seizures
"This is one of the worst AEDs I've tried over the past 41+ years since surviving Reyes.  It caused hostility, agitation, nervousness, restless legs syndrome, suicidal thoughts, and made me so impulsive that I requested an early retirement from a position paying about $104k per year.  I probably would have not gone for retirement if the effects of the med had not been there.  To top things off it gave me gingival hyperplasia so my front teeth are ruined, gum overgrowth is worse than it has been while on any of the other 24 meds I've been given.  Intractable epilepsy is tough but this med might help persons who haven't had trauma or brain surgery.  FDA and the maker FAILED to warn me about this.  I got off of it."