OnLamictal for 4 weeks for mood stabalization. Noticed with increasing alarm, any thing from short term memory problems to blanking out a phone message I left a friend, and then next day, apparently left same message. Serious memory deficites, I would liken to early stage Altzheimer's disease. Had graduated up to 50mg per day. In hind site, mental disturbance must have started while still on 25mg. Very frightening and humiliating experience. Had serious affects on my daily life and job. Off med. now, and was told it would take 10 plus days for side affects to diminish.