How Much Research Has Been Done on Herbal Remedies?

I got to thinking about this question after stumbling on a web page that sold a lot herbal sex remedies. The oddest of them was called Jamaican stone. It is some sort of herbal concoction that apparently is made out of tree sap among other things, or at least that is what I understood it to contain. You apply it to the penis and it is supposed to cure premature ejaculation and erectile dysfunction. It is not as though I am sure what you get when you do that in reality, although from looking at the stuff I can not imagine that I would be eager to rub it on any part of my body and especially not that part of it. Continue reading