The cocktail used generally contains sodium thiopental (to anaesthetise the condemned man), pancuronium bromide (to paralyse his muscles) and potassium chloride (to stop his heart).
一般注射用的混合针剂含有硫喷妥钠（麻醉犯人），泮库溴铵（麻痹犯人肌肉）和氯化钾（停止犯人心跳）。
2
A non - depolarizing neuromuscular blocking drug (e. g., vecuronium, atracurium, or pancuronium) can be substituted for succinylcholine, but the onset of paralysis is delayed by about 60 seconds.