Provigil is a brand name for the medication modafinil. It is typically prescribed to treat narcolepsy, sleep apnea, and shift work sleep disorder. Modafinil is known for its wakefulness-promoting properties and is often used to help individuals stay awake and alert when they need to be awake during unconventional hours. It's essential to use this medication as prescribed by a healthcare professional and to be aware of potential side effects and interactions with other medications. Provigil comes in two variants: Provigil 100mg and Provigil 200mg.