通，祛湿热，补脾胃
甘淡而平。阳明（胃、大肠）主药，健脾胃，祛风湿，脾胃健则营卫从，风湿除则筋骨
利。利小便，止泻泄。
治筋骨拘挛，杨梅疮毒（杨梅疮，古方不载。明·正德间起于岭表，其证多属阳明，厥
阴而兼及他经。盖相火寄于厥阴、肌肉属于阳明故也。医用轻粉劫剂，其性燥烈。入阳明劫
去痰涎，从口齿出，疮即干愈。然毒瓦斯窜入经络、筋骨，血液枯槁，筋失所养，变为拘挛、
痈、漏，竟致废痼。土茯苓能制轻粉之毒，去阳明湿热。用一两为君，苡仁、金银花、防风
、木通、木瓜、白藓皮各五分，皂角子四分，气虚加人参七分，血虚加当归七分，名搜风解
毒汤），瘰 疮肿（湿郁而为热，营卫不和，则生疮肿。经曰∶湿气害人，皮肉筋胀是也。
土茯苓淡能渗，甘能补，患脓疥者，煎汤代茶，甚妙）。
大如鸭子，连缀而生，俗名冷饭团。有赤、白二种，白者良。可食良，亦可生啖。忌茶
。
泻火，散结
苦能泄，辛能散，甘能缓，寒能除热。杀火毒，散结气，生肌止痛。
治痈疽疮肿，面上 疮，金疮扑损（箭镞不出者，同丹皮或半夏为末，酒服），敛疮方
多用之（故名，每与白芨相须），搽冻耳（同黄柏末油调）。
蔓赤，枝有五叶，根如卵而长，三五枝同窠，皮乌肉白。一种赤蔹，功用皆用（郑奠一
曰∶能治温疟血痢，肠风痔 ，赤白带下）。
其味甘甜、淡平。是阳明经（胃、大肠）的主药，能健运脾胃，祛除风湿；脾胃健运则营卫之气调和顺畅，风湿祛除则筋骨关节灵活便利。能通利小便，止住腹泻。
治疗筋骨拘挛抽搐，杨梅疮毒（杨梅疮，古代医方中未记载。明代正德年间起源于岭南地区，其病症多属于阳明经和厥阴经，并兼及其他经络。这是因为相火寄居于厥阴经，而肌肉归属于阳明经的缘故。医生使用轻粉这种劫痰的药剂，其性质燥烈。进入阳明经劫去痰涎，从口齿排出，疮口随即干燥愈合。然而毒气窜入经络、筋骨，导致血液枯槁，筋脉失去滋养，变为拘挛、痈肿、瘘管，最终导致残疾废用。土茯苓能够制约轻粉的毒性，清除阳明经的湿热。用法：以一两为君药，配伍薏苡仁、金银花、防风、木通、木瓜、白鲜皮各五分，皂角子四分，气虚加人参七分，血虚加当归七分，名为搜风解毒汤），瘰疬疮肿（湿气郁结化为热邪，营卫不和，则生疮肿。《内经》说：湿气害人，表现为皮肤、肌肉、筋脉肿胀。土茯苓味淡能渗湿，味甘能补益，患脓疱疥疮者，煎汤代茶饮用，效果很好）。
（土茯苓）形状像鸭子大小，连接生长，俗称冷饭团。有赤、白两种，白色的品质较好。可以食用，也可以生吃。忌与茶同食。
（白蔹）功效为泻火，散结。
苦味能泄降，辛味能发散，甘味能缓和，寒性能除热。能杀灭火毒，消散结气，生肌止痛。
治疗痈疽疮肿，面部疮疡，金创跌打损伤（箭镞留在体内取不出来的，与丹皮或半夏研为末，酒送服），收敛疮口的方剂中多用此药（因此得名，常与白及相须为用），涂抹冻耳（与黄柏末用油调匀）。
藤蔓呈红色，枝条有五片叶子，根部像卵形且较长，三五枝同在一穴生长，外皮黑色，肉质白色。还有一种赤蔹，功效相同（郑奠一说：能治疗温疟血痢、肠风痔漏、赤白带下）。
(Tu Fuling) possesses a permeating nature, dispels damp-heat, and tonifies the Spleen and Stomach.
