Years & years ago I drank a socalled "cleansing" herb tea sold by a multilevel marketing company. It was not sold as a parasite killer at all. I had heard that one of the "side effects" was you produced what looked like larger-than-averge corn kernels.
Lo and behold, this happened to me too! I believe that the company has changed the formula and it doesn't work like that anymore, but I am not completely sure. The original formula was called Nature's Tea and sold by Enrich Co. (now called Unicity).