Which among the following used as a pre-anaesthetic medication causes the longest amnesia?
The longest amnesia is produced by lorazepam although half-life of lorazepam (15 hours) is shoer than diazepam (36 hours) and this is probably because of its strong receptor binding potential.
Diazepam
Lorazepam
Midazolam
Flunitrazepam
General anaesthesia