Ingredients & DescriptionCranberry juice (Vaccinium macrocarpon) helps to support a healthy urinary tract*. Research has demonstrated that substances in cranberry prevent bacteria from sticking to the lining of the urinary tract and bladder, where they multiply. Natural Factors Cranberry Extract capsules provide a superior source of cranberryÃÂs unique health promoting compounds. The capsules are a potent source of cranberry powder containing a very high 36:1 ratio of concentration. (This means that 36 grams of cranberries equals 1 gram of concentrate.) The capsules are also more convenient to take than cranberry juice, without the added sugar.