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Alprazolam, sold under the brand name Xanax among others, is a fast-acting, potent tranquilizer of moderate duration within the triazolobenzodiazepine group of chemicals called benzodiazepines. [15] Alprazolam is most commonly prescribed in the management of anxiety disorders , especially panic disorder and generalized anxiety disorder (GAD). [ 9 ]
The elimination half-life is how long it takes for half of the drug to be eliminated by the body. "Time to peak" refers to when maximum levels of the drug in the blood occur after a given dose. "Time to peak" refers to when maximum levels of the drug in the blood occur after a given dose.
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 ...
As with other benzodiazepines, in case of abrupt discontinuation following prolonged use, severe withdrawal symptoms may occur including restlessness, anxiety, insomnia, seizures, convulsions and death, though because of its intermediate half-life [17] [18] [19] as well as that of its active metabolites, these withdrawal symptoms may take two ...
A benzodiazepine can be placed into one of three groups by its elimination half-life, or time it takes for the body to eliminate half of the dose. [195] Some benzodiazepines have long-acting active metabolites, such as diazepam and chlordiazepoxide, which are metabolised into desmethyldiazepam. Desmethyldiazepam has a half-life of 36–200 ...
The elimination half life of estazolam is an average of 19 hours, with a range of 8–31 hours. [ 20 ] [ 21 ] The major metabolite of estazolam is 4-hydroxyestazolam. [ 22 ] Other identified metabolites include 1-oxo-estazolam, 4'-hydroxy-estazolam, and benzophenone .
Nitrazepam is a long-acting benzodiazepine with an elimination half-life of 15–38 hours (mean elimination half-life 26 hours). [12] Residual "hangover" effects after nighttime administration of nitrazepam such as sleepiness, impaired psychomotor and cognitive functions may persist into the next day, which may impair the ability of users to ...
Absorption half-life 1 h, elimination half-life 12 h. 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 .