Salty and slightly cold
Liver and kidney
1. To pacify the liver and subdue the yang; 2. To soften hardness and release nodules; 3. To stop perspiration, nocturnal emissions and leukorrhagia by astringents.
1.Deficient yin of the liver and kidneys and upward flaring of yang manifested as dizziness vertigo, blurred vision, tinnitus, palpitations, irritability and insomnia. Oyster shell (Mu Li ) is used with Dragon bone (Long Gu ), Tortoise plastron (Gui Ban ) and White peony root (Bai Shao ).2. Late stage of febrile disease with exhaustion of yin and body fluids which leads to malnutrition of tendons and muscles manifested as spasms, or convulsions. Oyster shell (Muli) is used with Tortoise plastron (Guiban), Donkey hide gelatin (E Jiao ), White peony root (Baishao) and Turtle shell (Bie Jia ) in the formula Sanjia Fumai Tang.3. Scroula due to phlegm and fire. Oyster shell (Muli) is used with Thunberg fritillary bulb (Zhebeimu) and Scrophularia (Xuan Shen ) in the formula Xiaolei Wan.4. Spontaneous sweating and night sweating due to weakness of the body. Oyster shell (Muli) is used with Astragalus root (Huang Qi ), Ephedra root (Ma Huang Gen ) and Light wheat (Fu Xiao Mai ) isn the formula Muli San.5. Nocturnal emissions due to kidney deficiency. Oyster shell (Muli) is used with Flattened milkvetch seed (Sha Yuan Zi ), Euryale seed (Qian Shi ) and Lotus stamen (Lianxu) in the formula Jinsuo (GV8)  Gujing Wan.6. Uterine bleeding and leukorrhagia due to deficient Chong and Ren meridians. Oyster shell (Muli) is used with Dragon bone (Longgu), Dioscorea (Shan Yao ) and Schisandra fruit (Wu Wei Zi )