Herb Tuber (块茎 kuài jīng / 块根 kuài gēn)

Tian Ma

Gastrodia tuber · 天麻

Gastrodia elata Blume · Rhizoma Gastrodiae

Also known as: Chì Jiàn (赤箭), Dìng Fēng Cǎo (定风草), Guǐ Dū Yóu (鬼督邮),

Tian Ma (Gastrodia tuber) plant

Images shown are for educational purposes only

Tian Ma (Gastrodia tuber) is one of the most valued herbs in Chinese medicine for dizziness, headaches, and conditions involving tremors or spasms. It works primarily on the Liver system, calming excess activity and internal Wind that causes symptoms like vertigo, head pressure, and involuntary movements. Its gentle, balanced nature makes it suitable for a wide range of people and it has a long history of use both as medicine and as a food ingredient in soups and stews.

Category Liver-calming and Wind-extinguishing herbs (平肝息风药) Wind-extinguishing and spasm-relieving herbs (息风止痉药)
Therapeutic focus Headache Relief Dizziness and Vertigo Neurological Health Blood Pressure Support

TCM Properties

Temperature

Neutral

Taste

Sweet (甘 gān)

Channels entered

Liver

Parts used

Tuber (块茎 kuài jīng / 块根 kuài gēn)

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What This Herb Does

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

Therapeutic focus

In practical terms, Tian Ma is primarily used to support these areas of health:

Headache Relief Dizziness and Vertigo Neurological Health Blood Pressure Support

TCM Actions

In TCM terminology, these are the specific therapeutic actions that Tian Ma performs to restore balance in the body:

Extinguishes Wind and Stops Spasms Calms the Liver and Subdues Yang Dispels Wind-Dampness and Unblocks the Collaterals Alleviates Pain

How these actions work

'Extinguishes Wind and relieves spasms' (息风止痉 xī fēng zhǐ jìng) means Tian Ma calms internal Wind stirring from the Liver. In TCM, when the Liver generates internal Wind, it can cause tremors, spasms, convulsions, and involuntary movements. Tian Ma is one of the most important herbs for addressing these symptoms, whether from high fever, childhood seizures, or chronic conditions. Its sweet taste and neutral temperature make it gentle enough to use regardless of whether the underlying pattern is Hot, Cold, Deficient, or Excess.

'Calms the Liver and subdues Yang' (平抑肝阳 píng yì gān yáng) means it settles excessive Liver Yang that has risen upward. When the Liver's Yang aspect becomes overactive (often due to underlying Yin Deficiency or emotional stress), it causes dizziness, headache, a feeling of pressure in the head, irritability, and sometimes tinnitus. Tian Ma is considered the essential herb (要药 yào yào) for treating dizziness from any cause related to the Liver. The Yuan Dynasty physician Luo Tianyi stated that for dizziness with internal Wind, nothing surpasses Tian Ma.

'Dispels Wind and unblocks the collaterals' (祛风通络 qū fēng tōng luò) means Tian Ma also addresses external Wind that has invaded the body's channels and collaterals, causing numbness, pain in the limbs, difficulty with movement, or joint stiffness. This action makes it useful for conditions like post-stroke weakness, limb numbness, and Wind-Damp painful obstruction (Bi syndrome).

'Alleviates pain' refers especially to headache. Tian Ma is a core herb for treating headaches of various types, particularly those associated with Liver dysfunction, whether from Liver Yang rising, Liver Wind, or Wind-Phlegm. It is classically paired with Chuān Xiōng (川芎) to enhance this pain-relieving action.

Patterns Addressed

In TCM, symptoms cluster into recognizable patterns of disharmony. Tian Ma is used to help correct these specific patterns.

Why Tian Ma addresses this pattern

When Liver Yang rises excessively, it ascends to disturb the head, causing dizziness, headache, and irritability. Tian Ma enters the Liver channel and has a specific ability to calm and subdue rising Liver Yang (平抑肝阳). Its sweet taste nourishes while its neutral temperature means it does not add Heat or Cold, making it the quintessential herb for this pattern. Classical texts describe it as the 'essential herb for dizziness' (治眩晕之要药). It gently anchors the Yang back downward without being overly cold or sedating.

