Pharmaceutical Latin: Calomelas
Common English: Calomel
Shui Yin Fen
Obsolete Substances: Substances for Topical Application
Taste Temperature Entering Meridians Dosage
Very Cold
Very Toxic
Large Intestine
Pills or Powders: 0.1-0.2g
Actions Indications/Syndromes

Strongly kills parasites, generates flesh and promotes the healing of sores

Skin parasites and fungal infections of the skin

Sores that have turned into non-healing ulcers

Resolves toxicity and kills parasites

As an external wash for scabies, rosacea and syphilitic chancres

Expels water and unblocks the bowels and bladder

Internally for patterns of Excess with edema, urinary retention and constipation

  • Do not take internally when pregnant or weak.
  • Contraindicated during pregnancy.
  • Contraindicated for those with deficient constitutions.
  • Contraindicated for those with Kidney conditions (nephritis) or Liver conditions.
  • When used topically, do not take long term or in too high a dose.
  • Use cautiously for those with hypersensitive skin.
  • Contraindicated in decoction as cooking increases its toxicity.
  • Strictly avoid overdose.
  • Counteracts Magnetitum Ci Shi.

Resina Daemonoropis
Xue Jie
Rx. Angelicae Sinensis
Dang Gui
Rx. Arnebiae/Lithospermi
Zi Cao

Xiong Huang
Sm. Hydnocarpi
Da Feng Zi

Gypsum Fibrosum
Shi Gao
(CX. Phellodendri)
(Huang Bai)

With beeswax and sesame oil, as an ointment to generate flesh over non-healing ulcers.

Topically as a powder for scabies.

Topically as a powder mixed with water or sesame oil for skin ulcers.

Indigo Naturalis
Qing Dai

Sm. Hydnocarpi
Da Feng Zi

Rx. et Rz. Rhei
Da Huang
Sm. Pharbitidis
Qian Niu Zi

Topically as a powder, for syphilitic ulcers.

Topically for leprosy.

Edema, ascites, and constipation associated with some cases of Kidney Yang Deficiency. Use extreme caution for weak patients.

Rz. Coptidis
Huang Lian
Fel Porcus
Zhu Dan

Rx. et Rz. Rhei
Da Huang

Liu Huang

Sm. Juglandis
Hu Tao Ren
Flos Sophorae
Huai Hua Mi
Fr. Jujube
Da Zao

Topically for skin sores.

Powder and mix with sesame oil, petroleum jelly honey and cold water for Rosacea and pimples.

Taken internally for chancres. (no longer used)

Liu Huang

Qian Dan

Rx. Euphorbiae Fischerianae
Long Du
Hb. Asari
Xi Xin

Rx. Euphorbiae seu Knoxiae
Hong/Jing Da Ji
Flos Genkwa
Yuan Hua
Sm. Pharbitidis
Qian Niu Zi

Topically for general fungal infections.

Fungal infection with severe itching.

Moderate edema with difficulties urinating and defecating.

Rx. Euphorbiae seu Knoxiae
Hong/Jing Da Ji
Flos Genkwa
Yuan Hua
Sm. Pharbitidis
Qian Niu Zi
Per. Citri Reticulatae Viride
Qing Pi
Sm. Arecae
Bing Lang

Fr. Jujube
Da Zao


edema with difficulties urinating and defecating.



  1. This herb contains mercury and is therefore toxic. Overdose can lead to sloughing of the intestinal wall and Kidney damage.
  2. Do not use more than two times per day.
  3. It can be used alone for mild edema with difficulties urinating and defecating.
  4. Too much can cause dry throat, mouth ulcerations, and abdominal pain.
  5. This herb is widely used in creams and powders to kill parasites and attack toxins.
  6. It stops itching and treat brandy nose and itchy Wind sores.
  7. This herb has been shown to kill and inhibit the growth of cancer cells.
  8. When taken together with rice flour, this herb quickly promotes lactation and cures sore throat with globus hystericus.
  9. It is said that several applications of this herb can cure leukoderma quickly.
  10. For various types of malignant boils, crush 250g Qing Fen, 250g Rz. Coptidis Huang Lian and 250g Minium Qian Dan into a powder and a apply topically.
  11. Both Qing Fen and Minium Qian Dan are toxic and used externally to treat toxic sores. Qing Fen expels toxins, generates flesh, kills parasites and stops itching. it is used externally for scabies, tinea and syphilitic chancres. Qian Dan has a stronger action in eliminating toxicity and generating flesh. It is used for toxic abscesses and non-healing ulcers.