Yeah, I’ll be honest, I’m not actually sure which point you’re making. Curare is incredibly lethal stuff. When it was first discovered in South America, the locals were using it to poison their arrows.
Curare is a paralytic that attacks the respiratory system. It has modern medical uses when performing surgery on the lungs, and as a muscle relaxant before surgery. (Which, incidentally means, both of us might have been dosed with this at one time or another in our lives.)
It’s also used as an anticonvulsant when treating tetanus, and to treat spastic paralysis when surgically correcting some breaks and dislocations.
There isn’t actually an antidote, but, in a medical environment, the patient can be put on a respirator and will recover without ill effects. Near as I can tell, there isn’t even really a “safe” dosage. It seems to be you either put the victim on a respirator or you notify the next of kin.
Here’s the reason why I’m not sure what point you’re making, curare won’t put you under. It will paralyze the victim, but if they survive, they’ll remember the entire ordeal. If the victim dies, it will be from asphyxiation because the toxin kept them from breathing, they’ll also be awake and aware for the experience… In a combat, it’s for those times you don’t trust an arrow to be lethal enough, and need to make sure whoever your shooting is extra dead.