即鳢肠。一名金陵草。
甘、酸、凉。入足少阴经血分。凉血滋阴。疗脏毒，退肾热。灸疮发洪血不止者，敷之
立已
。（血凉，诸病皆除。）得车前，治溺血。得川连，治热痢。佐绿豆，治热胀。入热酒，治痔
。（用汁冲。）
利水，童便煮。恐妨胃，姜汁蒸。研末服，治脏毒。胃弱便溏，肾气虚寒者，禁用。
苦，凉。入足少阴、手阳明、少阴、厥阴经气分。泻六经之血热，散诸疮之肿毒，利水
通经
，杀虫排脓。配木通，泻心火。佐芝麻末，治瘰 。同鼠粘，疗痘毒。合大黄，治马刀。
痈疽溃后，热由于虚，二者禁用。
名连轺
苦，寒。下热气。专治伤寒瘀热发黄者，导湿热从小便而出。
苦、甘、寒。入足厥阴经。降火解毒，能使败血分归经络。愈疔肿金疮，追鳖瘕胀痛，
解百
药诸毒，止瘟疫热狂，消赤眼暴发，退小儿壮热。得雄鼠粪，治阴阳易。配川柏末，掺耳疳
。佐锻石丸，治痞塞。（面糊调。）加麝香、雄黄，点蜘蛛伤。捣汁，涂唇疮。
虚作泻者禁用。
怪症∶蜘蛛咬头上，一宿，咬处有二道赤色，细如箸，绕项上，从胸前下至心，经两宿，
头
面肿疼，大如数升碗，肚渐肿，几至不救。取蓝汁一碗，以蜘蛛投之，入汁而死。又取蓝汁
加麝香、雄黄，更以一蛛投入，随化为水，遂即点于咬处，两日悉平，作小疮而愈。
甘、酸、凉。入足少阴经血分。凉血滋阴。疗脏毒，退肾热。灸疮发洪血不止者，敷之立已。（血凉，诸病皆除。）得车前，治溺血。得川连，治热痢。佐绿豆，治热胀。入热酒，治痔。（用汁冲。）
味甘、酸，性凉。归入足少阴经的血分。具有凉血滋阴的功效。治疗脏毒（指肠道湿热蕴结所致的便血或痔疮出血等症），清除肾热。对于灸疮（艾灸后形成的疮口）出血不止的情况，外敷此药可立即止血。（血液清凉后，各种病症皆可消除。）与车前草配伍，治疗尿血。与川黄连配伍，治疗热性痢疾。辅助绿豆使用，治疗因热引起的腹部胀满。加入热酒中，治疗痔疮。（将药汁冲服。）
利水，童便煮。恐妨胃，姜汁蒸。研末服，治脏毒。胃弱便溏，肾气虚寒者，禁用。
为了增强利水功效，可用童子小便煎煮。担心损伤胃气，可用姜汁蒸制。研磨成粉末服用，治疗脏毒。脾胃虚弱导致大便稀溏，以及肾气虚寒的患者，禁止使用。
苦，凉。入足少阴、手阳明、少阴、厥阴经气分。泻六经之血热，散诸疮之肿毒，利水通经，杀虫排脓。配木通，泻心火。佐芝麻末，治瘰疬。同鼠粘，疗痘毒。合大黄，治马刀痈疽溃后，热由于虚，二者禁用。
味苦，性凉。归入足少阴、手阳明、手少阴、足厥阴经的气分。能清泻六经的血热，消散各种疮疡的肿毒，利水通经，杀虫排脓。与木通配伍，清泻心火。辅助黑芝麻粉使用，治疗瘰疬（颈部淋巴结结核）。与牛蒡子（鼠粘子）同用，治疗痘毒。与大黄合用，治疗马刀侠瘿（一种类似淋巴结核的病症）。痈疽溃烂后，若热象是由于正气虚弱所致，这两种情况（指上述苦凉之品或特定配伍）均禁止使用。
苦，寒。下热气。专治伤寒瘀热发黄者，导湿热从小便而出。
味苦，性寒。能降泄热气。专门治疗伤寒病中因瘀热导致的黄疸，引导湿热通过小便排出体外。
苦、甘、寒。入足厥阴经。降火解毒，能使败血分归经络。愈疔肿金疮，追鳖瘕胀痛，解百药诸毒，止瘟疫热狂，消赤眼暴发，退小儿壮热。得雄鼠粪，治阴阳易。配川柏末，掺耳疳。佐锻石丸，治痞塞。（面糊调。）加麝香、雄黄，点蜘蛛伤。捣汁，涂唇疮。虚作泻者禁用。
味苦、甘，性寒。归入足厥阴经。能降火解毒，能使离经之败血重新回归经络。治愈疔疮肿痛和金创（金属利器造成的创伤），消除鳖瘕（腹内结块）引起的胀痛，解除各种药物中毒，制止瘟疫引起的高热狂躁，消除突发的红眼病，退去小儿的高热。配合雄鼠粪，治疗阴阳易（伤寒病愈后因房事复发的病症）。配伍川柏（黄柏）粉末，撒敷治疗耳疳（耳部化脓性疾病）。辅助锻石丸使用，治疗痞塞不通。（用面糊调和。）加入麝香、雄黄，点涂治疗蜘蛛咬伤。捣碎取汁，涂抹治疗唇疮。气血虚弱导致腹泻的患者禁止使用。
怪症∶蜘蛛咬头上，一宿，咬处有二道赤色，细如箸，绕项上，从胸前下至心，经两宿，头面肿疼，大如数升碗，肚渐肿，几至不救。取蓝汁一碗，以蜘蛛投之，入汁而死。又取蓝汁加麝香、雄黄，更以一蛛投入，随化为水，遂即点于咬处，两日悉平，作小疮而愈。
怪异病症：被蜘蛛咬伤头部，过了一夜，咬伤处出现两条红线，细如筷子，环绕颈部向上，从胸前向下延伸至心脏部位。经过两个夜晚，头面部肿胀疼痛，肿大如同几个升容量的碗，腹部逐渐肿胀，几乎无法救治。取一碗蓝叶汁，将活蜘蛛投入其中，蜘蛛进入汁液后死亡。再取蓝叶汁，加入麝香、雄黄，再投入一只蜘蛛，蜘蛛随即化为水状。立刻将此药液点涂在咬伤处，两天后症状完全平息，形成小疮口后痊愈。
Lichang (Ecliptae Herba). Also known as Jinling Cao.
Sweet, sour, and cool. Enters the blood level of the Foot-Shaoyin meridian. Cools the blood and nourishes yin. Treats zangdu (visceral toxin, often referring to bloody stool or hemorrhoids due to damp-heat in the intestines), clears kidney heat. For moxibustion sores with excessive bleeding that does not stop, applying it externally stops the bleeding immediately. (When the blood is cooled, various diseases are eliminated.) Combined with Cheqiancao (Plantaginis Semen/Herba), treats hematuria. Combined with Chuanlian (Coptidis Rhizoma), treats heat dysentery. Assisted by Lüdou (Vigna radiata), treats heat-induced abdominal distension. Added to hot wine, treats hemorrhoids. (Use the juice mixed with wine.)
