I take 40-60 mg of Adderall XR, and it makes my energy level manageable. I still get tired, but the goal is to make it the whole 8 hours at work. That's after making sure I get 8-9 hours of sleep at night. I also take 50 mcg of synthroid for my thyroid. Have you had your thyroid checked lately?

Also, if your contemplating an AD, I think Welbutrin can help with the sleepiness. But don't quote me on it.