some stuffs they sell are rather expensive. you can get Clarkia cheaper from other place. to cleanse the colon, you can use pysillium & bentonite/enema etc. kidney cleanse or Liver Flush , you can just follow dr clark recipe. I dont know what type of illness that you suffer. If you have other problems like candida, IBS, then you need other supplement. you have to do some research to find a right product for yourself. Anyway, they are not related to Dr Clark