Mang Xiao (Natrii Sulfas)

Mang Xiao (芒硝), mirabilite (sodium sulfate), purges accumulation and softens hardened stool, and drains heat; it is also used topically to reduce swelling.

Máng Xiāo  ·  芒硝

Latin / Pharmaceutical Name

Natrii Sulfas (mirabilite)

Common English Name

Glauber's salt / mirabilite

Taste

Salty, bitter

Temperature

Cold

Channels Entered

Stomach, Large Intestine

Actions & Functions

  • Purges accumulation and softens hardened, dry stool
  • Clears heat and reduces swelling (topical, e.g. breast distension)

Indications

Constipation with hard, dry stool and heat; and (topical) swollen, painful breasts and skin swellings.

Dosage

6-12 g, dissolved in the strained, hot decoction (not boiled).

Common Combinations

With Da Huang to soften stool and drain heat (Da Cheng Qi Tang).

Cautions & Contraindications

Contraindicated in pregnancy; avoid in cold from deficiency.

About Attilio

Doctor of Chinese medicine, acupuncture expert and author of My Fertility Guide and My Pregnancy Guide.

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