Kidney COP Helps Reduce the Formation and Growth of Calcium Oxalate Crystal Stones by 99% Specifically formulated to support kidney health, Kidney COP helps dissolve, break down, pass and eliminate Calcium Oxalate stones from the kidney. The most common stone, calcium oxalate, makes up 80% of ALL stones. Kidney COPs patented formula has shown to reduce calcium oxalate by 99%. This is five times stronger than Chanca Piedra or Stone Breaker kidney supplements. Kidney COP was developed by a stone sufferer, medical doctor, pharmacist and pharmaceutical professionals after years of research and hundreds laboratory tests. Kidney COP is so effective at reducing calcium oxalate crystal growth, it has been awarded multiple US patents.