Cystima Medical is a medical device intended for the prevention and supportive treatment of recurrent urinary tract infections (bladder infections or cystitis) caused by E. coli. Cystima Medical is formulated with D-mannose, a natural ingredient. D-mannose is naturally present in human metabolism. It attaches to E. coli bacteria and prevents them from adhering to the walls of the urinary tract. The bacteria can then be easily eliminated from the body during urination.