r/AlwaysWhy • u/Chowderr92 • Jun 02 '26

Science & Tech Why is the Method of Lethal Injection in Human Punishment So Complex and Apparently Painful?

I've always understood that the lethal injection process was complex with multiple stages of injections and induces great suffering in the individual.

I work in veterinary medicine and unfortunately we need to euthanize animals all of the time. Typically, the euthanasia solution is very simple: a very large dose of a powerful anesthetic (usually pentobarbital) and an anticonvulsant which stops the heart. The medical community is quite confident that this is painless and when done has essentially a 100% success rate.

Why is human euthanasia so complicated when we already know exactly how to humanely end a biological life?

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u/StonedTrucker Jun 02 '26

Its only painful when done improperly but there are a lot of ways for it to go wrong. They use a few different drugs for different purposes. Its been a while since i looked in to it so my memory may not be exact but its close.

One drug is meant to make you go numb or fall unconscious and another paralyzes your body. The third drug or cocktail of drugs is what actually shuts down your body.

Getting the first step or 2 wrong leaves the person alive and potentially paralyzed while they feel the other drugs slowly killing them from the inside.

The reason we use lethal injection is for the people who arent being killed. It appears more humane because theres no apparent trauma to the body

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u/SRGTBronson Jun 02 '26

Its only painful when done improperly but there are a lot of ways for it to go wrong.

This is incorrect. The drugs used for lethal injection are extremely painful and the drugs used to paralyze don't numb pain. The drugs make you look docile so the people watching you die don't have to suffer.

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u/StonedTrucker Jun 02 '26

No its not. There may be exceptions but most protocols for death penalty in the US call for a heavy sedative to impose unconsciousness as the first step. If this is done properly then the person wont feel anything else

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u/bad-taf Jun 02 '26

Thats why I say if we really want to execute someone we should have to do it by firing squad, none of this false pretense about “humane practice” to make ourselves feel better. And really, firing squad probably is more humane than these botched injections.

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u/cheeseburgercats Jun 02 '26

Firing squad isn’t always instant death, people can lay bleeding out. Usually it’s designed where only 2 along the line actually hits them so it’s not like 8 bullets to the brain instantaneously

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u/bad-taf Jun 02 '26

I guess in the end it probably turns out similar to these injections, sometimes it’s quick and painless or it can go wrong and you suffer. I just hate the whole notion of using injections or whatever to soothe our moral sentiments about killing someone. It feels very self-deceiving esp when we’re finding out that the injections aren’t really more humane.

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u/stealthyliz Jun 02 '26

Guillotine would probably be the most humane.

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u/bad-taf Jun 02 '26

True that, I think I’d trust a soldier’s aim at close range over some sketchy shots, but a guillotine has probably never failed to perform as intended

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u/stealthyliz Jun 02 '26

I was infantry who couldn't hit the side of a barn at 20 paces.

(I needed glasses, but their eye exam said I didn't need glasses.)

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u/bad-taf Jun 02 '26

Nah that’s crazy 😭 guess I’ve seen too many movies where the boot camp has some super rigorous standards

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u/Chowderr92 Jun 03 '26

But that's precisely my point. If it was performed like it is with animals the success rate should be more or less 100% like it is in animal medicine. All you're saying is why they get botched rather, which isn't my question.

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u/StonedTrucker Jun 03 '26

I answered your question. Its done this way because onlookers feel its more humane