ANSWER: D-mannose is a naturally-occurring sugar that is found in small quantities in a variety of fruits, such as cranberries, blueberries, and peaches.
It can also be extracted from these fruits and produced commercially in a laboratory setting. In its pure form, D-mannose is a white, crystalline powder that is soluble in water. It is commonly used as a supplement to help prevent and treat urinary tract infections (UTIs).
When bacteria attach to the urinary tract and cause an infection, D-mannose can help to flush the bacteria out of the urinary tract and prevent them from attaching to the bladder or urinary tract walls. This can help to reduce the risk of developing a UTI and can also help to clear an existing UTI. In addition, D-mannose may also have potential benefits for other conditions, such as allergies and chronic fatigue syndrome, but more research is needed to fully understand its effects.