Why is Paraquat considered extremely dangerous when ingested by humans?

Answer

It causes lethal poisoning in minute quantities and has no known antidote

Paraquat is uniquely hazardous because even a single accidental sip can be fatal. Unlike less toxic substances that might require prolonged or significant exposure to cause harm, this chemical acts as a potent poison in very small doses. Furthermore, there is no medical antidote available to counteract its effects once it has entered the bloodstream, making it a critical threat to human life and necessitating its stringent regulatory status.

Why is Paraquat considered extremely dangerous when ingested by humans?
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