生金辛平有毒，金箔无毒。
发明 金能制木，故可疗惊痫风热肝胆之病，然须为箔，庶无重坠伤中之患。紫雪
方用
赤金叶子煎水，取制肝降痰逆也。若成块锭金及首饰之类，非特无味且有油腻，良非所宜。
银箔功用与金不殊，但入气分，不入血分，稍为不同。《肘后方》治痈肿，五石汤用之。
苦平，微毒。
发明 贼风反折，以赤铜五斤烧红，内二斗酒中百遍，服五合，日三服，以效为度。
赤铜落乃打铜落下之屑，与自然铜同类，故亦能接骨。 赤醋沃七次，同五倍等则染须黑润。
藏器曰∶赤铜屑能焊人骨及六畜有损，细研酒灌，直入骨损处。六畜死后，取骨视之，犹有
焊痕可验。
酸苦平，小毒。
发明 铜青藉醋结成，能入肝胆二经。以醋蘸捻喉中则吐风痰，为散疗喉痹牙疳，醋调
揩腋下治狐臭，姜汁调点烂沿风眼，去疳杀虫，所治皆厥阴之病。
辛平，小毒。火 ，醋淬七次，置地七日，出火毒水飞用。铜非 不可入药。
新者，火毒燥烈，慎勿用之。
发明 自然铜出铜坑中，性禀坚刚，散火止痛，功专接骨，骨接之后，即宜理气活血，
庶无悍烈伤中走散真气之患。
辛平，小毒。
发明 古钱以生姜汁涂，刮青点目，去障消瘀散赤肿，一点即愈。但初点热泪蔑面
，然
终无损。惟作疮者，与肝肾虚而内障生花者，不可用也。妇人逆产，五淋，煮汁用之。便毒
初起与胡桃肉同嚼，食二三枚即消。便毒属肝，金伐木也。
生金（未经提炼的金）味辛，性平，有毒；金箔（极薄的金片）无毒。
【发明】金能制约肝木，因此可以治疗惊痫、风热以及肝胆系统的疾病，但必须制成金箔使用，否则厚重的金属会损伤中焦脾胃。紫雪方中使用赤金叶子煎水，是为了利用其抑制肝脏、降逆化痰的功效。如果是成块的锭金或首饰之类，不仅没有药效味道，而且带有油腻，非常不适宜入药。
银箔的功效与金相似，但银主要进入气分，不进入血分，这一点略有不同。《肘后方》治疗痈肿时，在五石汤中使用了银箔。
铜屑味苦，性平，微毒。
【发明】治疗贼风引起的身体反折痉挛，可将五斤赤铜烧红后，放入二斗酒中反复浸渍一百遍，每次服用五合，每日三次，以见效为度。赤铜落是敲打铜器时掉落的碎屑，与自然铜同类，因此也能接骨。将赤铜用醋浸泡七次，再与五倍子等药材配合，可以使头发染黑且润泽。唐代本草学家陈藏器说：赤铜屑能够焊接人的骨骼以及六畜受损的骨头，将其细细研磨后用酒灌服，药力直达骨损处。六畜死后，取出骨头查看，仍有焊接的痕迹可以验证。
铜青味酸、苦，性平，有小毒。
【发明】铜青依靠醋的作用凝结而成，能进入肝、胆两经。用醋蘸取铜青涂抹并刺激咽喉，可以催吐风痰；研成散剂治疗喉痹和牙疳；用醋调匀擦拭腋下可治疗狐臭；用姜汁调匀点涂治疗烂沿风眼（眼睑边缘溃烂的风邪眼病）；具有去除疳积、杀虫的功效，所治疗的病症都属于厥阴经的病证。
自然铜味辛，性平，有小毒。需经过火煅烧后，用醋淬炼七次，放置在地上七天以消除火毒，再用水飞法研磨后使用。铜本身并非不可入药。新制的自然铜火毒燥烈，务必谨慎使用，不要随意服用。
【发明】自然铜出产于铜矿坑中，性质坚硬刚强，擅长疏散火邪、止痛，其专长在于接骨。在骨折愈合之后，应当立即调理气机、活血通络，以免其自然铜悍烈之性损伤中焦正气，导致真气耗散。
古钱（古代钱币）味辛，性平，有小毒。
【发明】用生姜汁涂抹古钱，刮下铜锈点入眼中，可以去除翳障、消散瘀血、消退红肿，一点即愈。虽然初点时热泪满面，但最终不会造成损害。只有患有疮疡的人，以及肝肾虚弱导致内障视物昏花的人，不可使用。妇女难产、五种淋证，可煮古钱的汁液服用。便毒（腹股沟淋巴结炎等）初起时，与胡桃肉一同嚼食，吃两三枚即可消退。便毒归属于肝经病证，这是利用金（铜/钱）来克制木（肝）的原理。
Raw gold (Gold not refined) is acrid in flavor and neutral in nature, with toxicity; Gold foil (extremely thin sheets of gold) is non-toxic.
