Table 2.

Pharmacokinetic parameters of diazepam following various routes of administration [31,32,33].

Route of Administration	Onset of Action (min)	Peak Plasma Levels (min)	Bioavailability
Oral	15–60	30–90	100%
IM	15–30	30–60	60%
Rectal	5–10	10–45	80–90%
Intranasal	<5	>60	97%