Herb Tuber (块茎 kuài jīng / 块根 kuài gēn)

He Shou Wu

Fleeceflower Root · 何首乌

Polygonum multiflorum Thunb. · Radix Polygoni Multiflori

Also known as: Shou Wu (首乌), Fo-Ti

He Shou Wu (Fleeceflower Root) plant

Images shown are for educational purposes only

He Shou Wu (Fo-Ti) is one of the most famous Chinese herbs for supporting healthy aging and hair vitality. In its processed form, it is traditionally used to nourish the Liver and Kidneys, strengthen the blood, and address premature greying and hair loss. In its raw form, it gently eases constipation and helps clear skin sores. It should only be used under professional guidance due to potential liver sensitivity in some individuals.

Category Blood-tonifying herbs (补血药)
Therapeutic focus Hair Health Healthy Aging Digestive Regularity Kidney Health

TCM Properties

Temperature

Slightly Warm

Taste

Bitter (苦 kǔ), Sweet (甘 gān), Astringent (涩 sè)

Channels entered

Liver, Kidneys

Parts used

Tuber (块茎 kuài jīng / 块根 kuài gēn)

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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 He Shou Wu does in the body, explained in both everyday and TCM terms

Therapeutic focus

In practical terms, He Shou Wu is primarily used to support these areas of health:

Hair Health Healthy Aging Digestive Regularity Kidney Health

TCM Actions

In TCM terminology, these are the specific therapeutic actions that He Shou Wu performs to restore balance in the body:

Resolves Toxicity Checks Malaria Moistens the Intestines and Unblocks the Bowels Dispels Wind and Stops Itching

How these actions work

'Resolves toxins' means that raw He Shou Wu has the ability to clear toxic swellings and sores. In traditional practice, it was used for conditions like scrofula (lumps in the neck), skin abscesses, and carbuncles. It can be combined with herbs like Xuan Shen (Scrophularia) and Lian Qiao (Forsythia) for this purpose.

'Intercepts malaria' refers to raw He Shou Wu's traditional use in treating lingering, chronic malaria. Classical texts describe it as entering the Shao Yang (Gallbladder/Triple Burner) channel, where malarial pathogens reside. It was typically used for long-standing malaria in debilitated patients rather than acute attacks.

'Moistens the Intestines and unblocks the bowels' means that the raw herb has a gentle laxative effect. It contains anthraquinone compounds that stimulate bowel movement. This makes raw He Shou Wu useful for constipation due to Blood deficiency and intestinal dryness, especially in elderly or weakened patients.

'Dispels wind from the skin' refers to raw He Shou Wu's use in treating itchy skin rashes and sores. A classical formula, He Shou Wu San, combines it with Fang Feng, Ku Shen, and Bo He as an external wash for widespread skin lesions with itching and pain.

Important note: These actions describe the raw (shēng) form only. The processed form (Zhi He Shou Wu) has very different actions: it tonifies the Liver and Kidneys, nourishes Essence and Blood, darkens the hair, and strengthens sinews and bones. The two forms should never be confused.

Patterns Addressed

In TCM, symptoms cluster into recognizable patterns of disharmony. He Shou Wu is used to help correct these specific patterns.

Why He Shou Wu addresses this pattern

He Shou Wu (in its processed form) directly nourishes the Liver and Kidney Yin by replenishing Essence (Jīng) and Blood. Its bitter taste enters the Kidneys and its sweet taste nourishes, while its astringent nature helps consolidate Essence and prevent its leakage. Because it enters the Liver and Kidney channels, it addresses the root cause of this pattern: insufficient Yin and Blood failing to nourish the hair, eyes, sinews, and bones. It is considered milder and less cloying than Shu Di Huang (prepared Rehmannia), making it suitable for long-term use in many patients.

