I use Lamictal. My pdoc started me out slow. Recently (2 months ago) he put me on an antidepressant be/c I had just gone through a depressive episode. Well, that sent me into a manic phase, so he upped my dose of Lamictal to 400 mgs to counter the effects of the antidepressant, which he feels that I need.
As far as a change, my husband says he feels that my moods have evened out, but it's hard for me to tell personally.
I do know that it takes time for Lamictal to build up in your system. I don't know how long you have been on it or what doasage you are at, but I would definitely talk to my pdoc about it. Hang in there!