平，微温。主明目，化铜。疗惊悸，定心气，小儿风痫，阴 脱肛。
陶隐居云∶铁落是染皂铁浆。生铁是不被 、釜之类，钢铁是杂炼生 作刀镰者。铁
精出
灶中，如尘，紫色轻者为佳，亦以摩莹铜器用之。唐本注云∶单言铁者， 铁也。铁落是
家烧铁赤沸，砧上 之，皮甲落者。夫诸铁疗病，并不入丸散，皆煮取浆用之。若以浆为
铁落，钢生之汁，复谓何等？落是铁皮滋液，黑于余铁。陶谓可以染皂，云是铁浆，误矣。
又铁屑炒使极热，用投酒中饮酒，疗贼风痉。又裹以熨腋，疗胡臭有险。今按陈藏器本
草云
∶凡言铁疗病，不入丸散，皆煮浆用之。按今针砂、铁精，俱堪染皂，铁并入丸散。臣禹
锡
等谨按陈藏器云∶铁浆，取诸铁于器中，以水浸之，经久色青沫出。即堪染帛成皂，兼解
诸
物毒入腹，服之亦镇心，明目。主癫痫发热，急黄狂走，六畜癫狂。人为蛇、犬、虎、野狼、
毒恶虫等啮，服之毒不入内也。又云铁 ，主恶疮蚀 ，金疮，毒物伤皮肉，止风水不入，
入
水不烂，手足皲坼，疮根结筋，瘰 ，毒肿。染髭发令永黑。并及热末凝涂之，少当干硬，
以竹木 火于刀斧刃上，烧之津出，如漆者是也。一名刀烟，江东人多用之防水。项边 子
，以桃核烧熏。又云∶杀虫立效。又云∶淬铁水，味辛，无毒。主小儿丹毒，饮一合。此打
铁器
时，坚铁槽中水。又云∶针砂，性平，无毒。堪染白为皂，及和没食子染须至黑。飞为粉，
功
用如铁粉。炼铁粉中亦别须之。针是其真钢砂堪用，人多以杂和之，谬也。又云∶ 下铁
屑
，味辛，平，无毒。主鬼打，鬼注，邪气。水渍搅令沫出，澄清去滓，及暖饮一、二盏。又
云∶刀刃，味辛，平，无毒。主蛇咬毒入腹者，取两刀于水中相磨，饮其汁。又∶两刀于耳
门上相
磨敲作声，主百虫入耳，闻刀声即自出也。日华子云∶铁屑，治惊邪癫痫，小儿客忤，消食
及冷气，并煎汁服之也。又云得犁 尖浸水，名为铁精，可制朱砂、石亭脂、水银毒。
图经文具铁条下。
圣惠方∶阴脱。铁精、羊脂二味，搅令稠，布裹炙热，熨推纳之，瘥。又方食中有蛊毒，
令
人腹
内坚痛，面目青黄，淋露骨立，病变无常。用铁精细研，捣鸡肝和为丸如梧桐子大。食前后
酒下五丸。百一方∶产后阴下脱，铁精粉推纳之。又方∶地骨刺人毒痛。以铁精粉如大豆，
以管
吹疮内。子母秘录疗阴肿，铁精粉敷上。姚和众∶治小儿因痢肛门脱，以铁精粉敷之。太清
服炼灵砂法云∶铁，性坚，服之伤肺。
性味平和，微温。主治明目，化铜。治疗惊悸，安定心气，小儿风痫，阴脱及脱肛。
陶隐居说：铁落是染黑铁器时的铁浆。生铁是指未经锻造的、用于制作釜之类的铁块；钢铁是将生铁杂炼后制成刀镰的铁。铁精出自灶中，状如灰尘，紫色且质地轻的为佳，也用来打磨抛光铜器。《唐本草》注解说：单称“铁”的，就是铁。铁落是家中烧铁至赤热沸腾时，在砧板上捶打，剥落的皮甲状物质。各种铁类药物治疗疾病，都不入丸剂和散剂，都是煮取铁浆使用。如果将铁浆称为铁落，那钢铁产生的汁液又该称为什么呢？铁落是铁皮滋生的液体，颜色比其余铁类更黑。陶弘景认为可以染黑丝织品，说是铁浆，这是错误的。
另外，将铁屑炒至极热，投入酒中饮酒，可治疗贼风痉病。或者包裹起来熨烫腋下，治疗狐臭有危险（指可能无效或有害）。现在考察陈藏器的《本草》，说：凡是说铁类药物治疗疾病，不入丸散，都是煮浆使用。如今针砂、铁精，都可以染黑丝织品，铁也可以并入丸散。臣禹锡等人谨按陈藏器所说：铁浆，是将各种铁放入容器中，用水浸泡，时间久了颜色变青并出现泡沫。即可用来染帛成黑色，兼能解诸物毒入腹，服用也能镇心安神，明目。主治癫痫发热，急黄狂走，六畜癫狂。人被蛇、犬、虎、野狼、毒恶虫等咬伤，服用它可使毒素不进入体内。又说铁锈，主治恶疮蚀肉，金创，毒物伤皮肉，防止风水侵入，入水不烂，手足皲裂，疮根结筋，瘰疬，毒肿。染胡须头发使其永远变黑。以及用热末凝涂之，稍干硬后，用竹木摩擦火于刀斧刃上，烧出津液，像漆一样的就是。一名刀烟，江东人多用它防水。项边瘿子，用桃核烧熏。又说：杀虫立效。又说：淬铁水，味辛，无毒。主治小儿丹毒，饮一合。这是打铁器时，坚铁槽中的水。又说：针砂，性平，无毒。可染白为皂，以及和没食子染须至黑。飞研为粉，功用如铁粉。炼铁粉中也需单独提取。针砂是真钢砂可用，人多以杂和之，是错误的。又说：下铁屑，味辛，平，无毒。主治鬼打，鬼注，邪气。用水浸泡搅动使泡沫产生，澄清去滓，加热饮用一至二盏。又说：刀刃，味辛，平，无毒。主治蛇咬毒入腹者，取两把刀在水中相互磨擦，饮用其汁液。又说：两把刀在耳门上相互磨擦敲击发出声音，主治百虫入耳，听到刀声虫子即自行出来。日华子说：铁屑，治疗惊邪癫痫，小儿客忤，消食及冷气，都煎汁服用。又说得到犁尖浸水，名为铁精，可制朱砂、石亭脂、水银毒。图经文具载于铁条下。
