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Home / Drugs / Starting with C / Clobazam
 
Clobazam
 

Clobazam is a drug which is a benzodiazepine derivative. It has been marketed as an anxiolytic since 1975 and an anticonvulsant since 1984. [Wikipedia]
BrandsChlorepin
Clorepin
Frisium
Mystan
Urbadan
Urbanyl
CategoriesAnticonvulsants
Benzodiazepines

indication

For treatment and management of epilepsy and anxiety disorder.

pharmacology

Clobazam is a barbiturate used in combination with acetaminophen or aspirin and caffeine for its sedative and relaxant effects in the treatment of tension headaches, migraines, and pain.

mechanism of action

Clobazam binds at a distinct binding site associated with a Cl- ionopore at the GABA-A receptor, increasing the duration of time for which the Cl- ionopore is open. The post-synaptic inhibitory effect of GABA in the thalamus is prolonged as a result.

biotransformation

Hepatic. Clobazam has two major metabolites: N-desmethyl-clobazam and 4'-hydroxyclobazam, the former of which is active. The demethylation is facilitated by CYP2C19, CYP3A4, and CYP2B6 and the 4'-hydroxyclobazam by CYP2C18 and CYP2C19.

absorption

Bioavailability is 90%.

half life

18 hours

drug interactions

Clozapine: Increased risk of toxicity

Kava: Kava may increase the effect of the benzodiazepine, clobazam.

Telithromycin: Telithromycin may reduce clearance of Clobazam. Consider alternate therapy or monitor for changes in the therapeutic/adverse effects of Clobazam if Telithromycin is initiated, discontinued or dose changed.

Ticlopidine: Ticlopidine may decrease the metabolism and clearance of Clobazam. Consider alternate therapy or monitor for adverse/toxic effects of Clobazam if Ticlopidine is initiated, discontinued or dose changed.

Tipranavir: Tipranavir may decrease the metabolism and clearance of Clobazam. Consider alternate therapy or monitor for Clobazam toxic effects if Tipranavir is initiated or dose increased.

Triprolidine: The CNS depressants, Triprolidine and Clobazam, may increase adverse/toxic effects due to additivity. Monitor for increased CNS depressant effects during concomitant therapy.

Voriconazole: Voriconazole may increase the serum concentration of clobazam by decreasing its metabolism. Monitor for clobazam toxicity if voriconazole is initiated or dose increased.