Nearly every substance has an LD50. I wouldn't say they should be used for that, but trying to attack something like the death penalty at that level seems absurd given that there are so many alternate means.
> Nearly every substance has an LD50. I wouldn't say they should be used for that, but trying to attack something like the death penalty at that level seems absurd given that there are so many alternate means.
It's not, because the state isn't allowed to use literally any means to kill someone, so there's actually only a limited number of substances that are actually used.