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How Long Does Ritalin Stay In Your System?

Ritalin is a psychostimulant drug used medically for the treatment of attention-deficit/hyperactivity disorder (ADHD) and narcolepsy.  It contains the active ingredient methylphenidate, which functions as a catecholamine reuptake inhibitor, primarily of dopamine (DAT) and norepinephrine (NET) transporters.  This reuptake inhibition (NDRI) facilitates increases in extracellular dopamine and norepinephrine concentrations, thereby substantially enhancing neurophysiological arousal. Upon …

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