Herb Root (根 gēn)

Niu Bang Gen

Burdock root · 牛蒡根

Arctium lappa L. · Radix Arctii Lappae

Also known as: Burdock Root

Niu Bang Gen (Burdock root) plant

Images shown are for educational purposes only

Burdock root is a cooling herb long used in Chinese medicine to clear heat and reduce swelling, especially in the throat, gums, and skin. It is commonly taken for sore throats, skin eruptions, boils, and the early stages of colds with fever and headache. Also widely eaten as a vegetable in East Asia, it is considered a gentle, food-grade remedy suitable for detoxification and general wellness support.

Category Cool, acrid herbs that release the Exterior (辛凉解表药) Herbs that clear Heat and resolve Toxicity (清热解毒药)
Therapeutic focus Throat Health Skin Health Detoxification Immune Support

TCM Properties

Temperature

Cool

Taste

Bitter (苦 kǔ), Sweet (甘 gān)

Channels entered

Lungs, Heart

Parts used

Root (根 gēn)

Educational content • Consult qualified TCM practitioners for diagnosis and treatment

What This Herb Does

Every herb has a specific set of actions — here's what Niu Bang Gen does in the body, explained in both everyday and TCM terms

Therapeutic focus

In practical terms, Niu Bang Gen is primarily used to support these areas of health:

Throat Health Skin Health Detoxification Immune Support

TCM Actions

In TCM terminology, these are the specific therapeutic actions that Niu Bang Gen performs to restore balance in the body:

Disperses Wind-Heat Clears Heat and Resolves Toxicity Disperses Swelling and Dissipates Nodules Benefits the Throat Cools the Blood

How these actions work

'Disperses Wind-Heat' means Burdock root helps the body expel pathogenic Wind and Heat that invade from the outside, particularly affecting the head and upper body. This is why it is traditionally used at the early stages of colds and flu that present with fever, headache, sore throat, and cough. Its cool nature and bitter taste work together to clear Heat while gently releasing it outward through the body's surface.

'Clears Heat and resolves toxins' refers to the herb's ability to counteract inflammatory, infectious conditions where Heat and toxins have accumulated. This action explains its classical use for painful swellings, boils, abscesses, skin eruptions, and hot swollen gums or throat. Applied externally as a paste or taken internally as a decoction, the root directly addresses Heat-toxin conditions.

'Reduces swelling and dissipates nodules' describes how Burdock root can help shrink swollen, inflamed tissue and soften abnormal masses. Classical texts record its use for facial swelling from toxic Heat, swollen lymph nodes (goiter/scrofula), and even abdominal masses. This action stems from its bitter, descending quality combined with its cooling nature.

'Benefits the throat' means the root has a particular affinity for treating hot, swollen, painful throats. Whether from an acute infection like tonsillitis or from chronic Heat in the Lungs, Burdock root is commonly juiced or decocted and slowly swallowed to soothe throat inflammation.

Patterns Addressed

In TCM, symptoms cluster into recognizable patterns of disharmony. Niu Bang Gen is used to help correct these specific patterns.

Why Niu Bang Gen addresses this pattern

Burdock root's cool nature and bitter-sweet taste give it the ability to disperse Wind-Heat from the body's exterior. When Wind-Heat invades, it typically affects the Lung system first, causing fever, sore throat, headache, and cough. Burdock root enters the Lung channel, where it clears Heat from the surface while also benefiting the throat and promoting the venting of pathogenic factors outward. Its cooling property directly counteracts the Heat component, while its mildly dispersing quality helps release the Wind.

A practitioner would look for one or more of these signs

Sore Throat

Red, swollen, painful throat from external Wind-Heat

Headaches

Headache with fever at onset of a cold

Hypochondrial Pain That Is Worse On Coughing And Breathing

Cough with yellow phlegm from Lung Heat

Fever

Fever with mild chills in early-stage Wind-Heat invasion

Commonly Used For

These are conditions where Niu Bang Gen is frequently used — but only when they arise from the specific patterns it addresses, not in all cases

Arises from: Wind-Heat Heat Toxin

TCM Interpretation

In TCM, sore throat is most commonly understood as Heat affecting the throat, which is the gateway of the Lung and Stomach channels. Acute sore throat typically arises from external Wind-Heat invading and lodging in the throat, or from internal Heat-toxin flaring upward. The Lung channel passes through the throat, so when Wind-Heat or Heat-toxin accumulates there, it produces redness, swelling, and pain. In more severe cases (such as tonsillitis or peritonsillar abscess), the Heat becomes concentrated and toxic, producing more intense swelling and possibly suppuration.

