Thanks everyone for your responses! I tried Adderall and was up ALL night, it was awful! It was the IR release though and not the XR. The Nuvigil has completely stopped working....I can take it and fall asleep a few hours later with no problem. I am going to take a break from it for a while and see if that helps.
I also think the diet suggestions are good: I do notice I am sleepy after lunch.
Anyone have natural supplements that help?
Mamabee, I had the same problem with Adderall when I first started taking it. This lasted for l less than a week. Since that time, I have only had that problem if my dose has been increased, or if I have taken it too late in the day (like after noon).