While I was on Reddit, I found an interesting claim about a leaf that looks like a mint that can numb toothaches. Here is the exact quote from Reddit
I do know that some tribes in Cumberland island (along the coast of what is now Georgia) would place a mint-style leaf in the side of their mouth to numb tooth aches. I can speak from experience that it is very powerful - I first learned this during a guided tour of the island many years ago.
Here is some more info and a citation.
Alas, that link is nonoperative. So to what leaf was the above referring? Is the claim actually true?