
Modafinil, brand name Provigil, is a wakefulness-promoting drug used for treatment of disorders such as narcolepsy, shift work sleep disorder, and excessive daytime sleepiness associated with obstructive sleep apnea. 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.
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