Well, when I got Lamictal, plus my Keppra, which I've been taking a LONG time, I did feel very tired. Usually, I would nap two hours in the afternoons and be asleep by nine thirty, when I started to take both, although it turned out I had sleep apnea, and the Lamictal was making me need more sleep.
When I feel tired, I just usually stay by myself, turn off all my lights, and stay awake in the dark.