（本经中品）
毒家、痘疹家多用此，宁不寒心。暖然齐春仁之洁，鼎新革故之象乎。
【气味】辛温，无毒。
【主治】主女人漏下亦白，血闭，阴肿，寒热，风头，侵目泪出，长肌肤，润泽颜色，
可作
【核】曰∶所在有之，吴地尤多。近钱唐笕桥亦种莳矣。春生苗，叶叶对生，花白微黄。
入伏后结子，立秋后苗枯。根长尺余，粗细不等，黄泽者为佳。修事，勿使四条一处生者，
名丧公藤。又勿用马兰根。采得刮去皮，细锉，以黄精片等分，同蒸一伏时，晒干，去黄精
用。近时用锻石蒸煮，及拌锻石暴晒，为不易蛀，并欲色白，不特失其本性，而燥烈之毒最
深，用之无忽也。当归为之使。恶旋复花，制雄黄、硫黄。
【 】曰∶楚辞以芳草比君子，而言 为多。 ，白芷也。一物多名。 也，芷也，芳
也，药也， 也，苻蓠也，泽芬也。其取象于草木之芳泽者，无所不备矣。王逸云∶行清洁
者佩芳，白 之属是也。具春生发陈之气，洁齐生物者也。合从青阳高明之上，一阴隐僻之
下，对待污浊者，齐之以洁，如女子漏下亦白，血闭阴肿寒热。此一阴之下，血浊及气浊也。
如
泽颜色，即洁颜色浊，以血洁则血华于色也。可作面脂，此不独饵可激浊，即肤受亦可表洁
矣。
（《神农本草经》列为中品）
毒疮患者、痘疹患者多使用此药，难道不令人感到寒心吗？它温暖而整齐，如同春天种子般洁净，具有除旧布新之象。
【气味】辛，温，无毒。
【主治】主要治疗妇女白带淋漓不断，经血闭阻，阴部肿胀，寒热往来，头风病，侵入眼部导致流泪，促进肌肤生长，润泽肤色。
【考证】曰：各地都有出产，吴地尤其多。近来钱塘笕桥也开始种植了。春季生苗，叶子两两对生，花朵白色微黄。入伏后结籽，立秋后茎叶枯萎。根长一尺多，粗细不等，色泽黄润者为佳。炮制时，不要使用四条根聚在一起生长的，那叫“丧公藤”。另外不要用马兰的根。采得后刮去外皮，切成细丝，与黄精片等量混合，共同蒸一个“伏时”（约12小时），晒干后去掉黄精使用。近代常用煅石蒸煮，或拌入煅石暴晒，为了防蛀并追求颜色洁白，这不仅失去了药物的本性，而且其燥烈之毒最深，使用时不可轻视。当归作为它的引经药。畏恶旋覆花，可用雄黄、硫黄来制约它。
【集解】曰：《楚辞》用芳草比喻君子，其中提到白芷的次数很多。白芷，就是白芷。一种药材有多个名字。蕲也，芷也，芳也，药也，蕲也，苻蓠也，泽芬也。它在草木芳香滋润方面的取象，无所不备。王逸说：行为清洁的人佩戴芳香之物，白芷之类就是这样的。它具有春季生发、陈旧的推陈出新的气机，是洁净齐整以化生万物的药物。配合从青阳高明的上方，到一阴隐僻的下方，对待污浊的事物，用洁净来整治它们，就像女子白带淋漓、经血闭阻、阴部肿胀、寒热往来一样。这是在一阴之下，血浊和气浊的表现。如润泽肤色，就是使污浊的肤色变得洁净，血液洁净则面色荣华。可以制作面脂，这不仅仅内服可以激发清除污浊，即使皮肤受到侵袭也可以表露出洁净之气。
(Shennong Bencao Jing [Classic of Materia Medica], Middle Grade)
Practitioners treating toxic sores and those managing smallpox/rash often use this herb; is it not chilling to the heart? It is warm and orderly, as clean as spring seeds, embodying the image of renewing the old with the new.
[Flavor and Properties] Acrid, Warm, Non-toxic.
[Indications] Primarily treats leukorrhea (white vaginal discharge) in women, amenorrhea (blood obstruction), genital swelling, alternating chills and fever, head wind disorders, tearing caused by pathogenic invasion into the eyes, promotes skin growth, and moistens and brightens complexion.
[Verification] Says: It is available everywhere, especially abundant in the Wu region. Recently, Jianqiao in Qiantang has also begun cultivating it. Seedlings emerge in spring, leaves grow opposite each other, flowers are white with a slight yellow tint. Seeds form after the beginning of Sanfu (the hottest period of summer), and the stalks wither after Start of Autumn. The root is over a chi long, varying in thickness; those with a yellowish luster are superior. In processing, do not use roots where four strands grow together at one place, known as "Sanggong Teng" (Funeral Official Vine). Also, do not use the root of Kalimeris indica (Malan). After harvesting, scrape off the bark, cut into fine shreds, mix equally with slices of Polygonatum sibiricum (Huangjing), steam together for one "Fu Shi" (a traditional time unit approx. 12 hours), dry in the sun, and remove the Huangjing before use. In recent times, calcined alum (Duan Shi) is used for steaming or mixed with calcined alum for sun-drying to prevent insect damage and achieve whiteness. This not only loses its natural nature but also possesses the deepest drying and acrid toxicity; thus, caution must be exercised in its use. Angelica sinensis (Danggui) serves as its guiding herb. It is incompatible with Inula japonica (Xuanfuhua); its toxicity can be moderated by Realgar (Xionghuang) and Sulfur (Liuhuang).
[Collected Explanations] Says: The Chu Ci uses fragrant herbs to metaphorically represent gentlemen, mentioning Bai Zhi frequently. Bai Zhi is indeed Bai Zhi. One substance has multiple names: Qi, Zhi, Fang, Yao, Qi, Fulí, Zefen. Its symbolism regarding the fragrance and moisture of plants is comprehensive. Wang Yi stated: "Those who act with cleanliness wear fragrances," and Bai Zhi belongs to this category. It possesses the qi of spring emergence and renewal, being clean and orderly in generating life. Combining the high brightness of Qingyang (Spring Yang) above with the hidden yin below, it addresses turbidity with cleanliness, just as it treats leukorrhea, amenorrhea, genital swelling, and alternating chills and fever. These conditions in the lower yin reflect turbidity in blood and qi. To moisten and brighten the complexion is to cleanse the turbid complexion; when blood is clean, the complexion becomes radiant. It can be made into facial cream. This indicates that not only internal administration can stimulate the clearing of turbidity, but even external application on the skin can manifest cleanliness.