（一名龙脑薄荷。）
【茎叶】【气味】
辛微温无毒。
【主治】
水苏之功。专于理血下气。清肺辟恶消谷。故太平和济局方。治吐血衄血唾血咳血
下血血淋口臭口苦口甜喉腥邪热诸病。有龙脑薄荷丸。方药多不录。用治血病果有殊效。
（是虎掌新根。大干半夏一二倍。四畔未有子牙。其宿根即虎掌也。）
【气味】
辛苦温有毒。
【主治】
毒肿结热。
（一名急性子。）
【子】【气味】
微苦温有小毒。
【主治】
产难积块噎膈。下骨哽。透骨通窍。凤仙子其性急速。故能透骨软坚。庖人烹鱼肉
。硬者投数粒即易软烂。是其验也。缘其透骨。最能损齿。与玉簪根同。凡服者不可着齿。
多用亦戟人咽。
【气味】
甘温无毒。
【主治】
折伤。消结肿恶疮。生肌止腰痛。除粉刺 。妇人乳痈。肛门肿痛。醋磨消肿毒
。治疳积痞块。利大肠泻痢痔瘤瘰 。
【气味】
辛温无毒。
【主治】
烧之辟天行时气宅舍怪异。小儿带之。辟邪恶气。疗折伤金疮。止血定痛。消肿生
肌。
（释名韶脑。）
【气味】
辛热无毒。
【主治】
通关窍。利滞气。治中恶邪气。霍乱心腹痛。寒湿香港脚。疥癣风瘙龋齿。杀虫辟毒
。着鞋中去香港脚。盖樟脑纯阳。与焰硝同性。水中生火。其焰益炽。今丹炉及烟火家多用之
。辛热香窜。禀龙火之气。去湿杀虫。此其所长。故烧烟熏衣筐席箪。能辟壁虱虫蛀。
（水苏，又名龙脑薄荷。）
【茎叶】【气味】
味辛，性微温，无毒。
【主治】
水苏的功效，专门在于调理血液、降逆下气，清泄肺热、驱除秽恶之气、助消化。因此，太平惠民和剂局方中，用其治疗吐血、鼻出血、唾血、咳血、便血、血淋、口臭、口苦、口甜、咽喉腥臭以及邪热等各种病症，有龙脑薄荷丸这一方剂。因方药组成繁多，此处不再详细记录。用它来治疗血证果然有显著疗效。
（这是虎掌的新根，体积比大干半夏大一两倍，四周没有子芽。它的老根就是虎掌。）
【气味】
味辛苦，性温，有毒。
【主治】
毒肿结聚发热。
（急性子，又名凤仙子。）
【子】【气味】
味微苦，性温，有小毒。
【主治】
难产、积聚肿块、噎膈（吞咽困难）、骨鲠在喉。具有透骨通窍的功效。凤仙子的药性急骤迅速，所以能穿透骨骼、软化坚硬之物。厨师烹煮鱼肉时，放入几粒，硬肉很快就能变得软烂，这就是它的验证。因为它能透骨，所以最易损伤牙齿，这与玉簪根相同。凡是服用者，不可让药液接触牙齿。用量过多也会刺激咽喉。
【气味】
味甘，性温，无毒。
【主治】
跌打损伤。消除结肿、恶疮，生肌，止腰痛，去除粉刺。治疗妇人乳痈（乳腺炎），肛门肿痛。用醋磨汁外敷可消肿毒。治疗疳积、痞块，通利大肠，治疗泻痢、痔瘤、瘰疬（淋巴结核）。
【气味】
味辛，性温，无毒。
【主治】
焚烧此物可辟除流行性时气和宅舍中的怪异之气。小儿佩戴它，可辟除邪恶之气。治疗跌打损伤和金创（刀箭创伤），止血定痛，消肿生肌。
（樟脑，释名韶脑。）
【气味】
味辛，性热，无毒。
【主治】
开通孔窍，疏通滞气。治疗中恶邪气、霍乱引起的心腹疼痛、寒湿脚气、疥癣、风疹瘙痒、龋齿。杀虫解毒。将樟脑放在鞋中，可治疗脚气。因为樟脑属纯阳之品，与焰硝性质相似，遇水能生火，火势更加猛烈。现在炼丹炉及烟火匠人多使用它。樟脑辛热香窜，禀受龙火之气，能祛湿杀虫，这是它的长处。所以燃烧樟脑的烟雾熏蒸衣物、竹筐、席子、竹箱，能辟除壁虱和虫蛀。
(Shuisu, also known as Longnao Bohe.)