Why Niu Bang Gen Helps

Burdock root directly enters the Lung channel and has a cool, bitter nature that clears Heat from the throat area. Its classical indication for 'hot swelling in the throat' is one of its most well-documented uses, recorded in multiple historical texts. The root can be juiced and slowly swallowed to deliver its cooling, toxin-resolving action directly to inflamed throat tissue. Its ability to both disperse external Wind-Heat and clear internal Heat-toxin makes it effective whether the sore throat is from an early-stage cold or from a deeper infectious process.

Also commonly used for

Common Cold

Wind-Heat type colds with fever, headache, and sore throat

Skin Abscess

Boils, carbuncles, and inflamed skin lesions from Heat-toxin

Eczema

Inflammatory skin conditions with redness and itching

Toothache

Hot toothache with gum swelling from accumulated Heat

Psoriasis

Chronic inflammatory skin disease

Lumps

Parotid gland swelling from Heat-toxin

Hemorrhoids

Hemorrhoids and rectal prolapse associated with Damp-Heat

Hypochondrial Pain That Is Worse On Coughing And Breathing

Cough from Lung Heat or residual pathogenic Heat

Herb Properties

Every herb has an inherent temperature, taste, and affinity for specific channels — these properties determine how it interacts with the body

Temperature

Cool

Taste

Bitter (苦 kǔ), Sweet (甘 gān)

Channels Entered

Lungs Heart

Parts Used

Root (根 gēn)

Dosage & Preparation

These are general dosage guidelines for Niu Bang Gen — always follow your practitioner's recommendation, as dosages vary based on the formula and your individual condition

Standard dosage

6–15g

Maximum dosage

Up to 30g in decoction for acute heat-toxin conditions, under practitioner supervision. As a food herb with low toxicity, higher amounts are sometimes used short-term.

Dosage notes

Use lower doses (6–9g) for mild wind-heat conditions such as sore throat or headache. Use higher doses (12–15g) for pronounced toxic swelling, abscesses, or painful gum inflammation. Fresh root juice can be taken directly for acute conditions (a small cup at a time, as described in classical formulas). When used as a long-term dietary supplement or food (burdock tea), 2–6g of dried root per day is typical. The classical text Ben Cao Shi Yi advises that the root should be steamed and then dried before internal use, as improperly prepared root may cause nausea or vomiting.

Preparation

The classical text Ben Cao Shi Yi (本草拾遗) specifically advises that the root must be steamed and then sun-dried before internal use, otherwise it may cause nausea and vomiting. No special decoction handling (such as decocting first or wrapping in cloth) is required once the root is properly prepared. Fresh root juice is also used by pounding and straining for acute external or internal applications.

Processing Methods

In TCM, the same herb can be prepared in different ways to change its effects — here's how processing alters what Niu Bang Gen does

Processing method

The fresh root is steamed and then sun-dried. This processing step is considered essential, as classical texts (Ben Cao Shi Yi) warn that unprocessed dried root may cause nausea and vomiting.

How it changes properties

Steaming reduces the root's harsh, slightly nauseating quality and makes it more digestible for internal use. The thermal nature remains cool but becomes gentler on the stomach. The core actions of clearing Heat and resolving toxins are preserved.

When to use this form

Use the steamed and dried form whenever taking Burdock root internally as a decoction. The fresh root can be juiced directly for acute conditions or applied externally as a poultice without steaming.

Common Herb Pairs

These ingredients are traditionally combined with Niu Bang Gen for enhanced therapeutic effect

Jin Yin Hua
Jin Yin Hua 1:1 (equal parts, typically 10-15g each)

Burdock root and Honeysuckle flower together powerfully clear Heat and resolve toxins while dispersing Wind-Heat. Jin Yin Hua is one of the strongest Heat-clearing, toxin-resolving herbs, and when combined with Burdock root's throat-benefiting and swelling-reducing properties, the pair addresses both the surface invasion and the deeper toxic accumulation.