A practitioner would look for one or more of these signs

Premature Greying of Hair

A hallmark sign of Kidney Essence and Liver Blood deficiency

Dizziness

From Blood failing to nourish the head

Tinnitus

Kidney insufficiency affecting the ears

Lower Back Pain

Lumbar aching and knee weakness from Liver-Kidney deficiency

Blurry Vision

Liver Blood failing to nourish the eyes

Commonly Used For

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

Arises from: Heart and Kidney Yin Deficiency Blood Deficiency

TCM Interpretation

In Chinese medicine, the colour and lustre of the hair depend on the health of two organ systems: the Kidneys and the Liver. The Kidneys store Essence (Jīng), which is the deep constitutional substance responsible for growth, reproduction, and the vitality of hair. The Liver stores Blood, which nourishes and moistens hair. When Kidney Essence declines or Liver Blood becomes insufficient, whether through aging, overwork, chronic illness, or constitutional weakness, the hair loses its pigment and turns grey or white prematurely. This is considered a sign of internal depletion rather than a cosmetic issue.

Why He Shou Wu Helps

Processed He Shou Wu is the single herb most strongly associated with addressing premature greying in Chinese medicine. Its name literally means 'Black-haired Mr He,' reflecting its legendary reputation. It enters the Liver and Kidney channels directly and replenishes both Essence and Blood simultaneously. Its bitter taste nourishes the Kidneys (bitter 'firms' the Kidneys in classical theory), its sweet taste generates Blood, and its astringent quality helps retain Essence so it is not lost. Modern research suggests it may promote melanin synthesis in hair follicles. It is almost always used in its processed (Zhi) form for this purpose, and typically combined with other Liver-Kidney tonics such as Gou Qi Zi (Goji berry), Nu Zhen Zi (Ligustrum), and Sang Shen (Mulberry fruit) for best results.

Also commonly used for

Constipation

Raw form used for blood-deficient intestinal dryness in elderly patients

Dizziness

From Liver-Kidney or Blood deficiency

Tinnitus

Related to Kidney Yin deficiency

Insomnia

From Blood deficiency failing to nourish the Heart Spirit

Lower Back Pain

From Liver-Kidney insufficiency with weak sinews and bones

Infertility

Male infertility from Kidney Essence deficiency

Spermatorrhea

Astringent nature helps consolidate Kidney Essence

Herb Properties

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

Temperature

Slightly Warm

Taste

Bitter (苦 kǔ), Sweet (甘 gān), Astringent (涩 sè)

Channels Entered

Liver Kidneys

Parts Used

Tuber (块茎 kuài jīng / 块根 kuài gēn)

Dosage & Preparation

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

Standard dosage

Processed (Zhi Shou Wu): 6-12g; Raw (Sheng Shou Wu): 3-6g

Maximum dosage

Processed He Shou Wu: up to 15-20g under practitioner supervision for short courses. Raw He Shou Wu should not exceed 6g. Prolonged use at any dose increases hepatotoxicity risk.

Dosage notes

The two forms of He Shou Wu have very different dosage ranges and purposes. Processed He Shou Wu (Zhi Shou Wu, made with black bean juice) is the form used as a Blood and Kidney tonic at 6-12g. Raw He Shou Wu (Sheng Shou Wu) is used only for specific short-term purposes such as constipation due to Blood-dryness, malaria, or topical application for sores and skin conditions, at the lower dose of 3-6g. The Chinese Pharmacopoeia reduced the recommended raw He Shou Wu dose from 6-12g to 3-6g following hepatotoxicity reports. Clinical applications should start at the lower end of the dose range and increase gradually. Prolonged continuous use should be avoided, and periodic liver function monitoring is advisable for any course lasting more than a few weeks. Iron vessels should not be used when decocting He Shou Wu, as tannins in the herb react with iron to form potentially harmful compounds. This is a classical instruction that remains clinically relevant.

Preparation

Do not decoct in iron vessels. Classical and modern sources agree that the tannins in He Shou Wu react with iron to produce undesirable compounds. Use ceramic, enamel, or stainless steel pots. Otherwise, He Shou Wu is decocted normally with other herbs.

Processing Methods

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

Processing method

The raw herb is steamed with black soybean (Hēi Dòu) juice until the liquid is fully absorbed and the herb turns a deep brownish-black colour. Traditionally nine cycles of steaming and sun-drying were used, though modern pharmacopoeia methods use a standardized single steaming cycle. The ratio is typically 10 kg of black soybeans per 100 kg of He Shou Wu.

