So why not inject too much insulin? The few times it happened to me to cause a real issue i lost consciousness and only came to in an ambulance when someone did something about it.
Donno if non doabetics can counter too much insulin?
Whatever drug is used will get a reputation, even if it has legitimate, essential medical uses. You also have to convince the suppliers that it's okay, and that's a tall order even in the US where medical ethics don't exist; no company wants to say 'our insulin kills people', no matter how much you've dehumanized the people or state that you're using extreme dosages to achieve the effect.