A practitioner would look for one or more of these signs

Dizziness

Dizziness that worsens with stress or anger

Headaches

Headache with a distending or throbbing quality at the temples or top of the head

Tinnitus

Ringing in the ears

Irritability

Irritability and restlessness

Commonly Used For

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

Arises from: Liver Yang Rising

TCM Interpretation

In TCM, high blood pressure most commonly relates to an imbalance in the Liver system. When Liver Yang rises excessively (often rooted in Liver and Kidney Yin Deficiency), it pushes upward, creating symptoms like headache, dizziness, facial flushing, irritability, and a sensation of fullness in the head. Emotional stress, overwork, and constitutional Yin Deficiency are typical contributing factors. The condition is understood as 'upper excess with lower deficiency': too much activity in the upper body (the rising Yang) combined with insufficient nourishing resources below (depleted Yin).

Why Tian Ma Helps

Tian Ma calms and subdues the excessively rising Liver Yang that TCM identifies as the core mechanism behind most hypertension symptoms. By entering the Liver channel and exerting a settling, descending influence on Yang, it helps bring the body's activity back into balance. Its neutral temperature makes it safe for long-term use without aggravating underlying Yin Deficiency, unlike strongly cold herbs that might damage the Spleen. In the formula Tian Ma Gou Teng Yin, Tian Ma is the principal herb specifically chosen for its ability to calm Liver Wind and subdue Yang in hypertensive patients with headache, dizziness, and insomnia.

Also commonly used for

Epilepsy

Seizure disorders, both childhood and adult

Numbness In Hands And Feet

Limb numbness and tingling

Stroke

Post-stroke weakness and difficulty with movement

Tinnitus
Meniere's Disease

Inner ear vertigo with nausea

Muscle Spasm

Tremors and involuntary movements

Rheumatic Joint Pain

Wind-Damp painful obstruction of the joints

Herb Properties

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

Temperature

Neutral

Taste

Sweet (甘 gān)

Channels Entered

Liver

Parts Used

Tuber (块茎 kuài jīng / 块根 kuài gēn)

Dosage & Preparation

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

Standard dosage

3-10g

Maximum dosage

Up to 15g in decoction under practitioner supervision for severe conditions. Do not exceed 40g, as this is the documented toxic threshold.

Dosage notes

When used in decoction, the standard range is 3 to 10g. When ground into powder and taken directly (swallowed with water), the dose is reduced to 1 to 1.5g per dose. Lower doses (3 to 6g) are generally used for mild dizziness or as part of a multi-herb formula for gradual Liver-calming. Higher doses (6 to 10g) are used for more pronounced Liver Wind symptoms such as severe headache, dizziness, or spasms. Tian Ma's active components (especially gastrodin) are heat-sensitive and volatile, so prolonged boiling diminishes efficacy. When cooking Tian Ma in food (such as the popular Tian Ma stewed chicken), it should be added near the end of cooking rather than boiled for long periods. Single-herb use is generally discouraged, as classical authorities emphasize that Tian Ma requires companion herbs to show its full effect.

Preparation

Tian Ma's main active components, particularly gastrodin, are heat-sensitive and can be lost with prolonged boiling. When used in decoction, it is best added in the last 10 to 15 minutes of cooking (后下, hòu xià) or ground into fine powder and taken separately (研末冲服). Slicing thinly before decocting improves extraction. For the powder form, 1 to 1.5g is swallowed with the strained decoction or warm water.

Processing Methods

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

Processing method

The sliced Tian Ma is placed on moistened paper, then heated in a pan over gentle fire until the paper turns dark yellow. The herb slices are turned continuously until both sides reach an old-yellow colour.

How it changes properties

Roasting with paper (煨) makes the herb's nature slightly warmer and drier. It enhances the ability to strengthen the Spleen and dry Dampness, and reduces any slight tendency of the raw herb to generate dampness. The Ben Cao Gang Mu specifically recommends this method when treating Liver Wind with underlying deficiency.

