Methylphenidate is a CNS stimulant medication that is used for the treatment of attention deficit hyperactivity disorder and it is also used for narcolepsy. It is available under Ritalin, Concerta, Delmosart, Equasym, etc. Modafinil is also a central nervous system stimulant that is available for the treatment of narcolepsy, sleep apnea, and shift work disorder. Its brand name is Provigil. In this article, you will learn about the differences between Modafinil and Methylphenidate and their similarities.