出川中。蔓生。叶似菝 而大。茎有刺者。其根实。其色黄白。三指许大。长硬而
雷公所以云竹木也。今人皆以土茯苓为萆 。讵知茎叶根苗皆不同。误矣。川萆
壮大突兀。坚而多节。（菝 根亦至坚。但多尖刺）切开白莹带粉。（其色红者菝 根
味苦平。（不若菝 根之苦涩）用者切宜辨之。
味苦气平。阴中之阳。入足厥阴少阴。薏苡仁为之使。补肝虚。主腰脊痛强。寒湿周痹。
冷
发
水
不
流入
煎竹
便频数。白浊如膏。有萆 厘清饮。正此意也。（濒湖）得骨碎补
仲石斛生地狗脊。治腰脊痛强。骨节风。加白术菖蒲茯苓。治周
泻牛膝黄柏甘草。可厘清除湿。护命方。（杨子建）凡小便频数。
可忍者。（与淋证涩而痛者不同）此证必先大腑不通。水液只就小肠
浑身热。心躁。其本因贪酒色。积有热毒腐物瘀血乘虚流入于小肠。
必平生过食辛热荤腻之物。又因色伤而然。宜用萆 一两。水浸少时。同盐半两炒。去盐为
末每服二三钱。水一盏。煎八分。和渣服。使水道转入大肠。仍以葱汤频洗谷
则溺数及痛自减也。
〔论〕萆 据本经别录甄权所主治。类不越外之寒湿。与内之虚冷为因。而所患多
下焦。第简方书。有属阴气不足。而亦用萆 以合所宜之药者。（如痿症之金刚丸。牛膝丸
。
补
为足
阳者藉
耳。补
者。则
阴血。而
则有阳虚而微
而并元阳亦虚
以化阴导阳之
金散。益心肾之
夫萆 固足三
经所谓一阴为
之用有地。故
其本固责于木
萆能厘清浊
茎痛可除。护
〔修治〕其根细长浅白而虚软者佳。酒浸一宿。焙干用。
产于四川。蔓生。叶子像菝葜（Bai Hua She）但更大。茎上有刺的，它的根是实心的，颜色黄白，直径约三指宽，质地坚硬。
雷公因此说它是竹木类。现在的人都把土茯苓当作萆薢（Bi Xie）。哪里知道它们的茎、叶、根、苗全都不同。这是错误的。四川产的萆薢长得高大突兀，坚硬且多节。（菝葜的根也非常坚硬，只是尖刺更多）切开后面色白净晶莹带粉质。（其中颜色红的则是菝葜根）味道苦平。（不像菝葜根那样苦涩）使用者务必仔细辨别。
味道苦，气平，属于阴中之阳。入足厥阴肝经和足少阴肾经。薏苡仁（Coix Seed）作为引经药。补肝虚，主治腰脊疼痛僵硬，寒湿引起的周身痹痛。
小便频数，尿液浑浊如膏脂。有萆薢分清饮（Bixie Fenqing Yin），正是这个意思。（李时珍《濒湖脉学》语）配合骨碎补（Drynariae Rhizoma）、石斛（Dendrobii Caulis）、生地（Rehmanniae Radix）、狗脊（Cibotii Rhizoma），治疗腰脊疼痛僵硬，骨节风。加入白术（Atractylodis Macrocephalae Rhizoma）、石菖蒲（Acori Tatarinowii Rhizoma）、茯苓（Poria），治疗周身痹痛。加入牛膝（Achyranthis Bidentatae Radix）、黄柏（Phellodendri Cortex）、甘草（Glycyrrhizae Radix et Rhizoma），可以厘清浊湿。护命方。（杨子建著）凡是小便频数，是可以忍受的。（这与淋证中涩而疼痛的情况不同）这种病症必须先是大便不通，水液只流向小肠。
浑身发热，心中烦躁。其根本原因是贪恋酒色，积聚了热毒、腐物、瘀血，乘虚流入小肠。
必定是平生过食辛辣温热、荤腥油腻之物，又因房事损伤所致。宜用萆薢一两，用水浸泡片刻，同盐半两一起炒，去掉盐后研为细末。每次服用二三钱，用水一盏，煎至八分，连同药渣一起服用，使水道转入大肠。仍用葱汤频繁清洗前阴部位，那么溺次增多及疼痛自然减轻。
〔论〕萆薢据《本经》、《别录》、甄权所主治的内容来看，类别不外乎外感的寒湿与内生的虚冷为病因，而患病部位多在下焦。简略查阅方书，有属于阴气不足，也使用萆薢配合适宜药物的情况。（如痿症的金刚丸、牛膝丸等）补益阳气者借助它，补益阴血者也有它的应用之地。所以有阳虚而微弱的，以及并元阳亦虚的，利用它来化阴导阳的功效。金散（Jin San），益心肾之... 夫萆薢固足三... 经所谓一阴为... 之用有地。故其本固责于木... 萆薢能厘清浊... 茎痛可除，护...