When to use this form

Preferred when treating headache and dizziness in patients with underlying Spleen deficiency and Dampness, where a slightly warming and drying action is beneficial.

Common Herb Pairs

These ingredients are traditionally combined with Tian Ma for enhanced therapeutic effect

Gou Teng
Gou Teng Tian Ma 9g : Gou Teng 12g

Tian Ma and Gou Teng together create a powerful Liver-calming and Wind-extinguishing pair. Tian Ma subdues Liver Yang and calms internal Wind, while Gou Teng clears Liver Heat and also calms Wind. Together they are stronger than either alone at settling rising Yang and stopping dizziness and headache.

When to use: Liver Yang rising or Liver Wind with headache, dizziness, irritability, and high blood pressure. This is the core pair in Tian Ma Gou Teng Yin.

Chuan Xiong
Chuan Xiong Tian Ma 9g : Chuan Xiong 9–12g

Tian Ma calms Liver Wind and subdues Yang while Chuan Xiong invigorates Blood and directs Qi upward to the head, relieving pain. Together they address headache from both the Wind/Yang excess angle and the Blood stagnation angle, making them the classical pairing for headaches of virtually all types.

When to use: Headaches of various types, especially those with a Liver Wind or Blood stasis component. Also for migraine and tension-type headaches. This pair appears in the classical Tian Ma Wan.

Ban Xia
Ban Xia Tian Ma 9–15g : Ban Xia 9–15g

Tian Ma extinguishes internal Wind that carries Phlegm upward, while Ban Xia dries Dampness and resolves Phlegm directly. Together they tackle Wind-Phlegm dizziness from both directions: Tian Ma calms the Wind, Ban Xia eliminates the Phlegm. Classical texts state that for dizziness from Phlegm, these two herbs together are essential.

When to use: Wind-Phlegm pattern dizziness with heavy-headedness, nausea, chest stuffiness, and white greasy tongue coating. This is the core pair in Ban Xia Bai Zhu Tian Ma Tang.

Quan Xie
Quan Xie Tian Ma 9g : Quan Xie 3–6g

Both herbs extinguish Wind and relieve spasms, but through different mechanisms. Tian Ma is sweet and gentle, calming Liver Wind broadly. Quan Xie is acrid and powerfully penetrating, targeting convulsions and spasms in the channels and collaterals. Together they provide both gentle calming and powerful antispasmodic action.

When to use: Severe convulsions, childhood seizures, tetanus-like spasms, and tremors where strong antispasmodic action is needed.

Key Formulas

These well-known formulas feature Tian Ma in a prominent role

Tian Ma Gou Teng Yin 天麻鉤藤飲 King

This is the signature formula showcasing Tian Ma's Liver Yang-subduing and Wind-calming actions. Tian Ma serves as co-King alongside Gou Teng, directly targeting the Liver Yang rising and Liver Wind that cause headache, dizziness, and insomnia. The formula is the standard modern prescription for hypertension with Liver Yang symptoms, making it the most widely recognized clinical application of Tian Ma.

Banxia Baizhu Tianma Tang 半夏白術天麻湯 Deputy

This formula demonstrates Tian Ma's role in treating Wind-Phlegm dizziness. While Ban Xia and Bai Zhu address the Phlegm and Spleen Deficiency, Tian Ma calms the Wind that carries Phlegm upward to cloud the head. This formula, from Cheng Zhongling's Yi Xue Xin Wu, illustrates how Tian Ma complements Phlegm-resolving herbs when dizziness involves both Wind and Phlegm.

Comparable Ingredients

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

Gou Teng
Tian Ma vs Gou Teng

Both calm the Liver and extinguish Wind, and they are often used together. The key difference is that Gou Teng is cool in nature and also clears Liver Heat, making it better suited when there are Heat signs like red face, bitter taste, and irritability. Tian Ma is neutral and more moistening, making it a better choice when there is underlying Blood Deficiency or Yin Deficiency contributing to the Wind, or when the practitioner needs to avoid adding cold. Tian Ma is also stronger for pain relief and unblocking the collaterals.

