I did get a slight boost in energy in my first few weeks of taking it, but the energy faded away fairly quickly. I was also coming out of a depression, though.

For me, it's neither sedating nor activating.

No, but I do know that lamotrigine can do weird things to your skin besides the SJS thing. Sometimes the effects go away on their own; other times they don't. You can see a dermatologist for medication to counteract the effect if you really want.