[Invention] Gold can subdue Liver Wood, thus it can treat conditions such as convulsions, epilepsy, wind-heat, and diseases of the Liver and Gallbladder channels. However, it must be processed into gold foil to avoid the risk of heavy, sinking properties damaging the Middle Jiao (Spleen and Stomach). In the Zixue Powder (Purple Snow Formula), red gold leaves are decocted in water to utilize its function of suppressing the Liver and descending rebellious Phlegm. Solid ingots or jewelry made of gold are unsuitable for medicinal use as they lack therapeutic flavor and contain grease.
Silver foil has functions similar to gold, but it enters the Qi Level rather than the Blood Level, which is a slight difference. The *Zhouhou Fang* (Handbook of Prescriptions for Emergencies) uses silver foil in the Wushi Tang (Five Minerals Decoction) to treat carbuncles and swellings.
Copper filings are bitter in flavor and neutral in nature, with mild toxicity.
[Invention] To treat "Zei Feng" (Robber Wind) causing body reversal and spasms, burn five jin (approx. 2.5 kg) of red copper until red-hot, then immerse it repeatedly one hundred times in two dou (approx. 20 liters) of wine. Take five he (approx. 100 ml) per dose, three times daily, until effective. "Chitongluo" refers to the debris falling from hammering copper, which is similar to Natural Pyrite (Ziran Tong) and can therefore also set bones. Soaking red copper in vinegar seven times, combined with other herbs like Chinese Gallnut (Wubeizi), can dye hair black and lustrous. Chen Cangqi stated: Red copper filings can weld human bones and livestock bones that are damaged. When finely ground and administered with wine, the medicine reaches the site of bone injury directly. After the death of livestock, examining the bones reveals welding marks as verification.
Copper acetate (Tongqing) is sour and bitter in flavor, neutral in nature, with slight toxicity.
[Invention] Copper acetate forms through the action of vinegar and enters the Liver and Gallbladder channels. Dipping it in vinegar and stimulating the throat induces vomiting of Wind-Phlegm. As a powder, it treats sore throat (Houbi) and gum rot (Yangan). Mixed with vinegar and applied to the armpits, it treats axillary odor (Huchou). Mixed with ginger juice and applied to eyes with ulcerated margins (Lanyan Feng), it removes childhood malnutrition parasites (Gan) and kills insects. All these treatments address diseases of the Jueyin channel.
Natural Pyrite (Ziran Tong) is acrid in flavor and neutral in nature, with slight toxicity. It should be calcined by fire, quenched in vinegar seven times, placed on the ground for seven days to eliminate fire toxicity, and then processed using the water-flying method. Copper itself is not unsuitable for medicinal use. New specimens possess strong fire toxicity and dryness; they must be used with caution and not employed casually.
[Invention] Natural Pyrite is mined from copper pits. Its nature is hard and rigid. It specializes in dispersing Fire and relieving pain, with the primary function of setting bones. After the bone is set, it is essential to regulate Qi and invigorate blood circulation to prevent the harsh and fierce nature of the mineral from damaging the Middle Jiao and scattering the True Qi.
Ancient coins (Guqian) are acrid in flavor and neutral in nature, with slight toxicity.
[Invention] Coating ancient coins with ginger juice and scraping the verdigris to apply to the eyes can remove visual obstructions (Yizhang), dissipate stasis, and reduce redness and swelling. Healing occurs immediately upon application. Although initial application may cause tears to flow profusely, it ultimately causes no harm. However, it is contraindicated for those suffering from sores/ulcers, and for individuals with internal cataracts due to Liver and Kidney deficiency. For women with difficult labor (Nichean) and the five types of strangury (Wulin), the decoction of ancient coins can be used. For early-stage buboes (Biandu, often referring to inguinal lymphadenitis), chewing them together with walnut meat (Hetao Rou) and consuming two or three pieces can resolve the condition. Biandu belongs to the Liver channel; this treatment utilizes Metal (copper/coin) to subdue Wood (Liver).