Component of human saliva may have powerful analgesic properties.
This is the kind of compound Big Pharma would love to get their hands on, that is, if they hadn't already tried to get their hands on it. It's an area that's been rooted to death for pharmaceuticals. Still, it's a neat surprise to see a channel blocker like this turn up right under our noses, so to speak.
Maybe we need to start rubbing snail guts on our wounds instead.