Derrived from CranberrySafe for long term use Cranberry is a small, evergreen shrub grown throughout North America and the juice from its berries has a long history of use among Native American Indian tribes for treating conditions. One of the simple sugar molecules found in cranberries is d-mannose, which may help prevent urinary tract infections (UTIs) as well as carbohydrate-deficient glycoprotein syndrome, which is an inherited metabolic disorder. Taking d-mannose in tablet form makes a lot of sense as it contains significantly more d-mannose than is naturally found in food, ensuring the recommended half teaspoon (approximately 1 gram) adult dose is reached. D-mannose is very safe, even for long term use, and although it's a simple sugar very little of it is metabolised. It doesn't interfere with blood sugar regulation, even for diabetics; and it creates no disruption or imbalance in normal body microflora.