seizures
"When I take my dose it makes me more sleepy than usual. It's not everyday, but some days I can be sleepy after 7-9 hours when I have slept enough (approx. 7-8 hours). That's the only side effect I had up to now. So I am ok with it, I guess. Annoying with two tablets 500 mg each day, but oh well better than seizures. That's even worse. Those who had them can feel with me. :)"