Shi Jue Ming
Tian Ma vs Shi Jue Ming

Both subdue Liver Yang and treat dizziness and headache. Shi Jue Ming (Abalone shell) is a heavy mineral/shell substance that physically anchors Yang downward through its weight, and it also clears Liver Heat and improves vision. Tian Ma is a plant-based herb that calms Wind and alleviates pain more broadly. Shi Jue Ming is preferred when there is significant Heat with red eyes and visual disturbance, while Tian Ma is preferred when Wind symptoms (tremors, spasms, numbness) are prominent.

Ling Yang Jiao
Tian Ma vs Ling Yang Jiao

Both extinguish Liver Wind and relieve spasms, but Ling Yang Jiao (Antelope horn) is cold in nature and far more powerful for clearing intense Liver Heat and calming high fevers with convulsions. Tian Ma is neutral and milder, suitable for a broader range of patterns including Deficiency-related Wind. Ling Yang Jiao is reserved for acute, severe presentations with high fever and convulsions, while Tian Ma is the everyday herb for chronic dizziness, headache, and mild Wind symptoms.

Common Substitutes & Adulterants

Related species and common adulterations to be aware of when sourcing Tian Ma

Tian Ma is one of the more commonly adulterated Chinese herbs due to its high market value. Common fraudulent substitutes include: the root of Mirabilis jalapa (紫茉莉, Purple Mirabilis), roots of Dahlia species (大理菊), tubers of Cacalia (羽裂蟹甲草), potato tubers (马铃薯, Solanum tuberosum), tubers of Thladiantha (赤爬), and roots of Phytolacca acinosa (商陆). Of these, Phytolacca (商陆) is particularly dangerous because it is significantly toxic and can cause serious harm or death if mistakenly consumed as Tian Ma. Key identification features for authentic Tian Ma can be remembered by the rhyme: 'Tian Ma is oblong, flattened, slightly curved, with rows of dotted ring-lines in over ten circles; a parrot-beak stem base at the top, and a round navel-like scar at the bottom' (天麻长圆扁稍弯，点状环纹十余圈；头顶茎基鹦哥嘴，底部疤痕似脐圆). Additionally, Yu Feng Cao (御风草) is a classically noted look-alike that should not be confused with or used alongside Tian Ma.

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

Toxicity Classification

Classical Chinese pharmacopoeia toxicity rating for Tian Ma

Non-toxic

Tian Ma is classified as non-toxic in both classical texts and the Chinese Pharmacopoeia. The Ben Cao Gang Mu explicitly records it as having no toxicity. Modern toxicology studies show the LD50 of gastrodin (its main active component) is very high, exceeding 5,000 mg/kg orally in mice, indicating very low toxicity. Subacute toxicity studies show gastrodin and its aglycone have no effect on blood cell counts, liver enzymes, or organ histology. However, excessive doses of the crude herb (above approximately 40g) can cause adverse reactions including dizziness, chest tightness, nausea, and skin rashes, with a latency period of 1 to 6 hours. Long-term high-dose use has been noted to cause red skin eruptions (红丹), as recorded by Li Shizhen. At standard dosages (3 to 10g), Tian Ma has an excellent safety profile.

Contraindications

Situations where Tian Ma should not be used or requires extra caution

Caution

Blood deficiency without Wind (血虚无风): When headache or dizziness is caused by Blood deficiency rather than Liver Wind, Tian Ma is inappropriate. The classical text Ben Jing Feng Yuan states that Tian Ma, though not drying in nature, is still a Wind-treating herb and should not be used recklessly when there is Blood deficiency without Wind, Fire-type headache, dry mouth, or constipation.

Caution

Yin deficiency with Fire flaring (阴虚火旺): Tian Ma is slightly warming in nature and is not suitable for headache or dizziness caused by Yin deficiency with internal Heat, especially when the tongue is deep red with a peeled coating. In such cases, nourishing Kidney Yin is the priority.