《圣惠方》：阴脱。铁精、羊脂两味药，搅令稠厚，布裹炙热，熨推纳入，痊愈。又一方：食物中有蛊毒，使人腹内坚痛，面目青黄，淋露骨立，病变无常。用铁精细研，捣鸡肝和为丸如梧桐子大。食前后酒下五丸。《百一方》：产后阴下脱，铁精粉推纳之。又一方：地骨刺人毒痛。以铁精粉如大豆，以管吹入疮内。《子母秘录》疗阴肿，铁精粉敷上。姚和众：治疗小儿因痢疾肛门脱出，以铁精粉敷之。《太清服炼灵砂法》说：铁，性坚，服用会伤肺。
Nature and flavor: Neutral, slightly warm. Indications: Improves vision, dissolves copper. Treats palpitations and fright, stabilizes heart qi, pediatric wind epilepsy, prolapse of the uterus (Yin tuō), and rectal prolapse.
Tao Hongjing stated: Tie Luo (Iron filings) is the iron slurry used for dyeing black ironware. Sheng Tie (Raw iron) refers to un-forged iron blocks used for making cauldrons and similar vessels. Gang Tie (Steel) is iron made by smelting raw iron impurities to produce knives and sickles. Tie Jing (Iron essence) comes from the furnace, resembling dust; those that are purple and light in weight are superior. It is also used for polishing and brightening copper vessels. The *Tang Bencao* commentary notes: When referred to simply as "Tie" (Iron), it means iron itself. Tie Luo (Iron filings) is the scale-like skin shed when iron is heated red-hot in a household forge and hammered on an anvil. Various iron preparations for treating diseases are not used in pills or powders but are boiled to extract the slurry. If one calls the slurry "Tie Luo" (Iron filings), what should the juice produced from steel be called? Tie Luo (Iron filings) is the liquid exuded from iron scales, darker than other irons. Tao believed it could dye silk black, calling it iron slurry, which was an error.
