Comparative Pharmacology
Head-to-head clinical analysis: CLOBAZAM versus LIMBITROL.
Peer-Reviewed Evidence
Head-to-head clinical analysis: CLOBAZAM versus LIMBITROL.
CLOBAZAM vs LIMBITROL
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Clobazam is a benzodiazepine that enhances the effect of GABA at the GABA-A receptor, increasing chloride ion conductance and neuronal hyperpolarization. It has a high affinity for the α2 subunit, which may contribute to its anticonvulsant effects.
Limbitrol is a combination of chlordiazepoxide (a benzodiazepine) and amitriptyline (a tricyclic antidepressant). Chlordiazepoxide enhances GABA-A receptor activity, producing anxiolytic and sedative effects. Amitriptyline inhibits serotonin and norepinephrine reuptake, elevating mood and reducing pain. The combination is used for depression with anxiety.
10-60 mg orally once daily, divided into two doses. Typical starting dose: 10 mg twice daily.
1-2 tablets (5 mg chlordiazepoxide / 12.5 mg amitriptyline per tablet) orally 3-4 times daily. Maximum 6 tablets per day in divided doses.
None Documented
None Documented
Clinical Note
moderateClobazam + Estrone sulfate
"The serum concentration of Estrone sulfate can be decreased when it is combined with Clobazam."
Clinical Note
moderateClobazam + Fluticasone propionate
"The risk or severity of adverse effects can be increased when Clobazam is combined with Fluticasone propionate."
Clinical Note
moderateClobazam + Sulfisoxazole
"The metabolism of Sulfisoxazole can be decreased when combined with Clobazam."
Clinical Note
moderateClobazam + Erythromycin
Clobazam: 36–42 hours; N-desmethylclobazam: 71–82 hours. Steady state achieved in 5–10 days.
Amitriptyline: 20-30 hours (range 10-46 h) with a terminal elimination half-life of ~24 h; clinical significance requires 7-14 days to reach steady state. Chlordiazepoxide: 5-30 hours (up to 48 h for active metabolite desmethylchlordiazepoxide).
Renal: ~82% as metabolites (mainly N-desmethylclobazam and hydroxylated metabolites), unchanged clobazam <1%; fecal: ~11%.
Renal (approximately 70-80% as metabolites, 1-3% unchanged) and fecal (20-30% via biliary elimination for chlordiazepoxide component; amitriptyline is primarily excreted renally as metabolites, 10-15% unchanged).
Category C
Category C
Benzodiazepine
Benzodiazepine/Tricyclic Antidepressant Combination
"The metabolism of Erythromycin can be decreased when combined with Clobazam."