dexmethylphenidate

noun

dex·​meth·​yl·​phen·​i·​date ˌdeks-ˌmeth-əl-ˈfen-ə-ˌdāt 

: a mild stimulant of the central nervous system C₁₄H₁₉NO₂·HCl that is administered orally to treat attention deficit hyperactivity disorder

Note: Dexmethylphenidate is the dextrorotatory enantiomer of methylphenidate. It is marketed under the trademark Focalin.