I know this is an old post, but recently I got some Chanca Piedra for my girlfriend to help her with her kidneys. I took it to test it and started getting long stringy things out of my poo. Fantastic stuff. I have gone through all sorts of deworming before, but this is the longest thing ever to have come out. Maybe the parasites in my body were resistant to the standard Clarkia combination of Black-Walnut , Wormwood and cloves?