Did You Know? Organic Cranberries and D-mannose are a dynamic duo for preventing urinary tract infections in dogs and cats. Cranberries contain A-type proanthocyanidins, which interfere with bacteria’s ability to attach to the bladder wall, while D-mannose actually binds with bacteria so that it is expelled in urine rather than multiplying within the bladder to cause an infection and UTI symptoms. We also include organic marshmallow root, organic astragalus root and organic stinging nettle root to boost immune function, promote bladder and kidney health, and defend against inflammation.