Provigil (modafinil) is a medication that promotes wakefulness. It is thought to work by altering the natural chemicals (neurotransmitters) in the brain.
Provigil is used to treat excessive sleepiness caused by sleep apnea, narcolepsy, or shift work sleep disorder.
Provigil may also be used for other purposes.
I work in the hospital and i know couple docs take it to stay awake/concentrate better or when they come off the shifts. I have very bad exhaustion and no concentration, bad fog. So i take adderall which is a stimulant. I take 20 mg extended release in the morning and then 5-10 mg in the afternoon because otherwise i crash. If i dont take it i can barely function, i cant even read...
It is something to look into if you have exhaustion on daily basis like me. Read some more about provigil and adderall on google