Comparative Pharmacology
Head-to-head clinical analysis: LIMBITROL DS versus OXAZEPAM.
Peer-Reviewed Evidence
Head-to-head clinical analysis: LIMBITROL DS versus OXAZEPAM.
LIMBITROL DS vs OXAZEPAM
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Limbitrol DS is a combination of amitriptyline (a tricyclic antidepressant) and chlordiazepoxide (a benzodiazepine). Amitriptyline inhibits the reuptake of serotonin and norepinephrine, enhancing neurotransmission in the CNS. Chlordiazepoxide binds to GABA-A receptors, potentiating GABAergic inhibitory effects, leading to anxiolytic and sedative effects.
Binds to GABA-A receptor at benzodiazepine binding site, enhancing Cl- ion conductance and increasing inhibitory neurotransmission. Anxiolytic, sedative, hypnotic, anticonvulsant, and muscle relaxant effects.
1 tablet (amitriptyline 25 mg/chlordiazepoxide 10 mg) orally 3 times daily initially, gradually increasing to 2 tablets orally 3 times daily or 3 tablets orally twice daily if needed; maximum 6 tablets per day.
10-30 mg orally 3-4 times daily; maximum 120 mg/day.
None Documented
None Documented
Clinical Note
moderateOxazepam + Fluticasone propionate
"The risk or severity of adverse effects can be increased when Oxazepam is combined with Fluticasone propionate."
Clinical Note
moderateOxazepam + Sulfisoxazole
"The metabolism of Sulfisoxazole can be decreased when combined with Oxazepam."
Clinical Note
moderateOxazepam + Erythromycin
"The metabolism of Erythromycin can be decreased when combined with Oxazepam."
Clinical Note
moderateOxazepam + Cyclosporine
Chlordiazepoxide: 5-30 hours (parent drug), active metabolite (desmethylchlordiazepoxide) 10-30 hours; amitriptyline: 13-36 hours (parent), nortriptyline (active metabolite) 18-44 hours. Half-lives increase with age and hepatic impairment.
Terminal elimination half-life is 5-15 hours (mean 8 hours); no active metabolites, thus accumulation is minimal even with repeated dosing.
Renal: 70-80% as conjugated metabolites, <5% unchanged; fecal: 10-20% via biliary excretion.
Renal (primarily as glucuronide conjugates, with less than 1% unchanged); biliary/fecal excretion is minimal.
Category C
Category D/X
Benzodiazepine/Tricyclic Antidepressant Combination
Benzodiazepine
"The metabolism of Cyclosporine can be decreased when combined with Oxazepam."