You may need to read it again. Ritalin LA contain the active ingredient methylphenidate hydrochloride. Methylphenidate hydrochloride is a central nervous system stimulant. Ritalin LA (long-acting ...
Methylphenidate HCl 10mg, 20mg; ext-rel tabs. The mechanism of action of methylphenidate is not completely understood, but it presumably activates the brain stem arousal system and cortex to ...