mother of pearl

　　Mother-of-pearl is the shell of the clam Hyriopsis cumingii (Lea), Cristaria plicata (Leach) or the pearl oyster Pteria martensii (Dunker). The first two are produced in rivers and lakes across the country; the latter is mainly produced along the coasts of Hainan Island, Guangdong and Guangxi. It can be harvested throughout the year, removed from the flesh, washed and dried. Use raw or forged. Break into pieces when used.

　　[Properties] Salty, cold. Returns to liver and heart meridian.

　　[Efficacy] Calming the liver and subduing yang, calming the nerves, calming panic and improving eyesight.

　　【application】

　　1. Hyperactivity of liver yang, dizziness and dizziness. This product is salty and cold and enters the liver. It is similar to Cassia. It has the effect of calming the liver and subduing yang, clearing and purging liver fire. It is suitable for headaches, dizziness, tinnitus, palpitations and insomnia caused by insufficient liver yin and excessive liver yang. It is often combined with white peony root and raw peony root. Rehmannia glutinosa and Longqia are used equally, such as Jiayiguizang Decoction ("Yi Chunshengyi"); for treating dizziness and headache caused by liver yang, it is often used together with liver-calming drugs such as Ju Ming, oyster, magnetite, etc. to enhance the effect of calming the liver and subduing yang. If the liver yang is excessive and the liver heat is irritable and irritable, it can be combined with liver-clearing substances such as Uncaria, chrysanthemum, and prunella vulgaris.

　　2. Panic, insomnia, and restlessness. This quality re-enters the Heart Sutra and has the effect of calming the nerves and calming the nerves. To treat palpitations, insomnia, and restlessness, it can be combined with cinnabar, dragon bone, amber and other tranquilizers, such as mother-of-pearl pills ("Puji Benshi Prescription"); if combined with gastrodia elata, uncaria, araceae and other wind-relieving and antispasmodic medicines, it can be used to treat epilepsy, convulsions, etc.

　　3. Red eyes and blurred vision. This product is cold in nature and clears away heat. It has the effect of clearing the liver and improving eyesight. It is used to treat liver heat, red eyes, shyness, photophobia, and nebula. It is often combined with Cassia, chrysanthemum, and plantain. It can clear the liver, improve eyesight, and reduce nebula. It is used to treat liver deficiency. If you have dark eyes and blurry vision, it can be combined with wolfberry, ligustrum lucidum, black sesame, etc. to nourish the liver and improve eyesight; if you have liver deficiency and have blurred vision or night blindness, you can boil it with atractylodes, pig liver or chicken liver and take it. Nowadays, pearl layer powder is used to make eye ointment for external use, which has certain curative effect in treating cataracts, keratitis and conjunctivitis.

　　In addition, this product can be ground into fine powder for external use. It can remove dampness and converge, and can be used to treat eczema and itching, ulcers that do not close for a long time, and aphthous ulcers. Taking nacre powder orally to treat gastric and duodenal ulcers has a certain effect.

　　[Usage and Dosage] Decoction and take, 10~25g; it is better to break it into pieces and fry it first. Or take into pills or powders. Appropriate amount for external use.

　　[Usage Precautions] This product is a soothing product, so pregnant women should use it with caution if the spleen and stomach are deficient.

　　[Identification and use of medicine] Mother of pearl and Cassia are both salty and cold shellfish. They can calm the liver and subdue yang, clear the liver and improve eyesight. They are used to treat hyperactivity of liver yang, headache, dizziness, tinnitus and eye diseases due to liver heat, such as dizziness and blindness due to heat in the liver meridian. However, Cassia has a strong effect on clearing the liver and improving eyesight, and has the power of nourishing liver yin. It is especially suitable for eye diseases such as blindness, dark eyes, and blue blindness caused by blood deficiency and liver heat, as well as dizziness, tinnitus and other symptoms caused by yin deficiency and yang hyperactivity. Mother-of-pearl also enters the heart meridian and has the effect of calming the nerves and calming the nerves, so it is often used for mental diseases such as insomnia, irritability, and restlessness.

　　[Abstract from ancient books]

　　1. "Compendium of Materia Medica": "It calms the soul, stops nocturnal emission and white turbidity, and relieves acne and cures poison. ”

　　2. "New Ginseng in Decoction Pieces": "It calms the liver and subdues yang, calms the mind and soul, calms epilepsy, relieves heat, pimples and nebula. ”

　　【Modern Research】

　　1. Chemical composition: This product contains phosphatidylethanolamine, galactosylceramide, hydroxy fatty acids, volute prion, calcium carbonate, calcium oxide and other oxides, a small amount of magnesium, iron, silicate, salt, etc., and contains a variety of amino acids.

　　2. Pharmacological effects: Injecting pearl powder into the stomach of mice can significantly reduce their spontaneous activities, and has a significant synergistic effect on the central inhibition of sodium pentobarbital; the salt hydrolysis product of pearl nacre can increase the heartbeat amplitude of the isolated heart; nacre injection has a protective effect on liver damage caused by carbon tetrachloride; gavage nacre powder has a significant inhibitory effect on stress gastric ulcer in rats.

　　3. Clinical research: It is reported that pearl film is used to treat aphthous ulcers caused by different causes. Significant analgesic, anti-inflammatory and ulcer healing effects can be seen 0.5 to 1 minute after applying the film (Marine Medicine, 1984, 4:43); 313 cases of hemorrhoids were treated with mother-of-pearl liquid compression ligation, and the recent effective rate was 100% (Hubei Journal of Traditional Chinese Medicine, 1983, 5:26). In addition, mother-of-pearl is used to treat plateau vascular headaches, senile cataracts, ulcers, etc.