D-Mannose Capsules 500mg (60) - Healthreach. D Mannose is a simple sugar found in cranberries.. Pure D-Mannose powder has up to 50 times more D-Mannose than Cranberry.. Healthy Urinary Tract. Cleanses the Bladder. Non-GMO Project Verified. A Dietary Supplement. D-Mannose is a naturally occurring simple sugar that your body utilizes to help cleanse the urinary tract and maintain a healthy bladder lining.. It's metabolized only in small amounts, with excess amounts rapidly excreted in urine, so it won't interfere with healthy blood sugar regulation. D-mannose promotes normal urinary tract function by cleansing and maintaining the health of the bladder lining.