Caution

Qi and Blood dual deficiency: Persons with significant Qi and Blood deficiency should not use Tian Ma as a standalone herb. The Ben Cao Xin Bian cautions that Tian Ma can dispel external pathogenic factors and expel internal Phlegm, but people with Qi and Blood deficiency should absolutely not use it lightly.

Avoid

Known allergy or hypersensitivity to Gastrodia elata or its components. Allergic skin rashes have been reported. Li Shizhen noted in Ben Cao Gang Mu that prolonged use of Tian Ma may cause red rashes to appear across the body.

Avoid

Excessive dosage (over 40g): Modern pharmacological evidence indicates the toxic dose threshold is approximately 40g, with a toxicity latency period of 1 to 6 hours. Overdose symptoms may include chest tightness, dizziness, nausea, and skin eruptions.

Caution

External Wind-Cold headache (common cold): Tian Ma treats internal Liver Wind, not headache from external pathogenic Wind-Cold invasion. Using it for common cold headaches is ineffective and considered a misapplication.

Special Populations

Important considerations for pregnancy, breastfeeding, and pediatric use

Pregnancy

Generally considered safe at standard doses based on available evidence. Animal reproductive toxicity studies using acetyl-gastrodin (a gastrodin derivative) showed no significant effects on placenta, fetal weight, sex, external features, organ development, or skeletal formation in mice or rats when administered during organogenesis (days 6 to 15 of gestation) at doses far exceeding typical human clinical doses. However, as a herb that treats Liver Wind and moves within the Liver channel, caution is still warranted during pregnancy, especially in the first trimester. Pregnant women should only use Tian Ma under the guidance of a qualified practitioner. Avoid use in cases of dizziness or headache caused by Blood deficiency rather than Liver Wind, as the herb would be inappropriate for the underlying condition.

Breastfeeding

No specific safety data exists for Tian Ma use during breastfeeding. The main active component, gastrodin, has low toxicity in general and no known adverse effects on lactation have been documented. However, given the lack of specific studies on transfer through breast milk and effects on nursing infants, caution is advised. Use during breastfeeding should be limited to situations where clearly indicated and supervised by a qualified practitioner. Standard dosages are unlikely to pose significant risk, but prolonged or high-dose use should be avoided.

Children

Tian Ma is used in classical paediatric formulas for childhood convulsions (小儿惊风) and epilepsy, and is considered appropriate for children when properly dosed and prescribed by a qualified practitioner. Dosage should be reduced proportionally based on the child's age and weight, typically one-third to one-half of the adult dose. Due to its mild sedative properties on the central nervous system, prolonged or high-dose use in infants and young children is not recommended. As with all herbs given to children, it should be combined with other appropriate herbs rather than used alone.

Drug Interactions

If you are taking pharmaceutical medications, be aware of these potential interactions with Tian Ma

Antihypertensive medications: Tian Ma and its active component gastrodin have demonstrated blood pressure-lowering effects through inhibition of the renin-angiotensin-aldosterone system (RAAS) and calcium channel antagonism. Concurrent use with antihypertensive drugs (especially calcium channel blockers, ACE inhibitors, or ARBs) may have additive hypotensive effects. Blood pressure should be monitored if combining these.

Sedatives and CNS depressants: Tian Ma has documented sedative and central nervous system depressant activity. It can prolong barbiturate-induced sleep time in animal models. Concurrent use with benzodiazepines, barbiturates, anticonvulsants, or other sedative medications may enhance sedation. Caution and dose adjustment may be needed.

Anticoagulant and antiplatelet drugs: Some pharmacological evidence suggests gastrodin has antiplatelet aggregation activity. Caution is advised when using Tian Ma alongside warfarin, heparin, aspirin, or clopidogrel, as there may be an additive effect on bleeding risk, though strong clinical evidence is currently lacking.

Dietary Advice

Foods and dietary considerations when taking Tian Ma

Tian Ma is a relatively mild herb with few strong dietary restrictions. However, as it is used primarily for Liver Wind conditions, it pairs well with a calming, nourishing diet: favour foods that support the Liver and nourish Blood such as dark leafy greens, goji berries, and black sesame. Avoid excessive alcohol, which can aggravate Liver Yang rising and counteract Tian Ma's calming effects. Spicy, greasy, or overly stimulating foods should be moderated during treatment, as they can generate internal Heat or Phlegm. When cooking Tian Ma as a food ingredient (as in stewed chicken or soups), avoid prolonged high-heat cooking to preserve its active compounds.

