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
Its extract inhibits the growth of poliovirus in vivo.
Decoction: 15-30g (crushed and decocted first). Powder: 2-3g tid.
External use: Appropriate amount.