\r大青\pd172.bmp\r
味苦，大寒，无毒。主疗时气头痛，大热口疮。三、四月采茎，阴干。
陶隐居云∶疗伤寒方多用此，《本经》又无。今出东境及近道。长尺许，紫茎。除时行
热毒
为良。唐本注云∶大青用叶兼茎，不独用茎也。臣禹锡等谨按药性论云∶大青，臣，味甘
。
能去大热，治温疫，寒热。日华子云∶治热毒风，心烦闷渴疾，口干，小儿身热疾，风疹，
天行热疾及金石药毒，兼涂 肿毒。
图经曰∶大青，旧不载所出州土，今江东州郡及荆南，眉、蜀、濠、淄诸州皆有之。春
生青
紫
茎似石竹，苗、叶、花红紫色似马蓼，亦似芫花。根黄。三月、四月采茎、叶，阴干用。古
方∶治伤寒，黄汗，黄胆等有大青汤，又治伤寒头身强，腰脊痛。葛根汤亦用大青。大抵时
疾药多用之。
\r女萎\pd173.bmp\r
味辛，温。主风寒洒洒，霍乱泄痢，肠鸣游气上下无常，惊痫寒热百病，出汗。李氏
本草云∶止下，消食。
唐本注云∶其叶似白蔹，蔓生，花白，子细。荆、襄之间名为女萎，亦名蔓楚。止痢有
效。
图经文具萎蕤条下。
雷公云∶凡采得，阴干，去头并白蕊，于槐砧上锉，拌豆淋酒蒸。从巳至未出，晒令干
用。
Da Qing (Indigo Naturalis)
Bitter, extremely cold, non-toxic. Primarily treats headache caused by epidemic febrile diseases and mouth ulcers resulting from high fever. Harvest the stems in the third and fourth months, and dry them in the shade.
Tao Hongjing stated: This herb is frequently used in formulas for treating Shanghan (Cold Damage), although it is not recorded in the *Shennong Bencao Jing* (Divine Farmer's Materia Medica). It is currently produced in eastern borders and nearby regions. The stems are about one chi long and purple. It is excellent for eliminating heat toxins from epidemic diseases. The *Tang Bencao* commentary notes: Da Qing uses both leaves and stems, not just stems alone. Chen Yuxi et al., according to the *Yaoxing Lun* (Treatise on Drug Properties), state: Da Qing, as a minister drug, has a sweet taste. It can eliminate severe heat, treat Wenyi (warm epidemic diseases), and alternating chills and fever. Ri Huazi stated: It treats wind-heat toxin, mental restlessness with thirst, dry mouth, pediatric fever, wind-rash, Tianxing Reji (epidemic febrile diseases), and toxicity from metallic/mineral drugs; it can also be applied externally to sores and swellings.
The *Tujing* (Illustrated Classic) states: Da Qing was not previously recorded regarding its place of origin. Currently, it grows in various commanderies in Jiangdong, Jingnan, and prefectures such as Meizhou, Shuzhou, Haozhou, and Zizhou. In spring, green-purple stems emerge, resembling Dianthus; the seedlings, leaves, and flowers are red-purple, resembling Polygonum perfoliatum (Ma Liao), or also resembling Genkwa Flos (Yuan Hua). The roots are yellow. Harvest stems and leaves in the third and fourth months, and use after drying in the shade. Ancient formulas: For treating Shanghan, Huanghan (yellow sweat), and Huangdan (jaundice), there is Da Qing Tang (Indigo Decoction); it also treats head and body stiffness, and lower back and spine pain caused by Shanghan. Gegen Tang (Kudzu Decoction) also uses Da Qing. Generally, medicines for epidemic diseases often include it.
Nüwei (Caulis Cissampi)
Pungent, warm. Primarily treats aversion to cold with shivering due to wind-cold, cholera-like diarrhea and dysentery, intestinal murmurs with wandering qi moving up and down unpredictably, epilepsy and convulsions with alternating chills and fever from various ailments, and sweating. Li Shi's Materia Medica states: It stops diarrhea and promotes digestion.
The *Tang Bencao* commentary notes: Its leaves resemble Ampelopsis japonica (Bai Lian), it grows as a vine, has white flowers, and small fruits. Between Jingzhou and Xiangyang, it is called Nüwei, also known as Man Chu. It is effective for stopping dysentery.
The content of the *Tujing* is detailed under the entry for Weirui (Polygonatum odoratum).
Lei Gong stated: After harvesting, dry in the shade, remove the head and white stamens, chop on a locust wood cutting board, mix with Doulin Jiu (soybean-leavened wine), and steam. Take out from Si hour to Wei hour, and sun-dry for use.