附铁 淬铁水针砂锻 下铁屑刀刃犁 尖
铁精（出神农本经）主明目化铜（以上朱字神农本经）疗惊悸定心气小儿风痫阴溃脱肛
○锻
肉止风水不入入水不烂手足皲折疮根结筋瘰 毒肿染髭发令永黑并及热未凝涂之少顷当干硬
项边 子以桃核烧熏之又杀虫立效○淬铁水味辛无毒主小儿丹毒饮一合○针砂性平无毒堪染
白为皂及和没石子染须至黑飞为粉功用如铁粉○刀刃味辛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○铁屑治惊邪癫痫小儿客
忤消食及冷气并煎汁服之○犁 尖浸水名为铁精可制朱砂石亭脂水银毒（以上黑字名医所
录）
【地】（图经曰）旧不着所出州郡今江南西蜀有炉冶处皆有之乃锻铁灶中飞出如尘紫色而轻
虚
可以摩莹铜器者是也（日华子云）犁 尖浸水名为铁精二说意实矛盾谨考诸方所用者皆曰铁
精
粉诚如经之所云彼犁 浸水仅可制朱砂石亭脂水银毒于治病之功无所取矣及锻 下铁屑
乃铁砧也此炉冶处打铁砧下屑耳又铁 以竹木 火于刀斧刃上烧之津出如漆者一名刀烟江东
人多用之以防水是矣若淬铁水此打铁器时坚铁槽中水也针砂即作针家磨 之细末尔若其治病
之功当各适其用焉【时】（采）无时【用】粉【质】类尘而轻虚【色】紫【味】辛【性】平
微
温【气】气浓味薄阳中之阴【臭】腥【主】惊悸风痫【治】（疗）（别录云）产后阴下脱以粉
推
内即入蛇骨刺人毒痛以粉一匕管吹疮内并敷阴肿小儿因痢肛门脱【合治】合羊脂搅令稠布裹
炙热熨阴脱○合鸡肝和为丸桐子大每服五丸酒下治食中有蛊毒腹内坚痛面目青黄淋露骨立病
变无常【禁】服多伤肺
附铁、淬铁水、针砂、锻铁屑、刀刃、犁尖。
铁精（出自《神农本草经》）：主要功效为明目，能化解铜毒。（以上朱字部分引自《神农本草经》）治疗惊悸，安定心气；治疗小儿风痫、阴部溃烂、脱肛。
○ 锻铁屑：用于止风水（风邪与水湿相搏之病），入水不烂，治疗手足皲裂、疮根结聚、筋瘰疬、毒肿。染髭发可使永久变黑。以及热未凝固时涂敷，片刻后当干硬。项边子用桃核烧熏，又能杀虫，立见成效。
○ 淬铁水：味辛，无毒。主治小儿丹毒，饮用一合。
○ 针砂：性平，无毒。可用于将白物染成皂色，及与没石子配合染须至黑色。飞制为粉，功用如同铁粉。
○ 刀刃：味辛，无毒。主治蛇咬毒入腹者，取两把刀在水中相互研磨，饮其汁液；又取两把刀在耳门上相互研磨敲击发出声响，主治百虫入耳，听到刀声虫子即自行出来。
○ 铁屑：治疗惊邪癫痫、小儿客忤（外邪侵袭所致的小儿急惊风等症）、消食及冷气，均煎汁服用。
○ 犁尖浸水名为铁精，可制约朱砂、石亭脂、水银的毒性。（以上黑字部分为名医所录）
【产地】（《图经本草》曰）：旧籍未注明出产州郡，如今江南、西蜀有冶炼之处皆有此物。乃是从锻铁灶中飞出如尘般的紫色、轻虚之物，可以用来磨莹铜器。（日华子云）犁尖浸水名为铁精，这两种说法意思实在矛盾。谨考诸方所用者皆称为“铁精粉”，确实如经文所说；而犁尖浸水仅可制约朱砂、石亭脂、水银的毒性，在治疗疾病方面并无取效。至于锻铁下落的铁屑，乃是铁砧上的东西，这是炉冶处打铁时砧下的碎屑罢了。另外，铁以竹木摩擦火于刀斧刃上烧之，津液流出如漆者，一名刀烟，江东人多用来防水，这是对的。若淬铁水，则是打铁器时坚铁槽中的水。针砂即作针家磨制的细末罢了。如果论其治病之功，应当各自适合其用途。
【采集时间】无固定时节。
【用法】研粉。
【质地】类似灰尘，轻而虚。
【颜色】紫色。
【味道】辛。
【性质】平，微温。
【气味】气浓味薄，属阳中之阴。
【气味特征】腥。
【治疗】（《别录》云）产后阴部下脱，以粉推入内即可收回；蛇骨刺人毒痛，以粉一匕装入管中吹入疮内并敷贴；阴肿；小儿因痢疾导致的肛门脱出。
【配伍治疗】配合羊脂搅令稠厚，布裹炙热熨烫阴部脱出。○ 配合鸡肝和丸，如梧桐子大，每服五丸，酒送下，治疗食中有蛊毒、腹内坚痛、面目青黄、淋露骨立、病变无常。
【禁忌】服用过多伤肺。
Ferro (Iron), Quenching Iron Water, Needle Sand, Forged Iron Filings, Blade Edge, Plowshare Tip.
