豆豉

Prepared soybean (Douchi)

Pharmaceutical Name: Semen Sojae Preparatum

Botanical Name: Glycine max (L.) Merr.

Common Name: Prepared Soja, or Prepared soybean

Source of Earliest Record: Mingyi Bielu

Part Used: The seeds are gathered and subjected to a process of fermentation.

Natural Properties & Taste: Pungent, sweet, slightly bitter and cold

Meridians: Lung and stomach

Therapeutic Effects:
1. To release the exterior.

2. To relieve restlessness.

Indications:
1. Wind-cold exterior syndrome. Prepared soybean (Douchi) is used with Chinese green onion (Congbai) in the formula Cong Chi Tang.

2. Wind-heat exterior syndrome. Prepared soybean (Douchi) is used with Arctium fruit (Niubangzi) and Forsythia fruit (Lianqiao).

3. Irritability, restlessness and insomnia following febrile disease. Prepared soybean (Douchi) is used with Capejasmine (Zhizi) in the formula Zhizi Chi Tang.

Dosage: 10-15 g