Cranberry concentrate provides urinary tract support without the unwanted sugar found in cranberry juice or juice cocktails. It enhances the acidity of urine and maintains a healthy urinary tract ecology. At Brigham and Women s Hospital in Boston a randomized double-blind placebo-controlled trial involving over 150 female volunteers reported positive support for a healthy urinary tract after administration of a cranberry beverage. d-Mannose a simple sugar found in cranberries and other fruit is included in this formula to provide enhanced support. One study suggested that d-Mannose may play a role in supporting healthy genitourinary function by maintaining a healthy mucosal surface.*