Quick Facts
| Latin Name | Draconis Os (processed) |
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| Chinese Name & Pinyin | 煅龍骨 · Duan Long Gu |
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| Medicinal Part | Minerals |
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| Efficacy Category | Astringent |
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| Botanical Origin | The calcined fossil bone of ancient mammals such as Equus, Rhinoceros, Cervus, Bos and Elephas (Fossilia Ossis Mastodi). |
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| Nature & Flavour | Sweet, Astringent; Neutral |
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| Channels Entered | Heart, Liver, Kidney |
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What Is Duan Long Gu?
Duan Long Gu (Calcined Dragon Bone) is a medicinal herb of Traditional Chinese Medicine.
Primarily produced in the Chinese provinces of Shanxi, Inner Mongolia, Shaanxi.
Nature & Flavour: Sweet, Astringent; Neutral
Channels Entered: Heart, Liver, Kidney
Duan Long Gu: Materia Medica Profile
Identification & Quality Standard
Draconis Os (processed)
Botanical Origin
The calcined fossil bone of ancient mammals such as Equus, Rhinoceros, Cervus, Bos and Elephas (Fossilia Ossis Mastodi).
Production Regions
Primarily produced in the Chinese provinces of Shanxi, Inner Mongolia, Shaanxi.
Quality Requirements
Superior medicinal material is white, heavy, and absorbent.
Macroscopic Features
Irregular lumps or fragments, varying in size. Externally white or pale grayish-white; after calcining, surface is pale grayish or light brown, with porous texture. Heavy, hard and brittle; fractured surface is uneven, often with honeycomb-like pores. Faint odor, tasteless.
Traditional TCM Properties
Sweet, Astringent; NeutralHeartLiverKidney
Traditional Functions
Astringes and secures, promotes tissue healing and generates flesh; calms the spirit when unprocessed.
How Duan Long Gu Is Used in TCM
In the Chinese materia medica, Duan Long Gu is classified among the Astringent herbs.
Medical Disclaimer — This article is provided for educational purposes only and describes traditional Chinese medicine concepts. It is not medical advice, and it is not intended to diagnose, treat, cure or prevent any disease. Always consult a qualified practitioner before using any herb, particularly if you are pregnant, nursing, taking medication or managing a diagnosed condition.