Tie Jing (Iron Essence) (from *Shennong Bencao Jing*): Primarily brightens the eyes and resolves copper toxicity. (The above text in red characters is cited from *Shennong Bencao Jing*). Treats palpitations (*Jingji*), calms the heart qi; treats pediatric wind epilepsy (*Xiao'er Fengxian*), ulceration of the yin region, and rectal prolapse.
○ Forged Iron Filings: Used to stop Fengshui (pathogenic wind combined with water-dampness), does not rot when immersed in water, treats chapped hands and feet, indurated sores, tendon nodules (*Luo Li*), and toxic swellings. Dyes beard and hair black permanently. When applied while hot and not yet solidified, it dries and hardens after a short time. Burning peach kernels for fumigation also kills parasites effectively.
○ Quenching Iron Water: Pungent in flavor, non-toxic. Mainly treats pediatric erysipelas (*Dan Du*); drink one he.
○ Needle Sand: Neutral in nature, non-toxic. Can be used to dye white substances into soap-black color, and when mixed with Myrobalan (*Mei Shizi*) to dye beard hair black. Processed into fine powder by flying, its efficacy is similar to that of Iron Powder.
○ Blade Edge: Pungent in flavor, non-toxic. Mainly treats snakebite poison entering the abdomen: take two blades, grind them against each other in water, and drink the juice. Also, take two blades, grind them against each other over the ear opening to make sound; this treats insects entering the ear—the insect will exit upon hearing the blade sound.
○ Iron Filings: Treats fright evil (*Jing Xie*), epilepsy, pediatric external pathogen shock (*Ke Wu*), aids digestion, and resolves cold qi; all taken as decocted juice.
○ Plowshare Tip soaked in water is named Tie Jing; it can neutralize the toxicity of Cinnabar (*Zhu Sha*), Styptic Stone (*Ting Zhi*), and Mercury (*Shui Yin*). (The above text in black characters is recorded by famous physicians).
[Origin] (*Tu Jing Ben Cao* states): Old texts do not specify the producing provinces. Currently, it is found wherever there are smelting workshops in Jiangnan and Western Shu. It is purple dust-like matter flying out from iron forging furnaces, light and porous, which can be used to polish bronze vessels. (Ri Hua Zi states): Plowshare tip soaked in water is named Tie Jing. These two statements are contradictory. Upon careful examination, prescriptions use "Tie Jing Fen" (Iron Essence Powder), which aligns with the classic text. The plowshare tip soaked in water only serves to neutralize the toxicity of Cinnabar, Styptic Stone, and Mercury, and has no therapeutic value for diseases. As for the iron filings falling during forging, these are particles from the iron anvil, specifically debris from the anvil at smelting sites. Furthermore, rubbing bamboo or wood on knife or axe edges heated by fire produces a lacquer-like fluid known as "Dao Yan" (Blade Smoke), often used by people in Jiangdong to repel water, which is correct. If referring to Quenching Iron Water, it is the water in the iron trough used when quenching forged items. Needle Sand is simply the fine powder ground by needle-makers. Regarding their therapeutic effects, each should be used according to its specific suitability.
[Collection Time]: No fixed season.
[Usage]: Powdered.
[Texture]: Resembles dust, light and porous.
[Color]: Purple.
[Flavor]: Pungent.
[Nature]: Neutral, slightly warm.
[Qi and Flavor]: Strong odor, thin flavor; Yin within Yang.
[Odor]: Fishy.
[Main Indications]: Palpitations, wind epilepsy.
[Treatment]: (*Bie Lu* states): For postpartum vaginal/uterine prolapse, apply powder internally to restore position; for pain from snake bone splinters or toxin, place one bi of powder in a tube and blow it into the wound, then apply externally; for yin swelling; for pediatric rectal prolapse due to dysentery.
[Combination Therapy]: Mix with sheep fat until thick, wrap in cloth, heat, and apply as a hot compress for genital prolapse. ○ Mix with chicken liver, form pills the size of tung tree seeds, take five pills per dose with wine, to treat gu poison from food, abdominal hardness and pain, yellowish-green complexion, emaciation, and unpredictable pathological changes.
[Contraindications]: Excessive consumption damages the lungs.