For the best results killing parasites Clark's 3 herbs are used together.
parasite Cleanse by Hulda Regehr Clark - Alternative Medicine ... parasite Cleanse by Hulda Regehr Clark ... CureZone > Dr.Clark. Hulda Regehr Clark. parasite Cleanse Handy Chart Maintenance Parasite Program
There is also a 20 day program online using the herbs and Clark's Zapper.
Doing Clarks kidney cleanse prepares the kidneys to excrete toxins and also dissolves hard calcium stones. Moritz softens hard stones with apple juice/malic acid and some people use gold coin grass.