When to use: For sore throat, skin boils, and carbuncles with signs of Heat-toxin, or for the early stages of febrile illness with pronounced throat symptoms.

Lian Qiao
Lian Qiao 1:1 (equal parts, typically 10-15g each)

Burdock root and Forsythia fruit together clear Heat, resolve toxins, and reduce swelling. Lian Qiao is especially effective at dispersing clumped Heat-toxin and promoting the drainage of abscesses, while Burdock root contributes its cooling, throat-soothing action. Together they form a strong anti-inflammatory, anti-infective pair.

When to use: For swollen lymph nodes, skin abscesses in early stages, tonsillitis, and mumps where Heat-toxin is prominent.

Jie Geng
Jie Geng 1:1 (Burdock root 10g : Jie Geng 6-10g)

Burdock root clears Heat from the throat while Jie Geng (Platycodon root) opens and ventilates the Lung Qi and directs other herbs upward to the throat. Together they form a targeted pair for throat and upper respiratory conditions, combining Heat-clearing with Qi-moving action to relieve swelling and restore voice.

When to use: For sore throat, loss of voice, cough with phlegm, and upper respiratory infections where Heat obstructs the throat and Lungs.

Lu Gen
Lu Gen 1:2 (Burdock root 10g : Lu Gen 15-30g)

Burdock root clears Heat-toxin and benefits the throat, while Lu Gen (Reed rhizome) clears Heat from the Lung and Stomach, generates fluids, and promotes urination to drain Heat downward. Together they address febrile conditions with thirst, restlessness, and throat pain by cooling Heat while protecting Body Fluids.

When to use: For lingering febrile illness with thirst, restlessness, irritability, and dry throat where Heat is injuring fluids.

Comparable Ingredients

These ingredients have overlapping uses — here's how to tell them apart

Niu Bang Zi
Niu Bang Gen vs Niu Bang Zi

Niu Bang Zi (Burdock seed/fruit) and Niu Bang Gen (Burdock root) come from the same plant but are used quite differently. Niu Bang Zi is cold, acrid, and bitter, entering the Lung and Stomach channels, and is the far more commonly used medicinal form. It excels at dispersing Wind-Heat, venting rashes (measles), benefiting the throat, and moistening the intestines. Niu Bang Gen is cool, bitter, and slightly sweet, entering the Lung and Heart channels, and has a stronger affinity for clearing Heat-toxin from swellings, boils, and gum infections. The root is often applied externally as a poultice and is also widely eaten as a food, while the seed is strictly medicinal.

Ban Lan Gen
Niu Bang Gen vs Ban Lan Gen

Both Burdock root and Ban Lan Gen (Isatis root) clear Heat and resolve toxins with a particular focus on the throat. However, Ban Lan Gen is cold (not just cool) and far more powerful at resolving severe Heat-toxin, making it the preferred choice for acute, high-fever conditions with severe throat swelling, epidemic febrile diseases, and mumps. Burdock root is milder, has more of a Wind-Heat dispersing quality, and doubles as a food-grade herb suitable for gentler or longer-term use.

Pu Gong Ying
Niu Bang Gen vs Pu Gong Ying

Both Burdock root and Pu Gong Ying (Dandelion) clear Heat and resolve toxins, and both come from the Asteraceae family. Pu Gong Ying is cold and more strongly focused on clearing Liver and Stomach Heat-toxin, especially for breast abscesses (mastitis) and eye inflammation. Burdock root is cooler and gentler, with a stronger affinity for the Lung channel and throat conditions. Pu Gong Ying is more draining and better for deep-seated abscesses, while Burdock root is better for surface-level Wind-Heat and throat inflammation.

Identity & Adulterants

Related species and common adulterations to be aware of when sourcing Niu Bang Gen

The most serious safety concern with burdock root is contamination with belladonna (Atropa belladonna) root, which has a similar appearance but is highly toxic. Cases of anticholinergic poisoning from commercial "burdock root tea" have been traced to belladonna adulteration. For the seed (Niu Bang Zi), the fruits of Onopordon acanthium (cotton thistle) have been found substituted in some regions (notably Shandong and Xinjiang); these can be distinguished by their fine horizontal wrinkles between longitudinal veins, unlike the true burdock seed. Yunmu Xiang (Saussurea lappa) fruits have also occasionally been found mixed in. Always source burdock root from reputable suppliers who can guarantee botanical identity.