How it changes properties

Processing fundamentally transforms this herb. The raw form is slightly warm, bitter-astringent, and primarily resolves toxins, moistens the bowels, and intercepts malaria. The processed form becomes warmer and sweeter in taste, with its laxative (purgative anthraquinone) content greatly reduced and its tonic properties enhanced. Processed He Shou Wu nourishes the Liver and Kidneys, replenishes Essence and Blood, darkens hair, and strengthens sinews and bones. The hepatotoxic anthraquinone compounds are significantly reduced through proper processing.

When to use this form

Use the processed form (Zhi He Shou Wu) for all tonic and nourishing purposes: premature greying of hair, hair loss, dizziness from Blood deficiency, aching lower back and knees from Liver-Kidney insufficiency, tinnitus, blurred vision, insomnia, and spermatorrhea. This is by far the more commonly used form in clinical practice. Should not be used in patients with loose stools, Dampness, or Spleen deficiency.

Common Herb Pairs

These ingredients are traditionally combined with He Shou Wu for enhanced therapeutic effect

Dang Gui
Dang Gui 1:1 (e.g. 15g : 15g)

He Shou Wu and Dang Gui (Angelica root) together create a powerful Blood-nourishing pair. He Shou Wu replenishes Liver-Kidney Essence and Blood with its astringent, consolidating nature, while Dang Gui invigorates and moves Blood with its aromatic warmth. Together they both generate new Blood and keep it circulating freely, preventing the stagnation that can occur with pure tonification.

When to use: Blood deficiency with signs such as dizziness, pallor, insomnia, hair loss, and premature greying. Also used for Blood-deficient constipation in the elderly.

Gou Qi Zi
Gou Qi Zi 1:1 to 2:1 (He Shou Wu : Gou Qi Zi, e.g. 15g : 10g)

He Shou Wu and Gou Qi Zi (Goji berry) are a classic Liver-Kidney nourishing pair. Both enter the Liver and Kidney channels. He Shou Wu focuses on replenishing Essence and Blood with an astringent quality, while Gou Qi Zi nourishes Liver and Kidney Yin and brightens the eyes. Their combined effect is stronger nourishment of the Liver-Kidney axis than either herb alone.

When to use: Liver-Kidney deficiency with premature greying, blurred vision, dizziness, tinnitus, and lower back weakness. The foundation of many longevity and anti-aging formulas.

Hei Zhi Ma
Hei Zhi Ma 1:1 (e.g. 15g : 15g)

He Shou Wu paired with Hei Zhi Ma (black sesame seeds) doubles down on nourishing the Liver and Kidneys to darken hair and moisten dryness. Both herbs share the ability to nourish Essence and Blood. Hei Zhi Ma adds a rich oily quality that moistens the intestines and lubricates dryness, complementing He Shou Wu's astringent, consolidating nature.

When to use: Premature greying, dry brittle hair, and blood-deficient constipation. A common pairing in both medicinal formulas and health-food preparations.

Tu Si Zi
Tu Si Zi 2:1 (He Shou Wu : Tu Si Zi, e.g. 15g : 8g)

He Shou Wu and Tu Si Zi (Dodder seed) together tonify both Yin and Yang of the Kidneys. He Shou Wu primarily nourishes Kidney Yin, Essence, and Blood, while Tu Si Zi gently warms Kidney Yang and secures Essence. This balanced pairing follows the principle of 'seeking Yang within Yin' for more complete Kidney tonification.

When to use: Kidney deficiency manifesting as spermatorrhea, infertility, lower back weakness, loose teeth, and thinning hair. Both herbs appear together in Qi Bao Mei Ran Dan.

Key Formulas

These well-known formulas feature He Shou Wu in a prominent role

Qi Bao Mei Ran Dan 七宝美髯丹 King

The definitive formula showcasing processed He Shou Wu's signature action of nourishing Liver-Kidney Essence and Blood to darken the hair. He Shou Wu serves as the King herb at the heaviest dosage (both red and white varieties, 500g each in the original recipe), clearly dominating the formula. This is the formula most closely associated with He Shou Wu in clinical memory, demonstrating its core use for premature greying, hair loss, loose teeth, and Kidney deficiency infertility.

