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 ma