Concha Ostreae


The shell of Ostrea gigas Thunberg, 0. talienwhanensis Crosse or 0. rivularis Gould, family Ostreidae.

Shells duplicate, the left one large and depressed and the right one small and flattened, the former located on the top during life; appearing long-lamellate, triangular or ovate, and the size various with different species. Outer surface grey-yellow or grey-brown, coarse, with semi-annular growth lines and scales; inner surface milky-white or light purple, with pearl lustre. Prepared as white powder. Salty and astringent in taste slightly cold in nature, and attributive to liver and kidney channels.

1. Calm the liver, benefit yin and suppress the sthenic yang: For sthenia of liver-yang and deficiency of yin leading to hyperactivity of yang manifested as dizziness, tinnitus, irritability and insomnia; convulsion due to affection of wind originated from sthenic liver-yang and febrile diseases with consumption of yin, usually used together with Radix Paeoniae Alba and Radix Rehmanniae.
2. Soften the hard lumps and disperse the stagnated mass: For sub-cutaneous nodule, scrofula and goiter, usually used together with Bulbus Fritiliariae Thunbergii and Radix Scrophulariae (Pill for Resolving Scrofula).
3. Astringe, invigorate the kidney to preserve essence: For kidney-deficiency syndrome manifested as emission, enuresis, menorrhagia, metrorrhagia, spontaneous perspiration and night sweat.
4. Antacid and analgesic: For peptic ulcer, usually used with Rhizoma Bletilkie together.

Pharmacological Action
Its extract inhibits the growth of poliovirus in vivo.

Administration Decoction: 15-30g (crushed and decocted first). Powder: 2-3g tid.
External use: Appropriate amount.


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Mr. Wang Tao

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