Re: stopping seizure meds and weight gain
Topa can cause weight loss. Don't think the FDA ever approved the drug for that use, but some people were using it "off label" for that.
For me, it caused a loss of appetite after I reached 300mg/day. So YES I think not being on the medication could have caused that.
Be careful when you get back on it. Don't go full dose all at once or you may have signifigant side effects...least thats my opinion.