Zhu Sha
Cinnabar (HgS)
☯ TCM Properties
Anchors and Calms the Spirit; Clears Heart Fire; Resolves Toxicity; Brightens the Eyes
Botanical Description
Zhu Sha is not a plant but the mineral cinnabar, mercury(II) sulfide (HgS), the principal natural ore of mercury. It occurs as bright vermilion to brick-red massive or crystalline aggregates with adamantine to dull luster, hardness 2-2.5 on the Mohs scale, and an exceptionally high specific gravity around 8.0-8.2. Cinnabar crystallizes in the trigonal system, typically forming rhombohedral or tabular crystals; in TCM materia medica it is sold as small, heavy, brilliant scarlet lumps or as a finely levigated powder. Deposits are associated with low-temperature hydrothermal veins and hot-spring activity. Because cinnabar is a heavy-metal mercury compound, modern toxicology and most contemporary clinical guidance discourage its internal use (Wikipedia; NCBI).
Dosage
| Form | Amount | Frequency | Duration | Population | Notes |
|---|---|---|---|---|---|
| decoction | 9-30g | Daily | — | — | — |
Cultural & Historical Context
Traditional Chinese Uses
Zi Cao (gromwell root, red gromwell root) is a cold herb that cools the Blood and clears Heat toxin, with particular utility in treating conditions where Heat has entered the Blood level. It is a leading herb for measles and rashes that are slow to erupt or appear dark and purplish — indicating trapped heat in the blood. Topically, it is used for burns, skin ulcers, and inflammatory skin conditions. Modern applications include preparations for wounds and eczema.
Traditional American Uses
None Documented
Important Disclaimer
This information is for educational purposes only and is not intended to replace professional medical advice. Always consult a qualified healthcare provider before using any herbal remedy, especially if you are pregnant, nursing, or taking medications.