Rehmannia Ten Formula is a traditional herbal remedy crafted to warm the kidney and promote qi flow, supporting the body's ability to manage such conditions as kidney yang deficiency, edema, lower back and knee pain, as well as difficulty urinating. This formula uses the natural power of herbs to target the root cause of the discomfort. This product description is based on the Taiwan Herbal Pharmacopeia 4th Edition and is provided for informational purposes only, not for self-diagnosis.