Of course it is, that's why they like to use it. It's the perfect crime really, paralyze the guy so he can't protest then dump salt into his heart. If they wa

Of course it is, that's why they like to use it. It's the perfect crime really, paralyze the guy so he can't protest then dump salt into his heart. If they wanted it to be painless, they'd just throw in more of the barbiturate, which they're using already anyway. There is a reason we kill animals like that. Or, as another of your respondents pointed out, nitrogen asphyxiation. That one is so impossible to mess up it's absurd.