I have never taken brand name of Tegretol or Tegretol XR. I've only ever taken generic carbamazepine ER (the equivalent of Tegretol XR) for the full 7 years I've been on it.. I've never had any fatigue from it at all that I know of, and I take a fairly high dose at 1400 mg (600 mg in the morning and 800 mg at night). If I don't take my Seroquel XR at night I will have trouble falling asleep and staying asleep. Even my 500 mg of Seroquel XR allows me to easily sleep 8 hours per night and wake up normally.

Don't get me wrong, I have in the past had hypersomnia, but I always blamed it either on Seroquel XR and/or depression.