Gu Sui Bu herb | Drynaria Rhizome - Herbs for Bone Healing - Medicinal Grade Chinese Herb 1 Oz - Plum Dragon Herbs High Quality Gu Sui Bu or Dynariza rhizome herb that helps and support for bone healing Geo authentic herbs, sulfur free, lab tested and sourced indigenously This herb is bitter and warm in nature and enters the kidney and liver meridians This is also called yang tonic. Medicinal Grade Chinese Herb