Cang Zhu (Rhizoma Atractylodis)

Source: Cang Zhu (Rhizoma Atractylodis) is the rhizome of Atractylodes lancea (Thunb.) or A. chinensis (DC.) koidz. After harvesting, the medicinal material is sun-dried, then thoroughly steeped in water. It is then cut into pieces and stir-baked prior to use.

Category: Dampness resolving.

Common Name: Atractylodes Rhizome.

Channels Entered: Spleen and Stomach.

Properties and Functions: Cang Zhu (Rhizoma Atractylodis) is pungent, bitter and warm in nature. It has the following clinical functions:

  1. Drying dampness and fortifying the Spleen.
  2. Induces sweating, and dispels wind-dampness and cold.
  3. Clears damp from the lower jiao (burner).
  4. Benefits the eyes.

Indications: Cang Zhu is used for the following clinical indications:

  1. Reduced appetite, diarrhoea, epigastric distention, fatigue, nausea and vomiting due to damp retention in the middle jiao.
  2. Chills, fever, head and body aches along with nasal congestion.
  3. Damp-heat syndrome manifesting as leukorrhoea (vaginal discharge), ulcers, eczema and swollen, sore joints.
  4. Night blindness or diminished vision.

Dosage: 3-9g

Cautions and Contra-Indications: Cang Zhu is contra-indicated for internal heat from yin deficiency and profuse sweating from exterior deficiency.