Buy Provigil Online, is a prescription medicine used to treat daytime sleepiness in adults. Although it is formally approved by the United States Food and Drug Administration (FDA) for the treatment of conditions such as narcolepsy, obstructive sleep apnea or shift work disorder, it is now often prescribed off-label for a wide range of uses. Many users of Provigil report increased focus, concentration, and productivity. It is a tablet with different variants available: Provigil 100mg and Provigil 200mg. It is sold under the brand name Modafinil in the market.