Comparative Pharmacology
Head-to-head clinical analysis: GABLOFEN versus METAXALONE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: GABLOFEN versus METAXALONE.
GABLOFEN vs METAXALONE
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.
Metaxalone is a centrally acting muscle relaxant whose exact mechanism is unknown. It is thought to produce skeletal muscle relaxation by depressing the central nervous system (CNS), possibly through general CNS depression or by blocking polysynaptic reflexes in the spinal cord.
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).
800 mg orally 3 to 4 times daily
None Documented
None Documented
Terminal half-life 5-7 hours; clinically relevant for dosing interval of every 6-8 hours.
Clinical Note
moderateMetaxalone + Venlafaxine
"The risk or severity of adverse effects can be increased when Metaxalone is combined with Venlafaxine."
Clinical Note
moderateMetaxalone + Nefazodone
"The risk or severity of adverse effects can be increased when Metaxalone is combined with Nefazodone."
Clinical Note
moderateMetaxalone + Stiripentol
"The risk or severity of adverse effects can be increased when Metaxalone is combined with Stiripentol."
Clinical Note
moderateMetaxalone + Clomipramine
Terminal elimination half-life is approximately 0.5 to 1.5 hours, reflecting rapid clearance and supporting short-lived clinical effects.
Renal: 70-80% unchanged; biliary/fecal: <5% as metabolites. Total clearance 2.5-3.0 L/h.
Primarily renal; approximately 90% of a dose is excreted in urine as glucuronide conjugates and unchanged drug, with less than 1% eliminated in feces via biliary excretion.
Category C
Category A/B
Skeletal Muscle Relaxant
Skeletal Muscle Relaxant
"The risk or severity of adverse effects can be increased when Metaxalone is combined with Clomipramine."