Active ingredient D-mannose mechanism of action: D-mannose is a simple sugar structurally similar to glucose; it is found in some types of fruits, and is also produced in the body. D-mannose binds to E. coli bacteria, which is why they bind to each other, not to the walls of the urinary tract. Neutralized bacteria can then be easily removed from the body by urinating and can no longer cause infection. It is excreted unchanged with urine in 30 minutes after ingestion, and prevents E. coli bacteria from binding to the walls of the bladder. D-mannose, even in larger quantities, does not cause any harmful side effects, and cannot be metabolized like other sugars, which means that this product is safe for diabetics and others who for any reason should not or do not want to consume sugar.