I hope this helps... I am going to have a sleep study done this coming month, because I am ALWAYS tired. I have been on provigil and some days it would work while other days it wouldn't. So right now I am on adderall xr in the mornings and I am to take dexedrine a half hour before I have to pick my husband up from work at 11pm. I do find the adderall does give me some energy and I dont nap on the days I take the medication as long as I am not overly stressed out. Maybe the adderall xl would help you as well. Good Luck

~Dawn