Buy Provigil Online, from Careskit , the pharmaceutical sites present online in the USA, and get the medication delivered right at your doorstep no need to go anywhere else. Provigil 100 mg or 200 mg is a prescription medicine used in the treatment of excessive daytime sleepiness and narcolepsy. This medicine modulates the level of chemical messengers in the brain and exerts a stimulant effect to reduce extreme sleepiness. Modafinil is a medication that promotes wakefulness.