What is Modvigil? Modvigil is a well-known nootropic used to enhance cognitive function. It contains modafinil, a popular wakefulness-promoting agent. Doctors often prescribe it for conditions like narcolepsy, sleep apnea, and shift work sleep disorder. Many people also use it off-label for improved focus, memory, and productivity. How Modvigil Works Modvigil works by stimulating...