Poisons that paralyze are called neurotoxins. It doesnt matter what it was made of. It was complex poison, healing wasnt enough since Sakura had to make antidote for it. That proves enough.No prep is fine Byakougou would still treat it. It was never said that the poison was a neurotoxin. You're just assuming it was but according to the Naruo Wiki it made with heavy metals.
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