D-mannose powder is an aldohexose that has applications in food, cosmetics, medicine and feed. It exists in a variety of fruits and plants, and is an important component involved in human metabolism, especially in the glycosylation of certain proteins. D-mannose powder is the main component of Dendrobium officinale polysaccharide and a key indicator for measuring the quality of Dendrobium officinale.

As a natural bioactive monosaccharide, D-mannose powder is a popular nutritional and health food supplement, especially for dietary supplements, as a supplement of glyconutrients related to human health.
When excreted through the kidneys, bladder and urethra, mannose will wrap the passing tissue cells and the bacteria that try to adhere to the cells, so that the bacteria cannot adhere to the cells of the bladder and urinary tract, blocking the way of bacterial infection and preventing them from sticking to the cells. Bacteria attached to the urinary tract tissue are excreted in urine, making it useful for treating or preventing bladder and urinary tract infections. The efficacy of D-mannose powder in preventing UTIs has been proven in clinical trials, and for preventing recurrent UTIs, D-mannose powder is as effective as antibiotics with significantly fewer side effects.