NOW D-Mannose Urinary Support, 500 mg, 120 Veg Capsules.D-mannose is a naturally occurring simple sugar that your body utilizes to help cleanse the urinary tract and maintain a healthy bladder lining.* Its metabolized only in small amounts, with excess amounts rapidly excreted in urine, so it wont interfere with healthy blood sugar regulation.* Clinical studies have demonstrated that, when taken regularly, D-mannose promotes normal urinary tract function by cleansing and maintaining the health of the bladder lining.*