Individual Herbs Notebook

Sheng Yao

Pharmaceutical: Hydrargyrum Oxydatum Crudum
Chemical Formula(e): HgO

Other names: Mercury Oxide

Category: Obsolete Substances



Properties: Pungent, hot, strongly toxic.

Meridans Entered:
Primary: None given


Traditional Actions/Indications:
  1. Discharges pus and removes putridity topically
    Eczema, impetigo, stubborn tinea and syphilis

Suggested Daily Dosage: No dosages given, only small amounts for short term external use only.


Cautions: Being strong toxic, it can only be indicated externally. For external application, it should not be used for overdose or persistent use. The poisoning manifestations of this herb are similar to Qing Fen.


Does not appear in any formulae listed on this site
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