Comparable Ingredients

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

Shu Di Huang
He Shou Wu vs Shu Di Huang

Both Shu Di Huang (prepared Rehmannia) and processed He Shou Wu nourish the Liver and Kidneys and replenish Essence and Blood. However, Shu Di Huang is a heavier, more cloying tonic that directly fills Kidney Yin and is considered a 'first-line' Yin tonic for severe deficiency. He Shou Wu is lighter and less likely to cause digestive stagnation. Classical authors noted that Shu Di Huang is a 'peak' Yin tonic focused on deep Kidney Water, while He Shou Wu works more through the Liver Blood side and has additional benefits for the hair. Choose Shu Di Huang for severe Kidney Yin depletion with bone-steaming heat; choose He Shou Wu when the focus is on hair vitality, gradual tonification, or when the patient's digestion is too weak for Shu Di Huang.

Sang Shen
He Shou Wu vs Sang Shen

Both Sang Shen (Mulberry fruit) and processed He Shou Wu nourish the Liver and Kidneys and darken the hair. Sang Shen is cooler and sweeter, making it better suited for patients with more pronounced Yin deficiency heat signs. He Shou Wu is slightly warm and astringent, making it better at consolidating Essence and more appropriate when there is spermatorrhea or leakage of fluids alongside the deficiency. Sang Shen also moistens more strongly and is better for thirst and dry mouth.

Nu Zhen Zi
He Shou Wu vs Nu Zhen Zi

Both Nu Zhen Zi (Ligustrum fruit) and processed He Shou Wu tonify the Liver and Kidneys to address premature greying and dizziness. Nu Zhen Zi is cool in nature and better suited for patients with clear Yin deficiency heat, while He Shou Wu is slightly warm and better at nourishing Blood and consolidating Essence. Nu Zhen Zi is milder overall and is frequently combined with He Shou Wu (as in Shou Wu Yan Shou Dan) rather than used as a replacement.

Therapeutic Substitutes

Legitimate clinical replacements when He Shou Wu is unavailable, restricted, or contraindicated

Shu Di Huang

Shu Di Huang
Shu Di Huang 熟地黄
Prepared Rehmannia root

Covers: Covers Zhì Hé Shǒu Wū's (prepared Hé Shǒu Wū) role of nourishing Blood and tonifying the Liver and Kidney — addressing presentations such as blood deficiency pallor, dizziness, and Liver-Kidney insufficiency with sore lower back and knees. Chinese clinical substitution literature documents this swap with the note that Shú Dì Huáng is actually stronger at nourishing Blood in this capacity.

Does not cover: Does not replicate Zhì Hé Shǒu Wū's mild astringent action on Kidney essence (涩精气), and lacks the moistening-the-bowel effect specific to the raw form (Shēng Hé Shǒu Wū). Shú Dì Huáng is more cloying and harder to digest, making it less suitable for patients with weak digestion or dampness; Zhì Hé Shǒu Wū is generally considered less cloying. Shú Dì Huáng does not replicate the detoxifying or laxative actions of the raw herb.

Use when: When Zhì Hé Shǒu Wū is unavailable, or when its use is contraindicated due to concerns about herb-induced liver injury — particularly relevant given regulatory restrictions on Hé Shǒu Wū-containing products in multiple countries and China's own tightened prescribing controls. Most appropriate when the primary treatment goal is Blood and Liver-Kidney nourishment and the astringent-essence and bowel-moistening functions are not the main therapeutic target.

Identity & Adulterants

Related species and common adulterations to be aware of when sourcing He Shou Wu

The most important distinction is between He Shou Wu (赤首乌, red He Shou Wu, from Fallopia multiflora of the Polygonaceae family) and Bai Shou Wu (白首乌, white He Shou Wu, from Cynanchum auriculatum or Cynanchum bungei of the Asclepiadaceae family). These are completely different plants with different chemical profiles and actions. Bai Shou Wu is sometimes fraudulently sold as He Shou Wu or mixed in. Other documented counterfeits and adulterants include roots of Musa basjoo (banana family), Pteroxygonum giraldii, Polygonum ciliinerve, and Stephania cepharantha. These can be distinguished from authentic He Shou Wu by the absence of the characteristic "cloud brocade" (云锦花纹) vascular bundle pattern visible on cross-section. Quality variation between regions is also significant. He Shou Wu from different origins can have substantially different concentrations of active constituents such as stilbene glycosides and anthraquinones, affecting both efficacy and safety.

