Many people dealing with chronic kidney stones benefit from taking supplements. One of the popular supplements is e chanca piedra, aka Stone Breaker. . This is basically an herb that supposedly helps break up the stones and pass the stones as it is a diuretic. Clinical studies have not yet clearly documented that chanca Piedra works. There is a relatively newer supplement on the market formulated for Calcium Oxalate Stones called Kidney C.O.P. Calcium Oxalate Protector. Laboratory studies shown that Kidney C.O.P. was five times more powerful at inhibiting the rate calcium oxalate crystal growth that chanca piedra, a.k.a. Stone Breaker, so this supplement may possibly help. The Kidney C.O.P. formula has also shown in laboratory testing (documented in patents) to inhibit the rate of calcium oxalate crystal growth by 99%.