| Disease | FIVE HEALTHY VOLUNTEERS ON A NORMAL DIET PROVIDED 24-HOUR URINE COLLECTION FOR PH, VOLUME, CREATININE, OXALATE, CALCIUM, PHOSPHATE, URIC ACID, SODIUM, CITRATE, MAGNESIUM, AND POTASSIUM. CRANBERRY TABLETS WERE ADMINISTERED TO THESE VOLUNTEERS AT
THE MANUFACTURER'S RECOMMENDED DOSAGE FOR 7 DAYS. ON THE SEVENTH DAY, A SECOND 24-HOUR URINE COLLECTION WAS OBTAINED. THE URINARY OXALATE LEVELS IN THE VOLUNTEERS SIGNIFICANTLY INCREASED (P=O.01) BY AN AVERAGE OF 43.4% WHILE RECEIVING CRANBERRY
TABLETS. THE EXCRETION OF POTENTIAL LITHOGENIC IONS CALCIUM, PHOSPHATE, AND SODIUM ALSO INCREASED. HOWEVER, INHIBITORS OF STONE FORMATION, MAGNESIUM AND POTASSIUM, ROSE AS WELL. CRANBERRY CONCENTRATE TABLETS ARE MARKETED FOR URINARY TRACT
AILMENTS. PHYSICIANS AND MANUFACTURER OF CRANBERRY PRODUCTS SHOULD MAKE AN EFFORT TO EDUCATE PATIENTS AT RISK FOR NEPHROLITHIASIS AGAINST INGESTION OF THESE DIETARY SUPPLEMENTS. |