味咸。性平。无毒。得水中之阴气而生。可升可降。阴也。畏旋复花。
【主治】主目障翳痛青盲。久服益精。（别录） 肝肺风热。骨蒸劳热。（李 ） 通五
淋。（
【归经】入肝经。为专除风热之品。
【前论】无己曰。石决明咸寒。入血除热。又能入肾补阴。
鳌按、石决明大补肝阴。肝经不足者。断不可少。
【炮制】李 曰。凡用。磨去粗皮。面裹煨熟。捣研极细。
味咸。性寒。无毒。禀水中之阴气而生。降也。阴也。曰海者。别于江湖地泽所生也。
【主治】主热痰。湿痰。老痰。顽痰。疝气。白浊。带下。同香附末、姜汁调服。主心
痛。
散肿毒。治
【归经】入心肾二经。为软坚润下之品。
【前论】仲淳曰。诸痰皆火气上炎煎熬津液而成。得此能软坚润下。故痰消。
【禁忌】经疏曰。虽善消痰积血块。然脾胃虚寒。宜少用。
味咸。性平。无毒。禀水中阳气而生。降也。阴中阳也。
【主治】主一切血气。冷气。症癖。火 醋淬。醋丸服。（日华） 化痰积。消血块。（丹
溪）
【归经】入肝经。兼入肺脾二经。为软坚散结之品。
【前论】吴瑞曰。瓦楞消痰。其功最大。凡痰膈病用之如神。
【炮制】雷公曰。取陈久者。火 赤。米醋淬三度。出火毒。研粉。
以上泻剂介部
[Concha Heteroconcha] (Shi Jue Ming)
Salty in flavor. Neutral in nature. Non-toxic. Born from the yin qi of water. Its action can ascend and descend. It is Yin. It fears Inula Flower (Xuan Fu Hua).
【Indications】Mainly treats visual obstructions, painful nebulae (corneal opacities), and blindness. Long-term use benefits essence. (From *Bie Lu*) Treats wind-heat of the Liver and Lung meridians, bone-steaming consumptive fever. (From Li Xun) Unblocks the Five Stranguries (Wu Lin).
【Meridian Tropism】Enters the Liver Meridian. It is a specialized product for eliminating wind-heat.
【Previous Discussions】Li Xun said: Concha Heteroconcha is salty and cold, enters the blood level to remove heat, and can also enter the Kidney to tonify Yin.
Zhao Xuemin's Note: Concha Heteroconcha greatly tonifies Liver Yin. For those with insufficiency of the Liver Meridian, it is absolutely indispensable.
【Processing】Li Xun said: When used, grind off the rough skin, wrap in flour, bake until cooked, crush, and grind into an extremely fine powder.
[Concha Meretricis Pulverata] (Hai Ge Fen)
Salty in flavor. Cold in nature. Non-toxic. Born from the yin qi of water. Its action descends. It is Yin. The term "Sea" is used to distinguish it from those born in rivers, lakes, or marshes.
【Indications】Mainly treats Phlegm-Heat, Damp-Phlegm, Old Phlegm, Stubborn Phlegm, Hernia, White Turbidity, and Leukorrhea. Mixed with Cyperi Rhizoma Powder (Xiang Fu Mo) and Ginger Juice, it treats Heart Pain. Disperses swelling and toxicity.
【Meridian Tropism】Enters the Heart and Kidney meridians. It is a product that softens hardness and promotes downward movement.
【Previous Discussions】Zhang Suichen (Zichun) said: All phlegm is formed by fire qi flaming upward and scorching body fluids. With this herb, hardness is softened and downward movement is promoted, thus the phlegm dissipates.
【Contraindications】Miao Xiyong (Jingshu) said: Although it excels at resolving phlegm accumulations and blood masses, it should be used sparingly by those with Spleen-Stomach deficiency-cold.
[Concha Arcae] (Wa Leng Zi)
Salty in flavor. Neutral in nature. Non-toxic. Born from the yang qi of water. Its action descends. It is Yang within Yin.
【Indications】Mainly treats all types of Blood-Qi stagnation, Cold Qi, and Masses (Zheng Pi). Calcined red over fire, quenched in Vinegar, and taken as Vinegar pills. (From Ri Hua) Resolves phlegm accumulations, eliminates blood masses. (From Zhu Danxi)
【Meridian Tropism】Enters the Liver Meridian, and concurrently enters the Lung and Spleen meridians. It is a product that softens hardness and dissipates nodules.
【Previous Discussions】Wu Rui said: Concha Arcae resolves phlegm; its efficacy is greatest. For any Phlegm-Chest disease, using it is like divine assistance.
【Processing】Lei Gong said: Take aged shells, calcine them over fire until red, quench three times in Rice Vinegar, eliminate fire toxicity, and grind into powder.
The above are Bivalve Category herbs for Purging Agents.