"Several benzodiazepines (vegeu benzodiazepina), including chlordiazepoxide (vegeu clordiazepòxid), diazepam (vegeu diazepam), halazepam, chlorazepate, and prazepam, are converted in the stomach or by the hepatic microsomal system to one or more active metabolites (vegeu metabòlit actiu); of these desmethyldiazepam has an elimination half-life of 36 to 200 hours."