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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.
Desmethyldiazepam has a half-life of 36–200 hours, and flurazepam, with the main active metabolite of desalkylflurazepam, with a half-life of 40–250 hours. These long-acting metabolites are partial agonists. [6] [145] Short-acting compounds have a median half-life of 1–12 hours.
Nordazepam is a partial agonist at the GABA A receptor, which makes it less potent than other benzodiazepines, particularly in its amnesic and muscle-relaxing effects. [6] Its elimination half life is between 36 and 200 hours, with wide variation among individuals; factors such as age and sex are known to impact it. [2]
An equianalgesic chart can be a useful tool, but the user must take care to correct for all relevant variables such as route of administration, cross tolerance, half-life and the bioavailability of a drug. [5] For example, the narcotic levorphanol is 4–8 times stronger than morphine, but also has a much longer half-life. Simply switching the ...
Midazolam is a short-acting benzodiazepine in adults with an elimination half-life of 1.5–2.5 hours. [13] In the elderly, as well as young children and adolescents, the elimination half-life is longer. [44] [66] Midazolam is metabolised into an active metabolite alpha-hydroxymidazolam.
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.
Benzodiazepines such as nitrazepam are lipid-soluble and have a high cerebral uptake. [89] The time for nitrazepam to reach peak plasma concentrations following oral administration is about 2 hours (0.5 to 5 hours). The half-life of nitrazepam is between 16.5 and 48.3 hours. In young people, nitrazepam has a half-life of about 29 hours and a ...
Medazepam is a drug that is a benzodiazepine derivative. It possesses anxiolytic, anticonvulsant, sedative, and skeletal muscle relaxant properties. It is known by the following brand names: Azepamid, Nobrium, Tranquirax (mixed with bevonium), Rudotel, Raporan, Ansilan and Mezapam. [2]