|Pharmaceutical Name:||Rhizoma Drynariae|
|Botanical Name:||Drynaria frotunei (Kunze) J. Sm.
Drynaria baronii (Christ) Diels.
|Common Name:||Drynaria, Davallia|
|Source of Earliest Record:||Kaibao Bencao|
|art Used & Method for Pharmaceutical Preparations:||The rhizomes are dug in any season. After they have been cleaned, the rhizomes are cut into slices and dried.|
|Properties and Taste:||Bitter and warm|
|Meridian:||Liver and kidneys|
|Functions:||To tonify the kidneys
To invigorate blood and stop bleeding
To heal wounds
|Indications and Combinations:||1. Deficient kidneys manifested as lower back pain, weakness of the legs, tinnitus, deafness or toothache.
*Use with Psoralea fruit (Buguzhi), Cyathula root (Niuxi) and Walnut seed (Hutaoren) for lower back pain and weakness of the legs. Drynaria (Gusuibu) can also be used with Prepared rehmannia root (Shudihuang) and Dogwood fruit (Shanzhuyu) for tinnitus, deafness and toothache.
2. Swelling and pain due to external trauma or injury.
*Use with Tiger bone (Hugu), Tortoise plastron (Guiban) and Myrrh (Moyao).
|Cautions:||This herb is contraindicated in cases with deficiency of yin with internal heat and symptoms without blood stasis.|