Hi blueoctober! I take my Lamictal in two doses (am/pm). When I had a p-doc, she said she'd found that it tended to work better that way. I don't remember being dizzy and/or tired (but that doesn't necessarily mean I didn't experience any, it's just that being at the 5 week point like you are, was awhile ago, and memory simply doesn't serve. I *do* remember having a bit of a light headache and a bit of muscle soreness, but they were pretty minor and lasted only a very few days.