Pharmaceutical Name : Lumbricus

Zoological Name : 1. Pheretima aspergilum (Perrier); 2. Allolobophora caliginosa (Savigny) trapezoides (Ant. Duges)

Common Name : Earthworm

Source of Earliest Record : Shennong Bencao Jing

Part Used & Method for Pharmaceutical Preparations : The earthworm is caught in summer or autumn. It is cleaned in warm water, and then dried in the sun.

Properties & Taste : Salty and cold

Meridians : Liver, spleen and urinary bladder

Functions:
1. To clear heat and subdue endogenous wind;
2. To soothe asthma;
3. To promote urination;
4. To clear the collaterals

Indications & Combinations:

1. Convulsions and spasms due to high fever. Earthworm (Dilong) is used with Uncaria stem (Gouteng), White-stiff silkworm (Baijiangcan) and Scorpion (Quanxie).

2. Damp-heat obstruction syndrome manifested as red, swollen, painful joints and motor impairment. Earthworm (Dilong) is used with Mulberry twigs (Sangzhi), Honeysuckle stem (Rendongteng) and Red peony (Chishao).

3. Wind-cold-damp obstruction syndrome manifested as cold, painful joints with motor impairment. Earthworm (Dilong) is used with Wild aconite root (Caowu) and Arisaema tuber (Tiannanxing) in the formula Xiao Huolu Dan.

4. Hemiplegia due to obstruction of meridians by qi deficiency and blood stagnation. Earthworm (Dilong) is used with Chinese angelica root (Danggui), Chuanxiong rhizome (Chuanxiong) and Astragalus root (Huangqi) in the formula Buyang Huanwu Tang.

5. Heat accumulated in the urinary bladder manifested as dysuria. Earthworm (Dilong) is used with Plantain seed (Cheqianzi) and Clematis stem (Mutong).

6. Asthma. Earthworm (Dilong) is used with Ephedra (Mahuang) and Apricot seed (Xingren).

Dosage: 5-15 g (10-20 g if fresh)