you are talking about Provigil. that is the brand name. Its good stuff. i take it every day at 200-300mg per day. It is commonly used for narcolepsy. but perscribed to be for mild ADD and help me stay awake and study all day. i usually get sleepy after lunch, and being pre med I need to study. No side affects like ritalin. no shakes or feeling like you are on speed. I do not think it will help your workouts. it just helps keep you awake and concentrated. It is not very hard to get a doc to write you a script for it, as it is not very controlled. Overall, it is a good medicine, just take it EARLY in the morning because the half life is 15 hours and you will never be able to get to sleep at night if you dont take it early