I take 200mg in am and 200mg I'm pm. 400mg a day is the highest dose you can take so my pdoc says. I've had no side effects and I've been on this dose for 10 years. In addition I take an anti psychotic and am ad. The geodon...the ap...makes the lamictal work better and keeps me out of hypo mania. Maybe talk to yr pdoc about increasing it? Hope I've helped you. I wish you luck.

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