Provigil, known generically as modafinil, is a medication prescribed to promote wakefulness in individuals suffering from excessive sleepiness due to conditions such as narcolepsy, obstructive sleep apnea, and shift work sleep disorder. It works by altering neurotransmitters in the brain to increase alertness and reduce the tendency to fall asleep during the day. Unlike traditional stimulants, Provigil has a unique mechanism of action, which contributes to its effectiveness in improving wakefulness without the significant risk of dependency or adverse side effects commonly associated with stimulant medications. It is important for patients to follow their healthcare provider's instructions when using Provigil to ensure its safe and effective use.