The central nervous system stimulant Vilafinil is well-known for its usage as a wakefulness-inducing drug. People often use it as a cognitive enhancer to help them concentrate better at work or school, but doctors rarely prescribe it for this use because it is not considered a medical purpose. It belongs to a class of drugs known as nootropics and is typically used to treat several conditions, including narcolepsy and ADHD. Vilafinil for sale at Smartfinil.