Educational content — always consult a qualified healthcare provider or TCM practitioner before using any herb.

Toxicity Classification

Classical Chinese pharmacopoeia toxicity rating for Niu Bang Gen

Non-toxic

Niu Bang Gen is classified as non-toxic in classical sources (the Ben Cao Gang Mu explicitly states 无毒, "non-toxic"). The root is widely consumed as a vegetable food in East Asia with no reported toxicity at normal dietary or medicinal doses. The primary safety concern is not the herb itself but contamination: historically, burdock root has occasionally been confused with or adulterated by belladonna (Atropa belladonna) root, which is highly toxic and can cause anticholinergic poisoning. Cases of poisoning attributed to "burdock root tea" in the 1980s were traced to belladonna contamination, not to burdock itself. Always source from reputable suppliers to avoid this risk.

Contraindications

Situations where Niu Bang Gen should not be used or requires extra caution

Caution

Spleen and Stomach deficiency cold (脾胃虚寒) with chronic loose stools or diarrhea. Niu Bang Gen is bitter and cool in nature, which can further damage weakened digestive function and worsen diarrhea.

Caution

Pregnancy. Burdock root may stimulate uterine contractions and should be avoided during pregnancy as a precaution.

Avoid

Allergy to Asteraceae (daisy) family plants. Individuals allergic to ragweed, chrysanthemums, marigolds, or daisies may experience allergic reactions including contact dermatitis or, rarely, anaphylaxis.

Caution

Concurrent use with anticoagulant or antiplatelet medications. Burdock root may slow blood clotting, increasing the risk of bleeding when combined with blood-thinning drugs.

Caution

Use within two weeks before scheduled surgery, due to the potential increased risk of bleeding.

Caution

Concurrent use with hypoglycemic medications. Burdock root may lower blood sugar, risking hypoglycemia when combined with insulin or oral diabetes drugs.

Special Populations

Important considerations for pregnancy, breastfeeding, and pediatric use

Pregnancy

Burdock root should be avoided during pregnancy. It has traditionally been reported to potentially stimulate uterine contractions. While it is widely consumed as a food in East Asia, medicinal doses are more concentrated and the safety margin is uncertain. Classical sources note that the root should be steamed and dried before use to prevent nausea (the Ben Cao Shi Yi warns it can cause vomiting if improperly prepared), adding another reason for caution in pregnancy.

Breastfeeding

There is insufficient specific safety data on Niu Bang Gen during breastfeeding. While burdock root is widely consumed as a food in Japan and other parts of East Asia, its safety as a medicinal herb during lactation has not been formally studied. The root's cold, bitter nature could theoretically affect digestion in sensitive nursing infants if compounds transfer into breast milk. Use with caution and under practitioner guidance during breastfeeding.

Children

There are no well-established pediatric dosing guidelines for Niu Bang Gen. Classical sources do record its use for children's sore throat (the Pu Ji Fang recommends fresh root juice swallowed slowly for pediatric throat swelling). When used in children, doses should be reduced to approximately one-third to one-half of the adult dose depending on the child's age and weight, and always under practitioner supervision. As a food, burdock root is generally considered safe for children in culinary amounts.

Drug Interactions

If you are taking pharmaceutical medications, be aware of these potential interactions with Niu Bang Gen

Anticoagulant and antiplatelet medications: Burdock root saccharides have been shown in preclinical studies to inhibit platelet aggregation. Combining burdock root with blood-thinning drugs such as warfarin, heparin, clopidogrel (Plavix), or aspirin may increase the risk of bruising and bleeding. Discontinue burdock root at least two weeks before scheduled surgery.

Hypoglycemic medications: Burdock root may lower blood sugar levels. Combined use with insulin, sulfonylureas (glimepiride, glyburide), or other diabetes medications could lead to hypoglycemia. Blood glucose should be monitored closely if burdock root is used alongside these drugs.

Diuretic medications: Burdock root has natural diuretic properties. Combining it with prescription diuretics (furosemide, hydrochlorothiazide) may cause excessive fluid loss, dehydration, and electrolyte imbalance, particularly in individuals with kidney or heart conditions.

