Does what affect my memory??? It's hard to isolate one factor, but I'm on 400mg per day & I've noticed memory problems & trouble concentrating. My pdoc says lithium is the gold standard for mood stabilizers, but the blood tests & other issues led me to the conclusion that I should pass. Without a mood stabilizer, I'm convinced I'd be a bigger mess than I already am, though. I guess it's one of those things where you have to pick your poison.