（见心部）
一名麒麟竭
〔害〕善收疮口，却能引脓，性急，不可多用，无瘀积者忌之。
〔利〕甘咸平，性急色赤，入心肝血分，散瘀生新，除血痛，治金疮折跌，疮口不合，
止痛
生肌。
〔修治〕出南番，磨之透甲，烧之有赤汁涌出，久而灰不变色者真。嚼之不烂，如蜡为
上。
假者，是海母血，味大咸，有腥气。须另研作粉筛过。若同众药捣，则化尘飞也。
〔害〕毕竟伐气之品，妇人血枯气上逆者，不可多用。
〔利〕甘苦平，香而不散，色紫入肝，能引血中之气，肝病用之多效。
〔害〕气味淡薄，与病无害。
〔利〕治肝气，诸书不载，近多用之。盖取木喜疏，蝴蝶善动之意尔。
〔修治〕形如皂荚，里多白瓤，剖开取出，如蝴蝶状。每张有子一粒，又名千张纸，钱
塘赵
学敏，己采入本草纲目拾遗。
〔害〕辛平有毒，《素问》治阳气太盛，病狂妄善怒者，用生铁落，正取伐木之义。《本
草
》载大清服法，言服铁伤肺者，余疑肝字为准。畏磁石皂荚。
〔利〕辛平，镇心平肝，定惊疗狂，消痈解毒。铁屑、铁精、铁锈、铁华，大抵借金气
以平
木坠下解毒，无他义也。铁砂，消水肿黄胆，散瘿瘤，重以镇坠，能伤气，肝肾气虚者，忌
用。
〔修治〕 砧上打落者，名铁落，即铁屑。如尘飞起者，名铁精。器物生衣者，名铁华。
针
砂，是作针家磨 细末也。须真钢砂乃堪用，人多以柔铁砂杂和之，飞为粉，人莫能辨。
（参见心部）
一名麒麟竭。
【害处】善于收敛疮口，但能引导脓液外泄，药性急烈，不可大量使用，体内无瘀血积滞者忌用。
【益处】味甘、咸，性平，药性急烈且色赤，入心和肝的血分，能消散瘀血、促进新血生成，消除血瘀疼痛，治疗金创骨折跌打损伤，使疮口愈合，具有止痛和生肌的功效。
【炮制】产于南洋番地，研磨时能穿透指甲，烧灼时有红色汁液涌出，久置后灰烬颜色不变的是真品。咀嚼不烂，质地如蜡的为上品。
假品是海母（水母）的血，味道极咸，有腥气。需要单独研磨成粉并过筛。如果与其他药物一起捣碎，则会化为灰尘飞散。
【害处】毕竟是耗伤正气的药物，妇女因血枯导致气机上逆者，不可大量使用。
【益处】味甘、苦，性平，香气浓郁但不发散，色紫入肝经，能引动血中的气机，治疗肝病多有效。
【害处】气味淡薄，对疾病无害。
【益处】治疗肝气郁结，历代医书未记载，近代多用之。大概是取树木喜欢舒展、蝴蝶善于飞舞的意象罢了。
【炮制】形状像皂荚，内部多有白色瓤膜，剖开后取出，状如蝴蝶。每张有一粒种子，又名千张纸，钱塘人赵学敏已将其采录进《本草纲目拾遗》。
【害处】味辛，性平，有毒。《素问》治疗阳气太盛，出现狂妄、易怒症状者，使用生铁落，正是取其“伐木”（克制肝木）的含义。《本草》中记载的大清服法，提到服用铁剂会伤肺，我怀疑这里的“肺”字应为“肝”字。畏忌磁石和皂荚。
【益处】味辛，性平，能镇心安神、平抑肝阳，定惊疗狂，消痈解毒。铁屑、铁精、铁锈、铁华，大抵是借助金的肃降之气来平抑肝木，起到坠下解毒的作用，没有其他深意。铁砂，能消除水肿黄疸，消散瘿瘤，因其质重具有镇坠作用，但容易耗伤正气，肝肾气虚者忌用。
【炮制】在砧板上敲打落下的，名为铁落，即铁屑。如灰尘般飞扬的，名为铁精。器物表面生成的锈衣，名为铁华。针砂，是制针工匠磨成的细末。必须使用真正的钢砂才堪用，人们常将柔铁砂掺杂其中，飞制成粉，常人难以辨别。
(See Section on Heart)
Also known as Qilin Jie (Kylin Blood).
