Modvigil 200 mg, also known as Modafinil, is commonly prescribed for the treatment of narcolepsy. It is a medication that helps individuals with narcolepsy manage excessive daytime sleepiness and sudden attacks of sleep. Modafinil works by affecting certain chemicals in the brain to promote wakefulness. When taken as directed by a healthcare professional, Modvigil 200 can significantly improve the quality of life for those suffering from narcolepsy.