I believe I have low K also. I have muscle cramping and twitching, and orthosttic intolerance (and CFS). I began the Hulda Clarkkidney cleanse but became so dehydrated that I had to quit. Edemas began to form under my eyes also, so I began to worry about my kideny function. I have already completed 4 liver flushes, but became concerned with my kidneys when my urine became foamy. Any thoughts out there?