Well for me I have been on it for years. But I am diagnosed as Bipolar 1 so it may vary from case to case. It really helped me with the delusions that I was suffering through the mania. I do feel stiff sometimes, but its a small price to pay for feeling better. Sleep can be difficult but I am also taking Klonopin to help with that.

It is one of the oldest medications out there and it is still effective. See how it works for you because I have been on it for almost ten years and it has helped keep me stable.