Promotes diuresis when decocted with tongbian (urine of a prepubescent boy). To prevent stomach damage, steam it with jiangzhi (ginger juice). Taken as powder, treats zangdu. Contraindicated for those with weak spleen/stomach and loose stools, or kidney qi deficiency and cold.
Bitter, cool. Enters the qi level of the Foot-Shaoyin, Hand-Yangming, Hand-Shaoyin, and Foot-Jueyin meridians. Drains blood heat from the six meridians, dissipates swelling and toxicity of various sores, promotes diuresis and unblocks menstruation, kills parasites, and discharges pus. Paired with Mutong (Akebiae Caulis), drains heart fire. Assisted by Zhima (Sesamum indicum) powder, treats luoli (scrofula). Used with Shuniu (Arctii Fructus), treats smallpox toxin. Combined with Dahuang (Rhei Radix et Rhizoma), treats madao (scrofula/lymphadenitis). After ulceration of carbuncles and sores, if heat is due to deficiency, both [bitter-cool agents] are contraindicated.
Name: Lianyao.
Bitter, cold. Descends heat qi. Specifically treats jaundice caused by stagnant heat in shanghan (cold damage diseases), guiding damp-heat out through urination.
Bitter, sweet, cold. Enters the Foot-Jueyin meridian. Descends fire and resolves toxicity, enabling broken blood to return to the meridians. Heals dingzhong (carbuncles) and jinchuang (metal wounds), eliminates pain and distension from bieja (abdominal masses), resolves poisoning from various drugs, stops epidemic fever and mania, clears sudden red eye, reduces high fever in children. With xiongshufen (male rat feces), treats yinyangyi (relapse after sexual intercourse following recovery from cold damage). Paired with Chuanbai (Phellodendri Cortex) powder, applied to ergan (auricular furuncle). Assisted by Duanshi Wan, treats pi-se (obstruction/stagnation). (Mixed with paste.) Added with Shexiang (Moschus) and Xionghuang (Realgar), applied to spider bites. Crushed for juice, applied to lip sores. Contraindicated for those with deficiency-type diarrhea.
Strange case: Spider bite on the head. After one night, two red lines appear at the bite site, thin as chopsticks, winding up the neck, descending from the chest to the heart. After two nights, the head and face swell and hurt, swollen like bowls holding several sheng (ancient unit of volume), abdomen gradually swells, nearly fatal. Take one bowl of Lan Ye (Isatidis Folium) juice, throw the spider into it; it dies upon entering the juice. Take another bowl of Lan Ye juice, add Shexiang and Xionghuang, throw in another spider; it dissolves into water. Immediately apply this mixture to the bite site. Within two days, all symptoms subside, leaving a small sore that heals.