I was taking 300mg of Lamictal for a few years, and there were some nights where I would feel restless and unable to fall asleep. I never attributed it to that med, but I haven't had that problem since I decreased. I also have an easier time falling asleep. I was trying different sleeping pills that would be helpful for me, and Lunesta worked the best for me, as long as I got past the terrible taste it left in my mouth.