seizures
"I first took it in 1984 as part of the study.  It was so, so, didn't work sufficiently and the epileptologist took me off of it for fear of kidney stones impacting a teenager.  When having major problems with Onfi and having tried 25+ meds over the past 41+ years I thought I'd see if Zonegran was improved.  A physician at Georgetown University in DC failed, like FDA, to proved information stating that the med can make a person who has had trauma and/or brain surgery go into orbit.  It controlled seizures a few months, made me do impulsive things like request retirement from a position paying over $104k/year.  It made me hostile, nervous, go nuts, and elevated my Dilantin level, caused gingival hyperplasia so my teeth are painful and ruined."