seizures anymore, she is getting migraines to the point where she can't stand up. We were told this medication treated both seizures and migraines so we are confused about what's going on.