Comparative Pharmacology
Head-to-head clinical analysis: DYANAVEL XR 15 versus FOCALIN XR.
Peer-Reviewed Evidence
Head-to-head clinical analysis: DYANAVEL XR 15 versus FOCALIN XR.
DYANAVEL XR 15 vs FOCALIN XR
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Dyanavel XR contains amphetamine, which is a central nervous system stimulant that increases synaptic concentrations of dopamine and norepinephrine by inhibiting their reuptake and promoting their release from presynaptic terminals.
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.
1-3 capsules orally once daily in the morning. Each capsule contains 15 mg of amphetamine (equivalent to 15 mg dextroamphetamine/amphetamine).
Initial 20 mg orally once daily; may increase in 10-20 mg increments at weekly intervals; maximum 60 mg/day.
None Documented
None Documented
Terminal elimination half-life: amphetamine (d-isomer) 9-11 hours, l-isomer 11-14 hours; allows for once-daily dosing in extended-release formulation
Terminal half-life: 2-3 hours for immediate-release; 6-8 hours for extended-release (FOCALIN XR)
Renal (80-90% as unchanged drug and metabolites, primarily dehydro-amphetamine); fecal excretion minimal (<5%)
Renal (approximately 90% as unchanged drug and metabolites)
Category C
Category C
CNS Stimulant
CNS Stimulant