D-mannose, a dietary supplement made from a type of fruit sugar, is available for purchase at most natural health-food stores or supplement stores, according to About.com. It is also available for purchase online from vitamin and supplement retail websites.
D-mannose is most often used as a natural remedy for urinary tract infections, due to its perceived ability to prevent bacteria from adhering to the inner walls of the urinary tract, according to Web MD. There is a lack of published clinical trials testing the use of D-mannose to treat urinary tract infections and other conditions. However, a laboratory experiment published in the Public Library of Science suggested that D-mannose is useful in preventing these infections.
Proponents of D-mannose also tout the supplement's ability to regulate blood sugar levels, improve liver function and protect against blood clotting. These claims have not been validated in published studies, and the long-term effects of D-mannose supplementation are unknown.
For the treatment of urinary tract infections, it is important to seek professional medical care. Although D-mannose has promising attributes, antibiotics are still the most effective course of treatment to get rid of the infection and prevent it from spreading to the kidneys.