Swanson ® D-Mannose Powder is a single ingredient dietary supplement in powder form intended to supplement the daily diet of adults. The formula is 100% pure UT- Pro® D-Mannose, with no food additives, including colorings, preservatives or anti-caking agents. D-mannose - what is it? Mannose is a monosaccharide, that is, a simple sugar closely related to glucose. This organic chemical compound from the aldohexose group rarely occurs in nature in the free state. It is most often bound to glycoproteins and glycolipids. One 50g packet of pure D-mannose powder from Swanson ® will provide over 2 months of daily supplementation. The powder form can be a great alternative for people who have trouble swallowing traditional tablets and capsules.