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The distribution half-life of diazepam is two to 13 minutes. [19] Diazepam is highly lipid-soluble and is widely distributed throughout the body after administration. It easily crosses both the blood–brain barrier and the placenta, and is excreted into breast milk. After absorption, diazepam is redistributed into muscle and adipose tissue.
The tables below contain a sample list of benzodiazepines and benzodiazepine analogs that are commonly prescribed, with their basic pharmacological characteristics, such as half-life and equivalent doses to other benzodiazepines, also listed, along with their trade names and primary uses.
Biological half-life (elimination half-life, pharmacological half-life) is the time taken for concentration of a biological substance (such as a medication) to decrease from its maximum concentration (C max) to half of C max in the blood plasma.
Like diazepam it has a long elimination half-life and long-acting active metabolites. Discontinuation of benzodiazepines or abrupt reduction of the dose, even after a relatively short course of treatment (two to four weeks), may result in two groups of symptoms, rebound and withdrawal .
The half-life of chlordiazepoxide is from 5 to 30 hours but has an active benzodiazepine metabolite, nordiazepam, which has a half-life of 36 to 200 hours. [31] The half-life of chlordiazepoxide increases significantly in the elderly, which may result in prolonged action as well as accumulation of the drug during repeated administration.
Chlordiazepoxide, 5 mg capsules, are sometimes used as an alternative to diazepam for benzodiazepine withdrawal. Like diazepam, it has a long elimination half-life and long-acting active metabolites. [25] [69] Management of benzodiazepine dependence involves considering the person's age, comorbidity and the pharmacological pathways of ...
Céline Dion revealed she would take up to 90mg of Valium per day to ease her stiff-person syndromes in her first TV interview since her diagnosis. "We tried a lot of things. Trying a lot of ...
Clobazam, sold under the brand names Frisium, Onfi and others, is a benzodiazepine class medication that was patented in 1968. [3] Clobazam was first synthesized in 1966 and first published in 1969.