I took it for about three months. It capped any mania I had but unfortunately kept me in a depression that fluctuated between being mild and severe. When I was on 15mg I had a "slowing down" side effect where I would speak and react robotically and slowly. That went away when I went down to 10mg.
All in all it did not work for me. I feel much better now that I'm off of it. Also cost was a factor for m because of how my insurance works. It was $650 a month