辛，甘，无毒。入足阳明经。解肌退热升阳散火，止呕除泻，生津解渴。降冲逆而定喘，
解
酒毒而散郁。除眼眶项背之强痛，退胸膈心下之邪热。血痢温疟之疾，肠风疹痘之 。
在处有之。其根外紫内白，蔓生。其叶有三尖，面青背淡。其花成穗红紫色。其荚如小
黄豆
金疮中风，痉强欲死，水煎四两服。仍合竹沥服。（验方第一。）
服药过剂，水煎服。（第二。）
中服药毒，方同上。（第三。）
酒醉不醒。同上。（第四。）
小儿吐血，水煎服。（第五。）
衄血。同上。（第六。）
热毒下血，与藕节合服。（第七。）
干呕不已，水煎服。（第八。）
伤寒头痛，发热脉洪，水煎汗之。（第九。）
疖子初起，葛蔓烧末，水合敷。（第十。）
消酒，葛花煎服，饮酒不醉。（十一。）
目眶痛，葛根煎服。（十二。）
葛根汤 桂枝 白芍 炙草 姜 枣 葛根 麻黄
治项背强几几，无汗恶风。又治下痢兼太阳表症者。又治刚痉口噤，气冲项强，溺少无
汗。
（诸方第一。）
桂枝加葛根汤 桂枝 白芍 炙草 姜 枣 葛根
治项背强几几，有汗恶风。（第二。）
葛连芩甘汤 葛根 黄连 黄芩 甘草
治下后下利脉促，喘而汗出者。（第三。）
性味辛、甘，无毒。归足阳明胃经。具有解除肌表邪气、退热、升发阳气、疏散郁火的功效；能止呕、消除腹泻、生津液、解口渴。能平降冲逆之气而安定喘息，解除酒毒并疏散郁结。可去除眼眶、项部及背部的强直疼痛，消退胸膈及心下部位的邪热。适用于血痢、温疟等疾病，以及肠风、疹痘等病症。
葛根在各地均有生长。其根部外皮呈紫色，内部为白色，呈藤蔓状生长。叶片有三尖，正面青色，背面颜色较淡。花朵成穗状，呈红紫色。豆荚形状像小黄豆。
【验方】
1. 金疮（金属利器造成的创伤）感染中风邪，出现痉挛强直、濒临死亡的症状，用水煎煮四两葛根服用。同时配合竹沥一起服用。（第一验方）
2. 葛根服药过量导致中毒，用水煎煮服用解救。（第二验方）
3. 误服其他药物中毒，方法同上。（第三验方）
4. 醉酒不醒，方法同上。（第四验方）
5. 小儿吐血，用水煎煮服用。（第五验方）
6. 鼻出血（衄血），方法同上。（第六验方）
7. 热毒导致的便血，与藕节合用服用。（第七验方）
8. 干呕不止，用水煎煮服用。（第八验方）
9. 伤寒引起的头痛，发热且脉象洪大，用水煎煮后发汗治疗。（第九验方）
10. 疖子初起，将葛蔓烧成粉末，用水调和外敷。（第十验方）
11. 解酒毒，用葛花煎煮服用，饮酒时同服可不醉。（第十一验方）
12. 眼眶疼痛，用葛根煎煮服用。（第十二验方）
【方剂】
葛根汤：由桂枝、白芍、炙甘草、生姜、大枣、葛根、麻黄组成。
主治项背部强直不适（几几），无汗且恶风。又主治伴有太阳表证的腹泻。又主治刚痉（表现为牙关紧闭、身体强直），气冲头部致项部强直，小便少且无汗。
（诸方中的第一方）
Pungent, sweet, non-toxic. Enters the Foot-Yangming Meridian (Foot-Stomach Meridian). It releases the muscle layer, reduces fever, raises yang, and disperses fire. It stops vomiting, eliminates diarrhea, generates body fluids, and quenches thirst. It descends rebellious qi to calm wheezing, resolves alcohol toxicity, and dissipates stagnation. It removes stiffness and pain in the eye sockets, neck, and back, and clears pathogenic heat from the chest, diaphragm, and epigastrium. It treats blood dysentery and warm malaria, as well as conditions such as intestinal wind, rashes, and smallpox.
It is found everywhere. Its root is purple on the outside and white on the inside, growing as a vine. Its leaves have three points, green on the front surface and pale on the back. Its flowers grow in spikes and are red-purple. Its pods resemble small soybeans.
[Verified Formulas]
1. For traumatic wounds infected by wind-pathogen, presenting with spasms, rigidity, and impending death: Decoct four liang of Ge Gen (Kudzu Root) in water and take it. Administer concurrently with Zhu Li (Bamboo Sap). (Formula No. 1)
2. For overdose of Ge Gen (Kudzu Root): Decoct in water and take to resolve toxicity. (Formula No. 2)
3. For poisoning from other medicinal substances: Same method as above. (Formula No. 3)
4. For severe alcohol intoxication with unconsciousness: Same method as above. (Formula No. 4)
5. For hematemesis in children: Decoct in water and take. (Formula No. 5)
6. For epistaxis (nosebleed): Same method as above. (Formula No. 6)
7. For lower bleeding caused by heat-toxin: Take combined with Ou Jie (Lotus Node). (Formula No. 7)
8. For persistent dry retching: Decoct in water and take. (Formula No. 8)
9. For headache due to Shanghan (Cold Damage), with fever and a flooding pulse: Decoct in water and induce sweating. (Formula No. 9)
10. For early-stage furuncles: Burn the Ge Man (Kudzu Vine) to ash, mix with water, and apply externally. (Formula No. 10)
11. To resolve alcohol toxicity: Decoct Ge Hua (Kudzu Flower) and take; consuming this while drinking prevents intoxication. (Formula No. 11)
12. For orbital pain: Decoct Ge Gen (Kudzu Root) and take. (Formula No. 12)
[Formulas]
Ge Gen Tang (Kudzu Root Decoction): Composed of Guizhi (Cinnamon Twig), Baishao (White Peony Root), Zhi Gancao (Honey-fried Licorice Root), Shengjiang (Fresh Ginger), Dazao (Jujube), Ge Gen (Kudzu Root), and Mahuang (Ephedra Herb).
Indications: Stiffness and discomfort in the neck and back (Ji Ji), absence of sweating, and aversion to wind. Also indicates diarrhea accompanied by Taiyang exterior syndrome. Also indicates Gang Jing (Yang Spasm) characterized by trismus (lockjaw), qi rushing upward causing neck rigidity, oliguria, and absence of sweating.
(First among various formulas)
Guizhi Jia Ge Gen Tang (Cinnamon Twig Decoction plus Kudzu Root): Composed of Guizhi (Cinnamon Twig), Baishao (White Peony Root), Zhi Gancao (Honey-fried Licorice Root), Shengjiang (Fresh Ginger), Dazao (Jujube), and Ge Gen (Kudzu Root).
Indications: Stiffness and discomfort in the neck and back (Ji Ji), presence of sweating, and aversion to wind. (Second formula)
Ge Lian Qin Gan Tang (Kudzu, Coptis, Scutellaria, and Licorice Decoction): Composed of Ge Gen (Kudzu Root), Huanglian (Coptis Rhizome), Huangqin (Scutellaria Root), and Gancao (Licorice Root).
Indications: Diarrhea with a rapid pulse, wheezing, and sweating following inappropriate purgative treatment. (Third formula)