Comparative Pharmacology
Head-to-head clinical analysis: FOCALIN XR versus PEMOLINE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: FOCALIN XR versus PEMOLINE.
FOCALIN XR vs PEMOLINE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Focalin XR (dexmethylphenidate) is a central nervous system stimulant. It blocks the reuptake of norepinephrine and dopamine into presynaptic neurons, increasing their concentrations in the synaptic cleft. The d-threo enantiomer is pharmacologically active.
Pemoline is a central nervous system stimulant that enhances dopaminergic and noradrenergic transmission by blocking the reuptake of dopamine and norepinephrine at the synaptic cleft. It also has mild monoamine oxidase inhibitory activity.
Initial 20 mg orally once daily; may increase in 10-20 mg increments at weekly intervals; maximum 60 mg/day.
Oral, 37.5 mg once daily in the morning; may increase by 18.75 mg weekly to a maximum of 112.5 mg/day (divided into 2 doses if total dose > 75 mg).
None Documented
None Documented
Terminal half-life: 2-3 hours for immediate-release; 6-8 hours for extended-release (FOCALIN XR)
Terminal elimination half-life is 8-12 hours in children; 12-16 hours in adults. Steady-state is reached within 2-3 days.
Renal (approximately 90% as unchanged drug and metabolites)
Pemoline is primarily excreted renally as unchanged drug (40-50%) and metabolites; approximately 20-30% is excreted in feces via biliary elimination.
Category C
Category C
CNS Stimulant
CNS Stimulant