I believe I first read about Clarkia a parasite killing tincture by clicking on a link somewhere on Curezone. Clarkia is a product that is based on the research of Dr. Hulda Clark , although Dr. Clark does not make the product. I have been told that she is a scientist, not a saleperson. The people who make Clarkia base its ingredients on what Dr. Clark says will work to kill parasites. The three components of the product are Black-Walnut , Wormwood and cloves. I ordered it on line and you can read about it at www.sbherbalremedies.com. I used Clarkia according to the instructions the first time before my liver cleanse. I had good results with the cleanse. This last time, I did not do Clarkia first to get rid of parasites before the cleanse, and for that reason, or maybe another reason, I did not have any stones come out.