found this quote in a book called " Welsh Herbal Medicine" by David Hoffman He's quoting Gerard (? medieval herbalist I think)
" The slimie substance of the root made in a posset of ale, and given to drinke against the paine in the back, gotten by any violent motion, as wrestling, or over much use of wommn, does in fower or five daies perfectly cure the same, although the involuntary flowing of the seed in men be gotten therby"
Moving swiftly on.... I seem to remember that Compfrey makes a very good, if smelly organic liquid fertiliser