Comparative Pharmacology
Head-to-head clinical analysis: GABLOFEN versus OZOBAX.
Peer-Reviewed Evidence
Head-to-head clinical analysis: GABLOFEN versus OZOBAX.
GABLOFEN vs OZOBAX
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
GABLOFEN (baclofen) is a GABA-B receptor agonist that reduces spinal reflex transmission and inhibits excitatory neurotransmitter release.
OZOBAX (carisoprodol) is a centrally acting skeletal muscle relaxant that does not directly relax skeletal muscle. Its mechanism of action is thought to be related to its sedative properties and its metabolite, meprobamate, which has anxiolytic and sedative effects. Carisoprodol acts as a GABA-A receptor agonist and may also inhibit interneuronal activity in the spinal cord and reticular formation.
10 mg orally three times daily, may increase by 10 mg/day every 3 days to a maximum of 80 mg/day (20 mg four times daily).
OZOBAX (baclofen) oral: Initial 5 mg three times daily, may increase by 5 mg per dose every 3 days to max 80 mg/day (20 mg four times daily). Intrathecal: Test dose 50-100 mcg, then continuous infusion via pump 22-900 mcg/day.
None Documented
None Documented
Terminal half-life 5-7 hours; clinically relevant for dosing interval of every 6-8 hours.
Terminal elimination half-life is approximately 12-15 hours in adults with normal renal function. This supports twice-daily dosing in most patients.
Renal: 70-80% unchanged; biliary/fecal: <5% as metabolites. Total clearance 2.5-3.0 L/h.
Primarily renal excretion of unchanged drug (approximately 70-80% of the dose) with minor biliary/fecal elimination (10-15%).
Category C
Category C
Skeletal Muscle Relaxant
Skeletal Muscle Relaxant