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. 2016 Jun 24;6(1):29–42. doi: 10.1016/j.jfms.2003.09.009

Table 1.

Half-lives of parent compounds and intermediate metabolites of target benzodiazepines in humans (Kaplan and Sadock, 1993) (Tables 1–5 have been previously published in Overall, 2001)

Parent compound 1/2 parent compound (h) t 1/2 intermediate metabolite (h) Overall duration of action (h)
Triazolam 2–4 2 Ultra short: 6
Oxazepam 8–12 Short: 12–18
Alprazolam 6–12 6 Medium: 24
Diazepam 24–40 60 Long: 24–48
Clonazepam 50 Long: 24–48