This product is the clam shell or pearl of Hyriopsis cumingii (Lea) and Cristariaplicata (Leach). Pteria margaritifera (L.) , Pteria martensii (Dunker) and other shellfish shells pearl layer. Triangle clams and rice-crested clams are produced in rivers and lakes all over the country, while pearl clams and pearl clams are mainly produced along the coasts of Hainan Island, Guangdong and Guangxi. Can be harvested year-round. After removing the flesh, boil the shells in alkaline water, rinse them, scrape off the outer black skin, and dry them in the sun. Use raw or forged. Break into pieces when used.

Treatment of influenza, enterovirus, and various viral colds, Chinese medicine is more refined, non-toxic, and effective than Western medicine

salty, cold. act on liver and heart channels.

[Efficacy]

pacifying liver and subduing yang, clearing heat and improving vision, setting heart and calming mind.

[Indications]

1. Used for ascendant hyperactivity of liver yang, dizziness and dizzy vision. Nacre has similar pacifying liver and subduing yang and liver fire effects as Abalone Shell. Often used together with oyster shell, Peony Root, Magnetite and other liver-pacifying medicinals to treat liver yang vertigo, headache, tinn itus ; If there is ascendant hyperactivity of liver yang and liver heat dysphoria and irritability, it can be cleared with Uncaria, Chrysanthemum Flower, Prunella, etc. liver heat combination of medicinals.
2. Used for red eye swelling and blurred vision. This product is salty and cold. It also has the effect of treating liver heat and improving vision. It is used to treat liver heat red eye and nebula disorders. It is often used with Abalone Shell, Chrysanthemum Flower, Plantain Seed combination of medicinals can clear heat and improve vision and reduce nebula; used to treat liver deficiency and dim vision, it can be used with Barbary Wolfberry Fruit Seed, Atractylodes Rhizome, black sesame and other combinations of medicinals can nourishing blood and improving vision; if combined with Atractylodes Rhizome, pig liver or Boiling chicken liver and taking it together can cure night blindness nyctalopia.
3. Used for palpitation due to fright insomnia, restlessness. This product has high quality, penetrates the heart, and has the effect of calming the mind and calming the spirit. It can be combined with tranquilizers such as Cinnabar, Fossil Bone, amber and other medicinals to treat palpitation insomnia and restlessness; it can also be used with Gastrodia Tuber, Uncaria, Arisaema and other combinations of medicinals for treating epilepsy and infantile convulsion.
4. In addition, this product can be ground into fine powder for external use and can be used for drying dampness to astringe sores and eczema cutaneous pruitus. In recent years, pearl powder has been used orally to treat gastric and duodenal ulcers, or it can be made into eye ointment for external use to treat internal visual obstruction, keratitis and conjunctivitis, all of which have considerable effects.

[Documentation]

1. "Chinese Medical Dictionary": "Nourishing liver yin, clearing liver heat. Treating madness, fright epilepsy, dizziness, tinnitus, heartbeat, chest abdominal distension and fullness, women's blood heat, metrorrhagia, convulsions in children "
2. Yinpian Xincan: "pacifying liver and subduing yang, soothing the soul, calming epilepsy, eliminating heat fullness, eye nebula."

[Usage and Dosage]

Decoction, 15-30g, should be broken into pieces to be decocted first. Appropriate amount for external use.

[Modern Pharmacology]

This product contains more than 90% calcium carbonate and about 0.34% organic matter; it also contains a small amount of magnesium, iron, silicate, sulfate, phosphate and oxide, and contains a variety of amino acids.

• The active ingredient is calcium carbonate, which can neutralize gastric acid.
• Nacre 30% sulfuric acid hydrolyzate can increase the heartbeat amplitude of isolated hearts;
• Ether extract can inhibit the contraction of isolated intestines and uterus, and prevent shock and death in guinea pigs caused by histamine;
• Nacre It has a protective effect on liver injury caused by carbon tetrachloride.