Topiramate
"My boyfriend of 8 years took this medication for migraine for a year and ahalf. It was great for his migraine but hell on his personality and character as a person. This medication made him confused, unable to make decisions, angry because he was confused. He became argumentative with me , coworkers, and family members. Every task he took on was filled with confusion and his ego. In 8 years I never seen him be so cold ..he was not the same person. I thought his behaviour was cause from some other medicine so I convince him to stop. Then the behaviour continued..after reading on this medicine I convince him to drop it. It had been 3 weeks since he took the medication and it's like night and day.  He is slowly returning to the man I know."