I have been on Lithium since September, I think. It hasn't done much for me-- I sort of went on it by "accident" as I switched pdocs and ended up with a really %#@&#! pdoc. I went back to my regular pdoc who decided he may as well keep me on it and see how it works. The thing is, Lithium is not known for stabilizing rapid cycling very well and I am a very rapid cycler-- in fact, a lot of my mood swings don't even come from the mood disorder spectrum; rather from the personality disorder spectrum. I'm probably going to be changing soon, but I need to wait 3 weeks until school is over before I make changes. I have seen Lithium be VERY sucessful, particularly for those with BP I.