Kidney Cleanse is a combination of herbs and vitamins that help support the kidneys natural cleansing processes.* A blend of Cranberry Extract Nettle Leaf Powder and Uva Ursi Leaf Extract may help promote urinary tract wellness.*The kidneys are vital organs that are part of the excretory system. They work around the clock to flush out destructive toxins from the bloodstream that have entered in through the food water or air we breathe.