Gu Sui Bu (Drynaria), Drynaria Fortunei (Kunze) J. Sm.; Drynariae Rhizoma This herb, called “Bone Fracture Remedy” is so named after its ancient use on bones. This herb is bitter and warm in nature, and enters the kidney and liver meridians. Like Eucommia Bark, this is also a yang tonic. Properties Bitter, warm Channels Entered Liver, Kidney