Kidney C.O.P. ® is also manufactured in a FDA cGMP compliant facility. GMP stands for Good Manufacturing Practice and the “C” in cGMP stands for current. As a whole, this means that the manufacturing process utilized to manufacture Kidney C.O.P. ® follows up to date current Good Manufacturing Practice regulations set by the FDA. If you’re one of many people that need the extra help from Kidney C.O.P. ® to deal with calcium oxalate crystals, then you’ve probably seen some great results.