Furthermore, heating Tie Xie (Iron filings) until extremely hot and adding them to wine for drinking treats Zei Feng Jing (Wind-induced spasms). Alternatively, wrapping them and applying heat to the axilla treats Hu Chou (Fox odor/bromhidrosis), though this method is risky. Examining Chen Cangqi's *Bencao*: Whenever iron is said to treat disease without entering pills/powders, it is boiled into slurry. Currently, Zhen Sha (Needle sand) and Tie Jing (Iron essence) can both dye silk black, and iron can be included in pills/powders. Ministers Yu Xi et al. respectfully note according to Chen Cangqi: Tie Jiang (Iron slurry) is obtained by soaking various irons in water in a vessel for a long time until the color turns green and foam appears. It can dye fabric black and also detoxifies poisons ingested into the abdomen. Ingestion calms the heart, improves vision, and treats epilepsy with fever, acute yellow jaundice with mania and running about, and livestock epilepsy. If bitten by snakes, dogs, tigers, wild wolves, or venomous insects, ingestion prevents toxins from entering the interior. Also, Tie Xiu (Iron rust) treats evil sores eating flesh, traumatic injuries from metal weapons, skin/muscle damage from toxic substances, prevents wind-water invasion, prevents rotting in water, treats cracked hands/feet, knotted sinews at sore roots, scrofula, and toxic swelling. It dyes beard and hair permanently black. Applying hot powder paste, which hardens slightly, then rubbing bamboo/wood against fire on knife/axe blades to extract a lacquer-like fluid is known as Dao Yan (Knife smoke), widely used in Jiangdong for waterproofing. Goiters on the neck are treated by fumigation with burned peach pits. It also kills parasites effectively. Cui Tie Shui (Quenching iron water) is pungent, non-toxic, and treats pediatric Dan Du (Erysipelas); drink one he. This is the water from the iron trough when forging tools. Zhen Sha (Needle sand) is neutral, non-toxic. It dyes white silk black and mixes with Myrobalan to dye whiskers black. Refined into powder, its function is like Tie Fen (Iron powder). It must be separately extracted from refined iron powder. True steel sand is usable, but people often mix impurities, which is erroneous. Xia Tie Xie (Settled iron filings) is pungent, neutral, non-toxic. Treats Gui Da (Ghost strike), Gui Zhu (Ghost fixation), and evil qi. Soak in water, stir to create foam, clarify, remove dregs, warm, and drink one to two cups. Ren Dao (Blade edges) are pungent, neutral, non-toxic. For snakebite with toxin entering the abdomen, rub two knives together in water and drink the juice. Rubbing two knives together above the ear produces sound, treating insects entering the ear; hearing the sound causes them to exit. Ri Huazi stated: Tie Xie (Iron filings) treat fright, evil, epilepsy, pediatric Ke Wu (Guest fright), digest food, and cold qi; all taken as decoction. Obtaining water infused with plowshare tips is named Tie Jing (Iron essence), which can detoxify Cinnabar, Shu Ting Li (Stibnite), and Mercury. Detailed illustrations are under the Iron Strip entry.
*Shenghui Fang*: For Yin Tuō (Uterine prolapse). Mix Tie Jing (Iron essence) and Yang Zhi (Sheep fat) until thick, wrap in cloth, heat, apply via moxibustion/ironing, push back in, and cure. Another formula: For Gu Du (Gu poison) in food causing abdominal hardness/pain, blue-yellow complexion, emaciation, and unpredictable changes. Grind Tie Jing (Iron essence) finely, mix with chicken liver, form pills like wutong seeds. Take five pills with wine before/after meals. *Baiyi Fang*: For postpartum uterine prolapse, insert Tie Jing powder. Another formula: For pain from Digu thorn pricks. Apply Tie Jing powder size of a soybean, blow into the wound using a tube. *Zimu Milu*: For Yin Zhong (Genital swelling), apply Tie Jing powder externally. Yao Hezhong: For pediatric rectal prolapse due to dysentery, apply Tie Jing powder externally. *Taiqing Fuliang Lingsha Fa*: Iron is hard/natured firmly; ingestion injures the lungs.