Dietary Advice

Foods and dietary considerations when taking Niu Bang Gen

When taking Niu Bang Gen for wind-heat or heat-toxin conditions, favor light, easily digestible foods and avoid greasy, fried, or overly spicy foods that may generate more internal Heat. Classical sources specifically note to avoid garlic and wheat-flour foods (忌蒜、面) when using burdock root for throat conditions. Since the herb is cooling in nature, people with cold constitutions or weak digestion should accompany it with warming foods such as ginger or warm soups to protect the Stomach.

Botanical Description

Physical characteristics and morphology of the Niu Bang Gen source plant

Arctium lappa L. (Greater Burdock) is a robust biennial herb in the Asteraceae (daisy) family, native to temperate Eurasia and now widely naturalized across the world. In its first year, the plant forms a dense rosette of very large, heart-shaped basal leaves with long petioles. The leaves can reach 20–50 cm long and 15–40 cm wide, dark green above and densely covered with grey-white woolly hairs beneath.

In its second year, the plant sends up a stout, branching stem that can reach 1–3 metres in height, with purplish-brown ridged stems. Globular flower heads (2–4 cm across) appear from mid-summer, bearing small purple tubular florets surrounded by hooked bracts that form the characteristic "burrs" enabling seed dispersal on animal fur. The medicinal root is a thick, fleshy taproot that can grow up to 1 metre deep, spindle-shaped, with blackish-brown wrinkled outer skin and yellowish-white flesh inside. The plant grows along roadsides, in waste ground, forest margins, and near villages, preferring moist, nitrogen-rich, well-drained soils in full sun to partial shade.

Sourcing & Harvesting

Where Niu Bang Gen is sourced, when it's harvested or collected, and how to assess quality

Harvesting season

October (autumn), after the plant has grown for at least 2 years; the root is dug up, washed clean, and dried in the sun.

Primary growing regions

Niu Bang Gen is produced across much of China, with the best quality traditionally coming from the northeastern provinces of Jilin, Liaoning, and Heilongjiang, as well as Zhejiang province. Modern large-scale cultivation is concentrated in Jiangsu and Shandong provinces. The plant also grows wild throughout temperate Eurasia, including Japan, Korea, and across Europe, where it naturalizes readily in disturbed, nitrogen-rich soils.

Quality indicators

Good quality Niu Bang Gen root is spindle-shaped, fleshy, and firm. The outer skin should be blackish-brown with clear wrinkles. On cross-section, the interior should be yellowish-white, moist, and slightly sticky (mucilaginous) rather than dry or hollow. The taste should be slightly bitter with a distinctive sticky, mucilaginous mouthfeel. Avoid roots that are overly woody, fibrous, or have darkened or discolored interiors, as these indicate old age or poor storage. The root should snap cleanly rather than bend, indicating proper drying. Fresh roots should be crisp and free of soft spots or mold.

Classical Texts

Key passages from the classical Chinese medical texts that describe Niu Bang Gen and its therapeutic uses

《本草纲目》(Ben Cao Gang Mu) — Li Shizhen, Ming Dynasty

Original: 「苦，寒，无毒。」
Translation: "Bitter, cold, non-toxic."

《唐本草》(Tang Ben Cao / Xin Xiu Ben Cao) — Tang Dynasty

Original: 「主牙齿疼痛，劳疟，脚缓弱，风毒，痈疽，咳嗽伤肺，肺壅；疝瘕，积血。主诸风，症瘕，冷气。」
Translation: "Treats toothache, malarial fevers, weak legs, wind-toxin [conditions], abscesses, cough injuring the Lung, Lung congestion; hernias and accumulations, stagnant Blood. Treats all Wind disorders, masses and accumulations, and cold Qi."

《药性论》(Yao Xing Lun) — Zhen Quan, Tang Dynasty

Original: 「根，细切如豆，面拌作饭食之，消胀壅。又能拓一切肿毒，用根、叶少许盐花捣。」
Translation: "The root, finely sliced like beans and mixed with flour to make food, disperses bloating and congestion. It can also draw out all kinds of toxic swelling: pound the root and leaves with a little salt and apply."

《本草正义》(Ben Cao Zheng Yi) — Zhang Shanlei, Qing Dynasty

Original (excerpt on the root): 「其根茎，则濒湖《纲目》谓之苦寒，《别录》主治，皆除热通利之意。盖其功力，本与子相近，而寒凉疏泄之性过之。」
Translation: "As for its root and stem, Li Shizhen's Ben Cao Gang Mu describes them as bitter and cold. The Bie Lu indications all point to clearing Heat and promoting free flow. Its power is similar to the seed, but its cold, cooling, dispersing nature is even stronger."