Produced in Sichuan. It grows as a vine. The leaves resemble those of Smilax glabra (Bai Hua She) but are larger. Those with thorns on the stems have solid roots, yellowish-white in color, about three fingers wide in diameter, and hard in texture.
Lei Gong therefore classified it among bamboo and wood types. Nowadays, people generally mistake Polygonatum odoratum (Tu Fu Ling) for Dioscorea hypoglauca (Bi Xie). How could they know that the stems, leaves, roots, and seedlings are all different? This is an error. Dioscorea hypoglauca from Sichuan grows large and prominent, hard and knotty. (The root of Smilax glabra is also very hard, but has more sharp thorns.) When cut open, the interior is white, bright, and starchy. (Those with a red color are actually Smilax glabra roots) The taste is bitter and neutral. (Unlike the bitter-astringent taste of Smilax glabra roots). Users must be careful to distinguish them.
Taste: bitter; Nature: neutral; Attribute: Yang within Yin. Enters the Foot Jueyin Liver Meridian and Foot Shaoyin Kidney Meridian. Coix Seed (Yiyiren) acts as a guiding herb. Tonifies Liver deficiency; primarily treats pain and stiffness of the waist and spine, and generalized bi-syndrome caused by cold-dampness.
Frequent urination, urine turbid like paste. There is a formula called Bixie Fenqing Yin (Dioscorea Hypoglauca Decoction for Separating the Clear), which embodies this principle. (Li Shizhen, Bencao Gangmu) Combined with Drynariae Rhizoma (Gusuibu), Dendrobii Caulis (Shihu), Rehmanniae Radix (Shengdi), and Cibotii Rhizoma (Gouji), it treats pain and stiffness of the waist and spine, and wind-bi in bone joints. Added with Atractylodis Macrocephalae Rhizoma (Baizhu), Acori Tatarinowii Rhizoma (Changpu), and Poria (Fuling), it treats generalized bi-syndrome. Added with Achyranthis Bidentatae Radix (Niuxi), Phellodendri Cortex (Huangbai), and Glycyrrhizae Radix et Rhizoma (Gancao), it can separate clear from turbid and eliminate dampness. Huming Fang (Life-Protecting Formula). (Yang Zijian) Whenever there is frequent urination, it is bearable. (This differs from strangury syndrome where urination is difficult and painful). This condition must first involve constipation (lack of bowel movement), causing fluids to flow only into the Small Intestine.
Generalized heat, mental restlessness. The root cause lies in indulgence in alcohol and sexual activity, accumulating heat-toxins, putrefied matter, and blood stasis, which enter the Small Intestine through deficiency.
It is invariably due to a lifetime of overeating spicy, hot, meaty, and greasy foods, combined with injury from sexual excess. One should use one liang of Dioscorea hypoglauca, soak it in water for a short time, stir-fry it with half a liang of salt, remove the salt, and grind into powder. Take two or three qian per dose, decoct with one cup of water until reduced to eight-tenths, and take it together with the dregs. This directs the water pathway into the Large Intestine. Still, frequently wash the external genitalia with scallion soup, so that increased frequency and pain of urination will naturally subside.
[Discussion] According to the treatments recorded in *Shennong Bencao Jing*, *Bencao Bie Lu*, and Zhen Quan, the indications for Dioscorea hypoglauca mainly do not exceed external cold-dampness and internal deficiency-cold as etiologies, with diseases mostly located in the Lower Jiao. Briefly consulting medical texts, there are cases belonging to insufficiency of Yin Qi, where Dioscorea hypoglauca is also used in combination with suitable herbs. (Such as Jingang Wan and Niuxi Wan for flaccidity syndrome). For tonifying Yang, it finds its place; for tonifying Yin and Blood, it also has its utility. Thus, for those with slight Yang deficiency, and even those with simultaneous Yuan Yang deficiency, it is utilized for its function of transforming Yin and guiding Yang. Jin San (Metal Powder) benefits the Heart and Kidney... Indeed, Dioscorea hypoglauca firmly supports the Three Foot... meridians, as mentioned in the classics regarding "One Yin"... It has its application. Therefore, securing the root involves addressing Wood... Dioscorea hypoglauca can separate clear from turbid... Pain in the stem/shaft can be removed, protecting...
[Processing] Roots that are slender, pale white, and soft/pithy are superior. Soak in wine overnight, bake dry, and use.