Comparative Pharmacology
Head-to-head clinical analysis: METADATE CD versus METHYLIN ER.
Peer-Reviewed Evidence
Head-to-head clinical analysis: METADATE CD versus METHYLIN ER.
METADATE CD vs METHYLIN ER
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Methylphenidate is a central nervous system (CNS) stimulant. It blocks the reuptake of norepinephrine and dopamine into the presynaptic neuron, increasing their levels in the extraneuronal space. The precise mechanism for treating ADHD is not fully understood.
Methylphenidate is a central nervous system stimulant that blocks the reuptake of dopamine and norepinephrine into presynaptic neurons, increasing their availability in the synaptic cleft.
20-60 mg orally once daily in the morning
20-60 mg orally once daily in the morning
None Documented
None Documented
Terminal elimination half-life: 6.8 hours (range 4.5-10.3 hours) for methylphenidate; clinical context: supports twice-daily dosing regimen
Mean 3-6 hours in adults; longer in children (4-8 hours). Clinical context: steady-state reached within 2 days; dosing every 8-12 hours.
Renal: 78-97% as metabolites (primarily ritalinic acid), unchanged drug <1%; fecal: <2%
Renal (90% as metabolites, <1% unchanged). Biliary/fecal: <2%.
Category C
Category C
CNS Stimulant
CNS Stimulant