Provigil is a medication used to promote wakefulness and cognitive enhancement by acting on certain brain chemicals. It contains Modafinil, a stimulant that is commonly prescribed for conditions like narcolepsy, obstructive sleep apnea, and shift work sleep disorder. It is important to note that Provigil is not a cure-all solution for cognitive enhancement, although it can help improve concentration and alertness. Some researchers have found that data retention did improve in a few cases, but not in all of them. The best and most natural cognitive enhancer is sleep.