Individual Herbs Notebook

Mang Xiao

Pharmaceutical: Natrii Sulfas
Chemical Formula(e): Na2SO4·10H2O

Other names: Glauber's Salt / Mirabilite

Category: Downward Draining Herbs



Properties: Salty, bitter, cold

Meridans Entered:
Primary: Stomach and Large Intestine
Divergent Zones: Yangming


Traditional Actions/Indications:
  1. Purges accumulations, guides out Stagnation, softens hardness and moistens Dryness
    Heat in the Stomach and Intestines with constipation and hard knots
  2. Clears Heat and drains Fire
    Heat in the Stomach or Lungs especially accumulated Phlegm or clumping in the Intestines
  3. Clears Heat and reduces swelling
    Red, swollen, painful eyes
    Painful, ulcerated, swollen mouth or throat (topical)
    Red, swollen skin lesions (topical)
    Mastitis (topical) (promotes lactation)

Suggested Daily Dosage: 10-15g dissolved into decoction at end.


Cautions: Use with caution for women during lactation for its milk regurgitation action. It is contraindicated to pregnant women.

Mineral products are prohibited from use in the UK under the Medicines Act 1968 ch. 67 which restricts herbalists to the use of plant products only. It is generally substituted with Yu Li Ren. If the osmotic laxative effects of salts are required then Epsom salts (magnesium sulfate) are more commonly available in the UK, although they still come under the same laws and would have to be included as lifestyle advice, to be sourced and dosed by the patient, not prescribed and given by the herbalist.


Appears in 35 formulae listed on this site: (click to display)
Research Links & References: (click to display)