[Species8472]

I would say skip the first drug altogether

I agree, but for a different reason. By making someone unconscious prior to killing them, do we deny them the last chance for repentance?

[Pikachu_Dad]

Kill them like we do our cows.

[HarmlessLovableFuzzball]

By making someone unconscious prior to killing them, do we deny them the last chance for repentance?

There you go. What better way to make someone repent than make them scream in agony.

Oh wait, they can't scream. Their muscles are paralyzed.