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

Toxicity Classification

Classical Chinese pharmacopoeia toxicity rating for He Shou Wu

Non-toxic

The Chinese Pharmacopoeia classifies He Shou Wu as non-toxic in the traditional sense, but modern pharmacovigilance has identified a significant risk of liver injury (hepatotoxicity). China's NMPA has issued formal safety bulletins regarding this risk. The liver injury caused by He Shou Wu is now understood to be primarily idiosyncratic (unpredictable, related to individual genetic susceptibility) rather than dose-dependent direct toxicity. Chinese researchers identified HLA-B*35:01 as a genetic susceptibility marker associated with He Shou Wu-induced liver injury. This means most people can use it without harm, but a small subset of genetically susceptible individuals may develop hepatitis even at standard doses. The potentially hepatotoxic components include anthraquinones (such as emodin) and possibly stilbene glycosides (such as 2,3,5,4'-tetrahydroxystilbene-2-O-glucoside), though the exact toxic constituents remain under active investigation. The anthraquinone content is higher in raw He Shou Wu than in the processed form. Classical texts noted this risk: the ancient instruction "制非九次，勿寝其毒" ("unless processed nine times, its toxicity is not eliminated") emphasized the importance of thorough processing. Processing with black bean juice (the standard method for making Zhi He Shou Wu) reduces but does not eliminate the hepatotoxic potential. Clinical symptoms of liver injury include fatigue, loss of appetite, nausea, dark urine, and jaundice. Most cases are mild to moderate and reversible upon discontinuation, but severe cases including liver failure and death have been reported.

Contraindications

Situations where He Shou Wu should not be used or requires extra caution

Avoid

Pre-existing liver disease or history of liver damage. He Shou Wu (both raw and processed forms) has been associated with drug-induced liver injury. Individuals with existing hepatic impairment are at significantly higher risk.

Avoid

History of previous liver injury from He Shou Wu or its preparations. Rechallenge after a prior episode of He Shou Wu-associated hepatotoxicity commonly causes recurrence, often with a shorter latency period and potentially more severe outcome.

Avoid

Concurrent use of other hepatotoxic medications. Using He Shou Wu alongside other drugs known to cause liver damage may increase the risk of hepatotoxicity.

Caution

Spleen deficiency with loose stools or diarrhea. Raw He Shou Wu has a laxative effect due to its anthraquinone content, and even the processed form retains some of this property. It should be avoided in those with chronic loose stools from Spleen weakness.

Caution

Excessive dampness or phlegm conditions. He Shou Wu is a rich, cloying tonic that can worsen dampness and impair digestion if used when there is significant phlegm-damp accumulation.

Caution

Excessive or prolonged unsupervised use. China's NMPA has warned that exceeding recommended dosages or taking He Shou Wu continuously over long periods significantly increases the risk of liver injury.

Caution

Use of raw (unprocessed) He Shou Wu as a tonic. The raw form (Sheng Shou Wu) has greater hepatotoxic potential than the processed form and should not be used for tonic purposes. Its use is limited to specific short-term indications such as constipation, malaria, or topical application for sores.

Classical Incompatibilities

Traditional Chinese pharmacological incompatibilities — herbs or substances to avoid combining with He Shou Wu

He Shou Wu does not appear on the classical Eighteen Incompatibilities (十八反) or Nineteen Mutual Fears (十九畏) lists. However, classical dietary prohibitions note that He Shou Wu should not be taken together with onion (葱), garlic (蒜), or radish/turnip (萝卜). The Song Dynasty text Ben Cao Yan Yi records that combining He Shou Wu with radish causes premature greying of hair, directly counteracting its intended benefit.

