Provigil: I have a lot of respect for this drug.

It activates and ONLY activates the part of the brain that allows you to be awake. If you want a high, caffeene does WAY better. It is commonly prescribed for Sleep Disorders and is often only covered by ins companies for such... So beware, can be REALLY Pricey (guessing around 300 bucks a month).

One other thing, you literally feel awake. However, if you are really tired you can still nap (amazing to me). So don't just sit up out of bed take one and go back to sleep and expect you will wake in x amount of minutes all hyper and ready take on the world, LOL