D-Mannose is a simple sugar that occurs naturally in some plants, including cranberries. Although small amounts of D-Mannose are metabolized by the human body, much of it is rapidly excreted in the urine. In the bladder, D-Mannose can adhere to undesirable foreign substances, preventing them from sticking to the lining of the bladder. Because insubstantial amounts of D-Mannose are used by the body, it does not interfere with blood sugar regulation.
As a dietary supplement, take 1 level teaspoon 1 to 2 times daily. Take with water or unsweetened juice, such as unsweetened cranberry juice.