Its flavor is sweet, bland, and neutral. It is the principal herb for the Yangming (Stomach, Large Intestine) channel; it strengthens the Spleen and Stomach and dispels wind-dampness. When the Spleen and Stomach are strong, Ying and Wei (Nutritive and Defensive Qi) flow smoothly; when wind-dampness is expelled, sinews and bones become flexible. It promotes urination and stops diarrhea.
It treats spasm and contracture of sinews and bones, and yaws (Yaws was not recorded in ancient formulas. It originated in Lingnan during the Zhengde era of the Ming Dynasty. Its manifestations mostly involve the Yangming and Jueyin channels, extending to others. This is because Ministerial Fire resides in the Jueyin channel, while muscles belong to the Yangming channel. Physicians used Qingfen (Calomel), a drastic phlegm-resolving agent, which has a dry and fierce nature. Entering the Yangming channel, it expels phlegm-saliva through the mouth and teeth, causing sores to dry and heal. However, toxic vapors invade the collaterals, sinews, and bones, leading to emaciation of blood, loss of nourishment to sinews, resulting in contractures, carbuncles, and fistulas, ultimately causing disability. Tu Fuling can counteract the toxicity of Qingfen and clear damp-heat from the Yangming channel. Usage: Use 1 liang as the sovereign herb, combined with Yi Yi Ren (Coix Seed), Jin Yin Hua (Honeysuckle Flower), Fang Feng (Saposhnikovia Root), Mu Tong (Akebia Stem), Mu Gua (Chaenomeles Fruit), Bai Xian Pi (Dictamnus Bark), each 5 fen, and Zao Jiao Zi (Gleditsia Seed) 4 fen. For Qi deficiency, add Ren Shen (Ginseng Root) 7 fen; for Blood deficiency, add Dang Gui (Angelica Sinensis Root) 7 fen. This formula is named Sou Feng Jie Du Tang (Wind-Searching and Toxin-Resolving Decoction); scrofula and carbuncles (Dampness stagnates and transforms into heat; disharmony of Ying and Wei leads to sores and swelling. The Classics state: "Dampness harms people, manifesting as swelling of skin, flesh, and sinews." Tu Fuling's blandness penetrates dampness, and its sweetness tonifies. For those suffering from pustular scabies, decocting it as tea is highly effective).
(It resembles) a duck in size, growing in clusters, commonly known as Leng Fan Tuan (Cold Rice Ball). There are red and white varieties; the white one is superior. It is edible and can be eaten raw. Avoid consuming with tea.
(Bai Lian) functions to purge fire and dissipate nodules.
Bitterness drains downward, pungency disperses, sweetness moderates, and coldness eliminates heat. It kills fire-toxins, dissipates stagnant Qi, generates flesh, and relieves pain.
It treats carbuncles, sores, and swellings, facial ulcers, and traumatic injuries from metal weapons or falls (for arrowheads that cannot be extracted, mix with Dan Pi (Moutan Cortex) or Ban Xia (Pinellia Tuber) into powder, and take with wine); it is frequently used in formulas for wound contraction (hence its name, often used synergistically with Bai Ji (Bletilla Rhizome)); applied for frostbitten ears (mixed with Huang Bo (Phellodendron Bark) powder and oil).
The vine is red; branches have five leaves; roots are ovoid and elongated, with three to five stems sharing the same root system; the skin is black, and the flesh is white. There is also a variety called Chi Lian, which shares similar functions (Zheng Dianyi stated: It can treat warm malaria with bloody dysentery, intestinal wind with hemorrhoids, and leukorrhea with blood).