Herbal Extract Maximum Strength Formula to Help Support the Urinary Tract Dietary Supplement For a Healthier Future 100% Vegetarian Formula Guaranteed Quality - Laboratory Tested Cranberry Extract 21st Century Cranberry Extract (Vaccinium oxycoccus) contains a total berry extract. Cranberries have been used to support urinary tract health. 21st Century offers the highest quality ingredients produced to strict nutritional standards for support of your good health.