咸，寒，有小毒。能解鳝鱼毒，治筋骨折伤。（带黄，去壳捣烂，微炒 之。）黄涂漆疮
即愈
。（蟹能化漆成水。）壳治儿枕作痛。爪破宿血，下死胎。
（蚌蛤类十一种）
得甘草、牛膝、远志、蛇床子良。贝母为之使。恶麻黄、吴茱萸、辛夷。伏 砂。
咸，平，微寒，涩。入足少阴经血分。主泄精带下，逐虚痰宿血，除梦交，治温疟，止
遗溺，散喉痹。收往来潮热，
消胸膈胀满。凡肝虚阳升于顶者，得此降之，而阳自归也。得杜仲，止盗汗。（加麻黄根更
好。）得玄参，治男女瘰 。
得柴胡，治腹痛。配大黄，消痈肿。配鳖甲，消胁积。和贝母，消痰结。合花粉，消瘿瘤，
并治伤寒百合变渴。同干姜
末，水调，
涂阴囊水肿。（热如火，若干燥再涂之，小便利自愈。）
研。久服寒中。
制石亭脂、硫黄。
甘、咸、冷。止渴除热。解酒毒，去赤眼。多食发风动气。
壳粉
咸，寒。清热行湿。得青黛、齑菜水，治痰饮咳嗽。配米醋，调涂痈疽赤肿。
甘、咸、冷。去热利便，除湿开胃。生捣汁，涂疔疮。多食发嗽，且使冷气消肾。
壳
咸，温。治阴疮，止痢疾，疗失精，化痰饮，止呕吐，除吞酸。
Salty, cold, slightly toxic. Capable of resolving eel fish toxicity and treating bone fractures and soft tissue injuries. (Crabs with roe are shelled, mashed, and lightly stir-fried.) Applying crab roe to lacquer dermatitis results in immediate healing. (Crabs can dissolve lacquer into water.) Crab shells treat postpartum abdominal pain caused by blood stasis (Zhenzhen Tong). Crab claws break up old blood stasis and expel dead fetus.
(There are eleven species of bivalves/clams)
It pairs well with Glycyrrhizae Radix et Rhizoma (Gancao), Achyranthis Bidentatae Radix (Niuxi), Polygalae Radix (Yuanzhi), and Cnidii Fructus (Shechuangzi). Fritillariae Bulbus (Beimu) acts as an ushering herb. It is incompatible with Ephedrae Herba (Mahuang), Evodiae Fructus (Wuzhuyu), and Xanthii Fructus (Xinyi). Its efficacy is subdued by sand.
Salty, neutral, slightly cold, astringent. Enters the Blood aspect of the Foot-Shaoyin Kidney Meridian. It primarily treats spermatorrhea and leukorrhea, drives out deficiency phlegm and old blood stasis, eliminates nocturnal emission during sleep, treats warm malaria, stops enuresis, and dissipates throat bi-syndrome. It arrests alternating tidal fever and reduces chest and diaphragm fullness. In cases where Liver deficiency causes Yang Qi to ascend to the vertex, this herb lowers it, allowing Yang to return naturally. Combined with Eucommiae Cortex (Duzhong), it stops night sweats. (Adding Ephedrae Caulis Cum Folio Root (Mahuanggen) yields better results.) Combined with Scrophulariae Radix (Xuanshen), it treats scrofula (Luoli) in both men and women. Combined with Bupleuri Radix (Chaihu), it treats abdominal pain. Paired with Rhei Radix et Rhizoma (Dahuang), it dissipates carbuncles and swellings. Paired with Testudinis Carapax et Plastrum (Biejia), it dissipates hypochondriac accumulations. Harmonized with Fritillariae Bulbus (Beimu), it dissipates phlegm nodules. Combined with Trichosanthis Radix (Huafen), it dissipates goiter and tumors, and also treats thirst resulting from the transformation of Baihe disease in Shanghan. Mixed with dried ginger powder and mixed with water for topical application on scrotal edema. (If the area feels hot like fire, reapply after drying; self-healing occurs when urination becomes smooth.) Grind for use. Long-term consumption damages the Middle Jiao Spleen Yang.
Processed with Shitingzhi (Alumen) and Sulfur.
Sweet, salty, cold. Stops thirst and removes heat. Resolves alcohol toxicity and clears red eyes. Excessive consumption induces wind and disturbs Qi.
Crab shell powder
Salty, cold. Clears heat and promotes dampness drainage. Combined with Indigo Naturalis (Qingdai) and mustard green juice, it treats cough due to phlegm-fluid retention. Paired with rice vinegar, mixed and applied topically for carbuncles, sores, redness, and swelling.
Sweet, salty, cold. Removes heat and promotes urination, dispels dampness and opens the stomach. Freshly mashed juice is applied topically for ding sores. Excessive consumption induces cough and allows cold qi to consume Kidney essence.
Crab shell
Salty, warm. Treats yin ulcers, stops dysentery, cures spermatorrhea, transforms phlegm-fluid, stops vomiting, and eliminates acid regurgitation.
Salty, cold. Enters the Foot-Jueyin Liver Meridian. Calms the mind and stabilizes the spirit, sharpens hearing and vision. Treats spermatorrhea and resolves measles toxin.
Select fresh pearl powder that has not been drilled or strung. Soak in human milk for three days, then boil, mash, and grind for use.