Kansui root (Gansui)

Pharmaceutical Name : Radix kansui

Botanical Name : Euphorbia kansui T. N. Liou ex T. P. Wang

Common Name: Kansui root

Source of Earliest Record: Shennong Bencao Jing

Part Used & Method for Pharmaceutical Preparations : The tuberous root is dug in late autumn or early spring. The root bark is peeled off, and the root is dried in the sun. Then it is soaked in vinegar.

Properties & Taste : Bitter, sweet, cold and toxic

Meridians: Lung, kidney and large intestine

Functions:
1. To transform water and reduce edema;
2. To disperse nodules and relieve swelling

Indications & Combinations:
1. Edema and full sensation in abdominal region. Kansui root (Gansui) is used with Pharbitis seed (Qianniuzi) in the formula Erqi Tang.

2. Ascites. Kansui root (Gansui) is used with Peking spurge root (Daji) and Genkwa flower (Yuanhua) in the formula Shizao Tang.

3. Retention of water or fluid in the chest. Kansui root (Gansui) is used with Rhubarb (Dahuang) and Glauber's salt (Mangxiao) in the formula Da Xianxiong Tang.

4. Boils, carbuncles and furuncles. Kansui root (Gansui) is ground into powder and mixed with water for external application.

Dosage: 0.5-1 g

Cautions & Contraindications: This herb is best used in pill and powder form. It should not be used with the herb Licorice root (Gancao) and is contraindicated during pregnancy.