This may sound puzzling given what I said before, but when I had been taking it at night it kept me up all night. I week or so ago I changed it to morning with no problem. My problem that I notice with Lamictal is an unusually depressive reluctance to get out of bed after numerous hours of sleep. But I'm not depressive once I'm awake since I started it.
I have to admit now I've had problems with the timing and duration of my sleep for 5-7 years now. I erratically stay up all night some nights and go right to sleep other nights and sleep all day some days. I've tried online CBT for insomnia and I re-started Trazodone last year. The online CBT didn't work, the Trazodone does work about 50% of nights. But it's not the Trazodone in the morning. Trazodone doesn't affect me when I wake up, I'm very familiar with Trazodone.