i was on a good/stable dose (at the time; 100mg) until i stopped for a couple of months due to insurance issues. i had to restart at 25 mg 1 1/2 months ago and i'll be back to 100 by monday.
i was in a baaad mixed state this past week and half; i'm thinking it might have to do with the lamictal (partly), but i'm not completely sure.

hopefully when u get to ur therapeutic dose you'll feel better