Modafinil (Provigil) is a memory-improving and mood-brightening psycho-stimulant (or eurogenic) that works by increasing the amounts of naturally occurring chemicals in the area of the brain that controls sleep and wakefulness.Modafinil belongs to a class of medications called wakefulness promoting agents.Modafinil is used to treat excessive daytime sleepiness caused by Narcolepsy or Shift Work Sleep Disorder (SWSD).