[Stems and Leaves] [Flavor and Properties]
Pungent, slightly warm, non-toxic.
[Indications]
The efficacy of Shuisu (Perilla frutescens) specifically lies in regulating blood, directing rebellious Qi downward, clearing the Lungs, dispelling foulness, and promoting digestion. Therefore, in the *Taiping Huiji Jufang* (Formulas of the Taiping People's Relief Bureau), it is used to treat various conditions such as hematemesis (vomiting blood), epistaxis (nosebleed), hemoptysis (spitting blood), coughing up blood, lower GI bleeding, hematuria with blood, bad breath, bitter taste in the mouth, sweet taste in the mouth, fishy odor in the throat, and pathogenic heat. There is a formula called Longnao Bohe Wan (Dragon Brain Mint Pill). Due to the complexity of its ingredients, the full prescription is not recorded here. It indeed shows remarkable effects in treating blood disorders.
(This is the new root of *Banxia*, which is two to three times larger than dried Banxia. It has no tubers on its periphery. Its old root is the *Banxia* plant itself.)
[Flavor and Properties]
Pungent and bitter, warm, toxic.
[Indications]
Toxic swelling with accumulated heat.
(Xingjizi, also known as Fengxianzi.)
[Seeds] [Flavor and Properties]
Slightly bitter, warm, slightly toxic.
[Indications]
Dystocia (difficult labor), accumulations and masses, dysphagia (difficulty swallowing), and foreign bodies stuck in the throat. It has the effect of penetrating bones and opening orifices. Fengxianzi (Impatiens balsamina) has a rapid and urgent nature, thus it can penetrate bone and soften hardness. When cooks prepare fish or meat, adding a few seeds makes tough meat soft and tender quickly; this is evidence of its efficacy. Because it penetrates bone, it is most likely to damage teeth, similar to Yuzan Gen (Tricyrtis hirta). Those who take it internally must avoid contact with the teeth. Excessive use may also irritate the throat.
[Flavor and Properties]
Bitter, neutral-warm, toxic.
[Indications]
Scabies, tinea, and parasitic infections.
[Flavor and Properties]
Sweet, warm, non-toxic.
[Indications]
Traumatic injuries. Reduces nodules and swelling, treats malignant sores, promotes tissue regeneration, relieves lower back pain, and removes acne. Treats breast abscesses in women, anal swelling and pain. Applied externally with vinegar paste to reduce swelling and toxicity. Treats infantile malnutrition (Gan syndrome), abdominal masses, unblocks the large intestine, and treats diarrhea, dysentery, hemorrhoids, tumors, and scrofula (tuberculous lymphadenitis).
[Flavor and Properties]
Pungent, warm, non-toxic.
[Indications]
Burning it repels epidemic pathogens and strange energies in dwellings. Wearing it protects children from evil qi. Treats traumatic injuries and metal wounds, stops bleeding, alleviates pain, reduces swelling, and promotes tissue regeneration.
(Zhangnao, explained as Shaonao.)
[Flavor and Properties]
Pungent, hot, non-toxic.
[Indications]
Opens orifices, promotes the flow of stagnant Qi. Treats sudden invasion by evil qi, cholera-like symptoms with heart and abdominal pain, cold-dampness affecting the legs (Hong Kong foot/jiaoqi), scabies, wind-itch, and dental caries. Kills parasites and detoxifies. Placing it in shoes treats jiaoqi. Zhangnao is purely Yang in nature, sharing properties with saltpeter (Yanxiao); it generates fire in water, intensifying the flame. It is widely used by alchemists and pyrotechnicians today. Pungent, hot, aromatic, and penetrating, it embodies the energy of Dragon Fire, dispelling dampness and killing parasites—this is its strength. Thus, smoking clothes, baskets, mats, and boxes with burning Zhangnao repels bedbugs and insect infestations.