I believe the Drs. report said that the stone was "consistant with calcium oxalate." I am probably about 50-60 oz. of water/diet drinks. I am taking Bovine Colstrum, Renaplex (a Thorne Research product), IP-6 and Inositol as well as 140 mg of magnesium and 150 mg of Calcium plus a broad range of vitamins from Thorne Research.