I am on 300 mg of Lamictal along with other stuff and I have problems with my memory like not knowing if something actually happened or I just thought of it or if I dreamed it. I also have a big problem coming up with the words I am looking for. I can explain the word but can't think of it. But one of my doctors told me my memory loss was also due to my thyroid disease - or now lack of a thyroid. I don't know. I figure I am just getting older (I am 48) and it is to be expected.