methylphenidate

noun Pharmacology.

1. a central nervous system stimulant, C14H19NO2, used in the control of hyperkinetic syndromes and narcolepsy.

n.

1. A drug chemically related to amphetamine and that acts as a mild stimulant of the central nervous system, used especially in the form of its hydrochloride for the treatment of narcolepsy in adults and hyperkinetic disorders in children.