Michael's Naturopathic, Kidney Factors, 120 TabsProduct Description The kidneys are responsible for many essential bodily functions including maintaining fluid balance, reabsorbing minerals including calcium, regulation of pH, production of enzymes and hormones, blood filtration, excretion of toxins, and producing the active form of Vitamin D3. Kidney factors provides nutrients to nourish the kidneys so they can perform these functions efficiently. B vitamins, buchu leaf, uva ursi for overall