What are the effects of provigil on narcolepsy?

Wakefulness: Modafinil is classified as a somnolytic, and promotes alertness and wakefulness through selective activation of wake and sleep centers in the central nervous system. The fda has approved its use in nacrolepsy, adjunctive treatment of excessive daytime sleepiness associated with obstructive sleep apnea, and shift-work sleep disorder. Off-label, it's used for adhd and adjectively for depression.

Improves wakefulness: Provigil is a wake-promoting medication (classified as a stiumlant) that helps patients with the daytime sleepiness associated with narcolepsy (and with sleep apnea and shift workers). It does not cure narcolepsy - rather, it helps treat one of the cardinal symptoms of the disorder.