Technically, D-Mannose is a "simple sugar." Functionally, it nourishes the healthy flora that colonize the membranes of the urinary tract and keep us in balance. It's no surprise that we've heard from so many of you who appreciate its benefits. But as with all powdered supplements, mixing often gets in the way. If you're a D- Mannose fan looking for a portable solution, or you're interested in going beyond cranberry on your quest for urinary tract health, these caps are for you.