Provigil is a highly effective and reliable medication for successful treatment of all kinds and forms of excessive sleepiness, narcolepsy, obstructive sleep apnea or hypopnea syndrome, idiopathic hypersomnia, shift work sleep disorder, attention deficit hyperactivity disorder (ADHD) and other.

Potentially Provigil also works effectively for a few other disorders of other kind such as mood disorders (depression, Parkinson’s disease and other), depersonalization disorder and other. However the effectiveness wasn’t proved clinically.