Historical Context

The history and evolution of Niu Bang Gen's use in Chinese medicine over the centuries

The burdock plant was first recorded in Chinese medical literature in the Ming Yi Bie Lu (名医别录, Supplementary Records of Famous Physicians) during the Wei-Jin period (3rd–4th century CE), where it appeared under the name "Ě Shí" (恶实). The Xin Xiu Ben Cao (新修本草, Tang Dynasty, 659 CE) later clarified: "Ě Shí, the Bie Lu names it Niú Bàng." The Chinese name "Niú Bàng" poetically describes the plant: "Niú" (ox) refers to the robust, vigorous growth of its stems and leaves, while "Bàng" suggests dense, wild growth.

The root has been eaten as food in China since at least the Tang Dynasty. The agricultural text Si Shi Zuan Yao (四时纂要) by Han È instructed: "After the eighth month, harvest the root to eat." The physician Mèng Shēn's Shi Liao Ben Cao (食疗本草) also recommended it as a food. Burdock was transmitted from China to Japan around the 10th century and became a beloved vegetable there (known as gobō), eventually being bred into the long, slender root cultivars now cultivated commercially. In European herbal traditions, burdock root was valued as a blood purifier and alterative, and it became an ingredient in the folk cancer remedy known as Essiac tea. Li Shizhen's Ben Cao Gang Mu (1596) praised burdock for its ability to "penetrate all twelve channels and eliminate evil Qi from the five organs."

Modern Research

4 published studies investigating the pharmacological effects or clinical outcomes of Niu Bang Gen

1

Effects of Arctium lappa L. (Burdock) root tea on inflammatory status and oxidative stress in patients with knee osteoarthritis (RCT, 2016)

Maghsoumi-Norouzabad L, Alipoor B, Abed R, Eftekhar Sadat B, Mesgari-Abbasi M, Asghari Jafarabadi M. International Journal of Rheumatic Diseases. 2016;19(3):255-261.

A randomized controlled trial involving 36 patients with knee osteoarthritis found that drinking burdock root tea (three cups daily for 42 days) significantly improved inflammatory markers (hs-CRP, IL-6) and oxidative stress indicators compared to the control group, suggesting anti-inflammatory and antioxidant benefits.

DOI
2

Saccharides from Arctium lappa L. root reduce platelet activation and thrombus formation in a laser injury thrombosis mouse model (Preclinical, 2022)

National Clinical Research Centre for Cardiovascular Diseases, Beijing Anzhen Hospital, Capital Medical University. Published 2022.

This preclinical study demonstrated that saccharides extracted from burdock root inhibited platelet aggregation, ATP release, and thrombus formation in a concentration-dependent manner, both in vitro and in a mouse thrombosis model. This supports the traditional observation that burdock root has blood-moving properties and suggests caution with anticoagulant medications.

PubMed
3

Harnessing the power of Arctium lappa root: a review of its pharmacological properties and therapeutic applications (Review, 2024)

Department of Biotechnology, VIT University, Vellore, India. Natural Products and Bioprospecting. 2024;14(1):49.

A comprehensive review summarizing evidence that burdock root extract demonstrates hepatoprotective, antidiabetic, hypolipidemic, anti-inflammatory, antioxidant, and antimicrobial properties. The root is rich in polyphenolic antioxidants, flavonoids, and fructo-oligosaccharides with therapeutic potential.

DOI
4

Gastroprotective activity of the chloroform extract of the roots from Arctium lappa L. (Preclinical, 2008)

Dos Santos AC, Baggio CH, Freitas CS, et al. Journal of Pharmacy and Pharmacology. 2008;60(6):795-801.

Oral pretreatment with burdock root chloroform extract significantly reduced gastric lesions induced by ethanol in rats (by 61–76% depending on dose) and reduced chronic gastric ulceration induced by acetic acid by 52%, demonstrating meaningful gastroprotective effects.

DOI

Research on individual TCM herbs is growing but still limited by Western clinical trial standards. These studies provide emerging evidence and should be considered alongside practitioner expertise.