Special Populations

Important considerations for pregnancy, breastfeeding, and pediatric use

Pregnancy

He Shou Wu should be used with significant caution during pregnancy and is best avoided unless specifically prescribed by an experienced practitioner. Raw He Shou Wu contains anthraquinones (similar to those in Da Huang/rhubarb) which have laxative and potentially uterine-stimulating properties, making the raw form contraindicated in pregnancy. Additionally, the well-documented risk of hepatotoxicity is a serious concern during pregnancy, when liver function changes and drug metabolism is altered. Cases of pregnant women developing severe liver damage from He Shou Wu-containing preparations have been reported. The processed form (Zhi He Shou Wu) is sometimes included in traditional pregnancy-support formulas, but given the hepatotoxicity risk, modern guidance recommends caution.

Breastfeeding

Safety data on He Shou Wu during breastfeeding is extremely limited. Given the documented hepatotoxicity risk and the potential for active compounds (particularly anthraquinones) to transfer into breast milk, caution is strongly advised. Anthraquinone-containing herbs are generally avoided during breastfeeding because these compounds can pass into breast milk and may cause loose stools or gastrointestinal irritation in the infant. If a breastfeeding mother requires Blood-nourishing therapy, safer alternatives such as Shu Di Huang (prepared Rehmannia) or Dang Gui should be considered first.

Children

He Shou Wu is generally not recommended for children. Cases of liver injury in pediatric patients have been documented, including a case of a 5-year-old girl who developed jaundice after 4 months of taking Shou Wu Pian for hair loss. Children's livers are more vulnerable and their drug metabolism pathways are still developing. If used at all in older children for specific indications, the dose should be significantly reduced (typically one-third to one-half of adult dose) and liver function should be monitored. It should never be given to children as a general tonic or hair supplement.

Drug Interactions

If you are taking pharmaceutical medications, be aware of these potential interactions with He Shou Wu

Hepatotoxic medications: He Shou Wu should not be combined with other drugs known to cause liver damage, including acetaminophen (paracetamol), statins (e.g. atorvastatin, simvastatin), certain antibiotics (isoniazid, ketoconazole), and methotrexate. The combination may have additive hepatotoxic effects.

Anticoagulant and antiplatelet drugs: Anthraquinones in He Shou Wu may have mild blood-activating properties. Caution is warranted when combining with warfarin, heparin, or antiplatelet agents such as aspirin or clopidogrel, as effects on bleeding time are theoretically possible.

Laxatives: Raw He Shou Wu contains anthraquinone glycosides with laxative action similar to those in rhubarb (Da Huang). Combining with other stimulant laxatives may cause excessive purging, electrolyte imbalance, or abdominal cramping.

Drugs metabolized by cytochrome P450 enzymes: Preliminary research suggests that stilbene glycosides in He Shou Wu may affect CYP1A2 and UGT enzymes, potentially altering the metabolism of drugs processed through these pathways. Clinical significance is not yet fully established, but awareness is warranted.

Dietary Advice

Foods and dietary considerations when taking He Shou Wu

Avoid radish (turnip), onion (葱), and garlic while taking He Shou Wu. This is one of the most well-known classical food prohibitions in Chinese medicine, recorded in multiple texts. Radish in particular is said to counteract the tonic and hair-darkening effects of He Shou Wu. Avoid strong tea and cold, raw foods during a course of treatment. As He Shou Wu is a rich Blood-nourishing tonic, greasy and heavy foods should be moderated to avoid overburdening the Spleen and creating dampness.

Botanical Description

Physical characteristics and morphology of the He Shou Wu source plant

Fallopia multiflora (Thunb.) Haraldson (syn. Polygonum multiflorum Thunb.) is a perennial twining vine in the Polygonaceae (buckwheat) family. The stems are reddish-purple and can climb several meters by winding around other plants or supports. The leaves are ovate-cordate (egg-shaped with a heart-shaped base), with smooth margins and a slightly rough texture on both surfaces. The stipular sheaths are tubular and tend to break apart and fall off early.

In autumn, the plant produces small yellowish-white flowers arranged in large, branching panicle-like inflorescences. The three outer tepals enlarge and become fleshy as the fruit matures, enclosing the small achene. The medicinal part is the large, starchy tuberous root, which is irregularly shaped (spindle-form or lumpy) with a reddish-brown exterior marked by grooves, wrinkles, and lenticel scars. The plant thrives in hilly terrain, along roadsides, in rocky crevices, and among shrubs, typically at elevations below 1000 meters, preferring warm and humid conditions.