[Harm] It is effective in contracting wound margins but can induce pus discharge. Its action is rapid, so it should not be used in large doses. It is contraindicated in cases without blood stasis accumulation.
[Benefit] Sweet and salty, neutral in nature. Rapid in action and red in color, it enters the Blood aspect of the Heart and Liver meridians. It dissipates blood stasis, generates new blood, alleviates blood-related pain, treats metal wounds and fractures/dislocations, promotes healing of non-healing ulcers, relieves pain, and promotes tissue regeneration.
[Preparation] Originates from Southern Barbarian lands. Authentic material grinds through fingernails and exudes red juice when burned; the ash remains unchanged after prolonged heating. The best quality does not disintegrate when chewed and feels like wax.
Counterfeit material consists of jellyfish blood, which tastes extremely salty and has a fishy odor. It must be ground separately into powder and sifted. If pounded together with other herbs, it will turn to dust and fly away.
[Harm] It is ultimately a substance that depletes Qi. It should not be used in large amounts by women suffering from blood depletion with rebellious Qi rising.
[Benefit] Sweet and bitter, neutral in nature. Fragrant but not dispersing, purple in color entering the Liver meridian. It guides Qi within the Blood. It is highly effective for treating Liver diseases.
[Harm] Its taste and aroma are faint and harmless to the disease.
[Benefit] Used to treat Liver Qi stagnation. Although not recorded in older texts, it is widely used recently. This likely derives from the symbolism of wood preferring to spread out and butterflies being fond of movement.
[Preparation] Resembles soap pods, containing much white pith inside. When split open, the inner part resembles a butterfly. Each sheet contains one seed. Also known as Qian Zhang Zhi (Thousand-Paper Leaf). Zhao Xuemin from Qiantang included it in *Bencao Gangmu Shiyi* (Supplement to Compendium of Materia Medica).
[Harm] Pungent, neutral, and toxic. In *Suwen* (Basic Questions), raw Tie Luo (Fallen Iron) is used to treat conditions of excessive Yang Qi manifesting as mania, madness, and irritability, precisely taking advantage of its "Wood-Subduing" (Metal overcoming Wood) property. The *Bencao* mentions that ingesting iron harms the Lung; I suspect the character "Lung" here should actually be "Liver". It is incompatible with Cishi (Magnetite) and Zaojia (Gleditsia Sinensis Fruit).
[Benefit] Pungent, neutral. Calms the Heart and pacifies the Liver, settles fright and treats mania, resolves abscesses, and detoxifies. Tie Xie (Iron Filings), Tie Jing (Iron Essence), Tie Xiu (Iron Rust), and Tie Hua (Iron Flowers) generally utilize the descending nature of Metal to subdue Wood and descend/toxify, without other profound meanings. Tie Sha (Iron Sand) reduces edema and jaundice, dissipates goiters/nodules. Due to its heavy nature, it has a sinking effect but can damage Qi; it is contraindicated in patients with Qi deficiency of the Liver and Kidneys.
[Preparation] Material beaten off an anvil is called Tie Luo (Fallen Iron), which is essentially iron filings. Material flying up like dust is called Tie Jing (Iron Essence). Rust growing on vessels is called Tie Hua (Iron Flower). Zhen Sha (Needle Sand) is the fine powder produced by needle-makers grinding needles. Only genuine steel sand is suitable for use; people often mix soft iron sand into it, flying it into powder, making it indistinguishable to laymen.