CRANBERRY Maximum Strength, w/ Uva Ursi NOW Cranberry, Maximum Strength vegetarian formula, rich in powerful antioxidant compounds called proanthocyanidins (OPC), has become an essential ingredient in promoting a healthy urinary system. Proanthocyanidins are potent antioxidants that appear to reduce bacterial adhesion to bladder epithelial cells. Some experts believe that the quinic acid found abundantly in Cranberry helps prevent the development of kidney stones. Each dose provides 1000 mg of berry extract with a minimum of 6% quinic acid and 3% OPC. For added support, 300 mg of uva ursi, which in clinical studies has been proven to destabilize the membranes of unwanted particles, and 45 mg of rich grape seed extract, which is a powerful antioxidant high in OPC's, have been included. Dosage: 3 capsules daily