Sourcing & Harvesting

Where He Shou Wu is sourced, when it's harvested or collected, and how to assess quality

Harvesting season

Autumn and winter, when the above-ground stems and leaves have withered (typically November to December). Roots are harvested after a minimum of 3 years of growth.

Primary growing regions

He Shou Wu is widely distributed across central and southern China. Major producing regions include Henan, Hubei, Guizhou, Sichuan, Jiangsu, Guangxi, and Guangdong provinces. The recognized daodi (terroir) source is Deqing County in Guangdong Province, which was officially designated as the authentic producing region for He Shou Wu under Guangdong's Lingnan Medicinal Materials Protection Regulations (2015). Deqing He Shou Wu received national agricultural geographical indication protection in 2018. He Shou Wu is also counted among the "Eight Great Lingnan Medicines" of Guangdong. Other notable historical production areas include parts of Henan and Guizhou. The chemical composition and quality of He Shou Wu can vary significantly depending on the growing region.

Quality indicators

Good quality He Shou Wu root is heavy, firm, and starchy (powdery when broken). The exterior surface is reddish-brown to dark brown with irregular grooves and dense wrinkles. The cross-section is the most important quality marker: it should display a distinctive pattern called "cloud brocade markings" (云锦花纹), consisting of ring-like arrangements of abnormal vascular bundles visible in the outer cortex region, surrounding a larger central woody core. The cross-section color should be pale yellowish-brown to pale reddish-brown. For processed He Shou Wu (Zhi Shou Wu), the slices should be uniformly dark brown to black-brown throughout, indicating thorough processing with black bean juice. The texture should be hard but not woody, and the cloud brocade pattern should still be faintly visible. Avoid roots that are lightweight, hollow, overly fibrous, or show signs of insect damage. Excessively large tubers are sometimes sold as novelties but are not necessarily of better medicinal quality.

Classical Texts

Key passages from the classical Chinese medical texts that describe He Shou Wu and its therapeutic uses

Kai Bao Ben Cao (《开宝本草》, Song Dynasty, 973-974 AD)

"主瘰疬，消痈肿，疗头面风疮，疗五痔，止心痛，益血气。"

"Treats scrofula, disperses abscesses and swellings, heals wind sores on the head and face, treats the five types of hemorrhoids, stops heart pain, and benefits the Blood and Qi."

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

"此物气温味苦涩，苦补肾，温补肝，能收敛精气，所以能养血益肝，固精益肾，健筋骨，乌髭髪，为滋补良药，不寒不燥，功在地黄、天门冬诸药之上。"

"This substance is warm in nature, bitter and astringent in flavor. Its bitterness supplements the Kidneys, its warmth supplements the Liver, and its astringency can consolidate essence and Qi. Therefore it can nourish Blood and benefit the Liver, secure the essence and benefit the Kidneys, strengthen sinews and bones, and blacken the beard and hair. It is a superior tonic, neither cold nor drying, with efficacy surpassing that of Rehmannia and Asparagus root."

He Shou Wu Zhuan (《何首乌传》, Tang Dynasty)

"主治五痔，腰膝之病，冷气心痛，积年劳瘦痰癖，风虚败劣，长筋力，益精髓，壮气驻颜，黑发延年。"

"Treats the five types of hemorrhoids, diseases of the lower back and knees, cold-Qi heart pain, chronic wasting and phlegm accumulation, wind deficiency and deterioration. It strengthens the sinews, benefits the essence and marrow, fortifies Qi and preserves the complexion, blackens the hair, and extends life."

Historical Context

The history and evolution of He Shou Wu's use in Chinese medicine over the centuries

He Shou Wu has one of the most colorful origin stories in Chinese medicine. According to the He Shou Wu Zhuan (何首乌传), attributed to the Tang Dynasty writer Li Ao (李翱), a man named He Tian'er (何田儿) from Shunzhou (modern Guangxi) discovered the herb. The legend recounts that after taking it, his grey hair turned black and his vitality was restored. His grandson, named He Shou Wu (literally "Mr. He's black hair"), continued using the herb and reportedly lived to 160 years. The herb was thus named after this grandson. The opposing view, cited by some scholars, holds that "He Shou Wu" was the name of the discoverer's grandson and that the hair-blackening reputation was a later inference drawn from the name itself.

