Chanca Piedra by Advanced Orthomolecular Research is a traditionally used and scientifically proven herbal supplement that supports the health of the liver kidneys and gallbladder. A clinically tested formula Chanca Piedra translates to break stone and helps to naturally eliminate kidney stones and gallstones. Additionally Chanca Piedra helps with urogenital conditions and helps protect the liver from toxins. AOR: the right time the right amount the right ingredients and the right delivery.