You can visit online pharma stores to buy Provigil online with 50% off. Provigil is a sleeping disorder pill, which is used to improve wakefulness in people who are having extreme sleepiness due to narcolepsy(narcolepsy can be defined as a condition that causes excessive daytime sleepiness), obstructive sleep apnea, or shift work disorder(sleepiness during working hours and find difficulty in falling asleep or staying asleep during sleeping hours). Provigil is a novel wakefulness promoting agent in the treatment of attention-deficit hyperactivity disorder (ADHD) in children and Adults. Provigil has been approved by the FDA(Food and Drug Administration USA). Provigil medicine available in two doses such as Provigil 100 mg and Provigil 200 mg.