He Shou Wu was not recorded in the earliest materia medica texts such as the Shen Nong Ben Cao Jing or the Shang Han Lun. Its first official inclusion in a state-sponsored materia medica was in the Song Dynasty Kai Bao Ben Cao (开宝本草, 973-974 AD), where it was noted primarily for treating scrofula, sores, and hemorrhoids. It was Li Shizhen's Ben Cao Gang Mu (1578) that elevated He Shou Wu to fame as a premier tonic, writing that its power exceeded that of Rehmannia and Asparagus root. Li Shizhen also recorded that the Ming Emperor Shizong used He Shou Wu preparations with apparent benefit, after which "He Shou Wu formulas spread throughout the realm." A Song Dynasty anecdote in the Ben Cao Yan Yi noted that the statesman Kou Zhun (寇准) took He Shou Wu but unwisely ate it alongside radish, and his hair turned white prematurely, illustrating the classical dietary prohibition against combining He Shou Wu with turnip/radish.

In modern times, He Shou Wu has become one of the most scrutinized herbs in Chinese medicine due to reports of liver injury. In 2014, China's NMPA issued a formal drug safety bulletin regarding the hepatotoxicity risk of oral He Shou Wu products. The Chinese Pharmacopoeia subsequently reduced the recommended dosage of raw He Shou Wu from 6-12g to 3-6g, and several over-the-counter preparations containing He Shou Wu were reclassified as prescription-only in 2013.

Modern Research

4 published studies investigating the pharmacological effects or clinical outcomes of He Shou Wu

1

Systematic Review of Case Reports and Case Series on Liver Damage Associated with Polygonum multiflorum (2015)

Lei X, Chen J, Ren J, Li Y, Zhai J, Mu W, et al. Evidence-Based Complementary and Alternative Medicine, 2015, 2015: 459749.

This systematic review identified 450 cases of liver damage associated with He Shou Wu across 76 articles. The most common symptoms were jaundice, fatigue, loss of appetite, and dark urine, typically appearing about one month after starting use. Of the 450 patients, 441 recovered or improved after stopping the herb, but 7 deaths and 2 liver transplants were reported. Both raw and processed forms were implicated.

DOI
2

Review: Hepatotoxic Components and Mechanisms of Polygonum multiflorum (2020)

Zhang M, Lin L, Lin H, Qu C, Yan L, Ni J. Evidence-Based Complementary and Alternative Medicine, 2020, 2020: 6489648.

This review summarized current knowledge on which chemical components in He Shou Wu may cause liver damage. Anthraquinones (such as emodin), stilbene glycosides, and tannins were discussed as potential culprits, but the authors noted that the clinical dose of He Shou Wu is far below the dose shown to cause direct liver damage in healthy subjects, supporting the theory that liver injury is primarily idiosyncratic (related to individual susceptibility) rather than directly toxic.

PubMed
3

Review: Immune-Mediated Idiosyncratic Liver Injury from Polygonum multiflorum (2021)

Li C, Rao T, Chen X, Zou Z, Wei A, Tang J, et al. Acta Pharmacologica Sinica, 2021, 42: 27-35.

This review assessed evidence that He Shou Wu-induced liver injury is primarily an immune-mediated idiosyncratic reaction rather than direct toxicity. The paper examined both innate and adaptive immune mechanisms, noting that the genetic marker HLA-B*35:01 had been identified as a susceptibility factor. The findings suggest that only genetically predisposed individuals are at significant risk.

PubMed
4

Case Series: 25 Cases of Acute Hepatitis Following Ingestion of Polygonum multiflorum (2011)

Jung KA, Min HJ, Yoo SS, Kim HJ, Choi SN, Ha CY, et al. Gut and Liver, 2011, 5(4): 493-499.

This Korean hospital-based study documented 25 patients who developed toxic hepatitis after taking He Shou Wu products between 2007 and 2009. The median age was 48 years, and 72% were male. Clinical courses varied widely from asymptomatic enzyme elevation to death, highlighting the unpredictable nature of the liver injury. Most patients were using the herb for grey hair or hair loss.

PubMed

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.