1. Aliases

Iron absorption stone, needle absorption stone, playful iron stone, Xuanshi, Chushi, Lingmagnetite, and Sheshi.
2. Distribution
Produced in Liaoning, Hebei, Henan, Shandong, Jiangsu, Anhui, Fujian, Sichuan, Yunnan, Guangdong, Guangxi and other places.
3. Harvesting and processing
It can be excavated throughout the year. Remove debris and soil after excavation.
4. Characteristics of medicinal herbs
Irregular block shaped or slightly square, often with edges and varying sizes. The surface is gray black or brown, with a metallic luster, and some are accompanied by iron filiform brown powder. Weight, hard texture, uneven cross-section, gray black or brown. Having magnetism, the magnetism gradually weakens over time. It has a earthy smell and is tasteless.
5. Nature, taste, and meridian tropism
Cold in nature and salty in taste. Guigan Meridian, Heart Meridian, and Kidney Meridian.
6. Effect and function
Calm the liver and subdue yang, have bright ears and eyes, calm the mind and calm the nerves, and absorb qi to relieve asthma. An important sedative that belongs to the subcategory of sedatives.
7. Clinical applications
Dosage 9-30 grams, fry first. Used to treat dizziness, blurred vision, tinnitus and deafness, palpitations, insomnia, kidney deficiency, and asthma.
8. Pharmacological research
Magnets mainly contain ultra dispersed magnetic particles, which can increase the number of hemoglobin, red blood cells, and white blood cells in the blood of experimental rats, prolong blood coagulation time, increase plasma fibrinolytic activity, and increase neutrophil phagocytic response. Suspension has sedative, analgesic, anticonvulsant, anti-inflammatory, and hemostatic effects.
9. Chemical composition
Magnets mainly contain ferric oxide, of which ferric oxide accounts for 31% and ferric oxide accounts for 69%. In addition, it also contains 27 elements such as aluminum, silicon, phosphorus, calcium, magnesium, etc.
10. Taboos for use
Patients with weak spleen and stomach should take it with caution and should not take it excessively or for a long time.
11. Compatibility prescription
① Treating furuncle and swelling: Crush the magnet into powder, seal it with alkali, vinegar, and extract the root. (The Verification Formula of Ancient and Modern Records)
② To treat various types of swelling and poisoning: 9 grams of magnet, 120 grams of gold and silver vine, 240 grams of Huangdan, and 1 pound of sesame oil. Apply the ointment as usual. ("The Secret of Qiankun")
③ To treat golden sores, relieve pain, and cut off blood: apply magnetic powder. (Qian Jin Yao Fang)
④ Governance of Yang: Five pounds of magnet (research). Three douches of sake, soaked for two or seven days. One suit three in one, day and night one. (Qian Jin Yao Fang)
⑤ Brightening the eyes and enhancing eye power: 120g Divine Comedy, 60g Magnet, 30g Bright Sand. At the end of the three flavors, honey is refined into pills, which are as big as plane trees. Drink and take thirty pills. On the third day, I can't help but. (Divine Comedy Pill in "Qian Jin Yao Fang")
⑥ To treat deafness and tinnitus, it often sounds like feng shui: 15 grams of magnet (crushed, cotton wrapped), half a pound of Mutong and half a pound of Acorus calamus (soaked in rice for one or two days, cut and roasted), served in a silk bag, and soaked in a bucket of wine. Cold for seven days, heat for three days, drink three times a day and then again. (From "The Complete Records of Saint Ji" Magnet Wine)