I take 150mg of Lamictal twice a day and I really can't say either way if it helps that much or not. I can say that I never noticed any side effects from it at all so if it's not doing anything good at least it's not doing anything bad. As far as rapid cycling goes I swing from depression to mania every few weeks or so. I find my manic episodes to be exhausting from dealing with my spontaneous spending and the damage control for how I've behaved. It's better then it was when I wasn't medicated.