Di Huang (Sheng) (Rehmannia, dried rehmannia rhizome), Rehmannia Glutinosa; Radix Rehmanniae Rehmannia Root, also called Chinese Foxglove Root, is sweet and bitter, and exhibits a cool energy. It belongs to a category of TCM herbs that cools the Blood. Rehmannia Root cools the blood, tonifies the Yin, and is commonly used to stimulate growth of flesh, muscle, and bone for the healing of athletic injuries. Properties Sweet, bitter, cold Channels Entered Heart, Liver, Kidney