I get sleepiness and insomnia from it. Currently working on solving my insomnia by moving when I take my gabapentin. No headaches from it. I do feel like it has been helpful for me. It lifted me out of depression that's been going on a long time, but I did tilt a bit into hypomania. not sure if lamictal is to blame for that or not. Is your pdoc aware of these issues? They might have something to recommend to help you with sleep. I can't take lamictal in the daytime, when I did that I needed to take a giant morning nap.