Provigil is a prescribed medication used for the treatment of sleep disorders like narcolepsy, sleep apnea, or shift work sleep disorder in adults. Modafinil is the active ingredient in Provigil, which alters the levels of certain chemicals in the brain that regulate wakefulness and sleep. Most people who take it tolerate it well, and it is available in varying strengths. It should only be taken as directed by a healthcare professional, and a prescription is required.
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