Provigil is a medication used to treat sleeping disorders, such as narcolepsy, obstructive sleep apnea, and shift work sleep disorder. Buy Provigil Online belongs to the class of drugs known as ADHD drugs, Which means promotes wakefulness and alertness. Provigil is used for the treatment of ADHD. It is important to take Provigil as prescribed by your doctor and to follow all instructions carefully. Common side effects of Provigil may include headache, nausea, nervousness, and insomnia. If you experience serious side effects using this medication, please consult your doctor. Provigil comes in two variants: Provigil 100mg and Provigil 200mg.