Yes- came from my doc. I've worked nights for 12 years and was just on a four month leave due to a break down. I return to work on Sunday and these should help me focus all night. It's almost like ADD meds, but it is not supposed to have any of the anxiety type side effects. There actually is a syndrome called shift workers syndrome for those who do not work typical schedules. I don't have that syndrome, but my doc thought taking these temporarily would help me re-adjust to working all night. The med is called Nuvigil