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Zi Ran Tong
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Zi Ran Tong (Pyritum)——Lei Gong Pao Zhi Lun (Lei’s Treaties on Preparation of Drugs)

  1. Zi Ran Tong
  2. 自然铜
  3. 自然銅
  4. Pyrite

The Processing of Pyritum


The iron pyrite of sulfide mainly containing FeS2.


Sichuan, Hunan and Yunnan provinces in China.


Collected all the time.

The actual smell and taste

No smell and taste.

Best quality

Regular, yellow with brightness, metalic luster of cross section.


Smashed, calcined by fire and quenched in vinegar, made powder or refined with water.

The Effect of Pyritum


Pungent, neutral; liver and kidney meridians entered.


Dissolve stasis and alleviate pain, reunion bones and cure trauma.


Traumatic injuries, bone fracture and soft tissue injuries, congestion, swelling and pain.

This herb has the actions of dissolving stasis, alleviating pain and promoting healing of bone fracture as a specific herb of traumatology. It is used both internally and externally. It is usually combined with blood-activating and trauma-curing analgesics such Xue Jie, Ru Xiang and Mo Yao, etc.

Dosage and Administrations

Decoct 10~15 g, 0.3 g in powder. Proper dose for external application.