bipolar disorde
"I started taking gabapentin experimentally to treat chronic depression and am now prescribed 1800mg a day.  At doses of 2700mg I experienced a significant improvement in impulse control and depression in general.  Went from being a shut in, to going for walks and enjoying my time in the company of others.  At the lower dose of 1800mg a day, I don't experience much improvement, save for a decrease in depressive symptoms.  I'm looking forward to a larger dose if my doctor okays it."