Botanical Description

Physical characteristics and morphology of the Tian Ma source plant

Gastrodia elata Blume is a remarkable perennial herbaceous plant in the orchid family (Orchidaceae) that is entirely unlike a typical orchid. The plant stands 30 to 100 cm tall (occasionally up to 2 metres), with an upright stem that is orange-yellow, brownish, or blue-green in colour. It has no green leaves and cannot photosynthesize, lacking chlorophyll entirely. Instead, Tian Ma is a mycoheterotrophic plant that depends on a symbiotic relationship with the honey fungus (Armillaria mellea) for all its nutrition. The fungal filaments penetrate the outer layer of the tuber, where the plant's enzymes digest them to extract nutrients.

The medicinal part is the underground tuber (rhizome), which is fleshy, elliptical to dumbbell-shaped, 8 to 12 cm long and 3 to 7 cm in diameter. The stem bears a terminal raceme 5 to 30 cm long with 30 to 50 small flowers, and the capsule fruit is obovate-elliptical. Flowering and fruiting occur from May to July. The plant grows naturally in shaded, moist forests with thick humus layers at elevations of 400 to 3,200 metres, preferring cool, humid conditions. Growth stops when soil temperature exceeds 30°C.

Sourcing & Harvesting

Where Tian Ma is sourced, when it's harvested or collected, and how to assess quality

Harvesting season

Winter through early spring (from after the Start of Winter, around November, through to the Qingming festival in early April). 'Winter Tian Ma' (冬麻), harvested before the flower stalk emerges, is considered superior in quality because the tuber retains maximum nutrient accumulation. 'Spring Tian Ma' (春麻), harvested after the stalk has begun to grow, is considered inferior.

Primary growing regions

The premier producing regions (道地药材, dào dì yào cái) for Tian Ma are in southwestern China. Yunnan Province, especially the Zhaotong area (particularly Yiliang and Zhenxiong counties), is widely regarded as the top source, producing the prized 'Yun Tian Ma' (云天麻), known for large, plump tubers with high gastrodin content. Zhaotong is specifically recognized as the core producing area for the highest-quality black-skinned variety (乌天麻, Wū Tiān Má). Guizhou Province is another major source, with Dafang County in Bijie being especially famous and designated as the 'Hometown of Tian Ma in China.' Sichuan Province (Guangyuan, Leshan, Yibin areas) and Shaanxi Province (Hanzhong, Ankang, Shangluo) are also significant historical and modern production regions. Additional cultivated sources include Hubei (Shennongjia, Enshi, Yingshan, Luotian), Anhui (Jinzhai, Yuexi), and Henan.

Quality indicators

Good quality Tian Ma tubers are large, plump, and heavy for their size, with a firm, solid texture. The surface should be yellowish-white to light yellowish-brown with clearly visible horizontal ring patterns (formed by dormant bud arrangements) and a characteristic parrot-beak shaped bud (鹦哥嘴) at one end and a round navel-shaped scar (凹肚脐) at the other. The cross-section should be relatively flat, yellowish-white to pale brown, translucent and horn-like (角质样) in appearance, indicating proper processing. The aroma should be faint, and the taste mildly sweet. 'Winter Tian Ma' (冬麻) is preferred over 'Spring Tian Ma' as it is heavier and more nutrient-dense. Avoid specimens that are hollow, lightweight, pointed and thin, dark in colour, or fibrous on the cross-section. Per the Chinese Pharmacopoeia (2020 edition), the combined content of gastrodin and p-hydroxybenzyl alcohol must be no less than 0.25%.

Classical Texts

Key passages from the classical Chinese medical texts that describe Tian Ma and its therapeutic uses

Shen Nong Ben Cao Jing (《神农本草经》)

Original: 赤箭，味辛温。主杀鬼精物、蛊毒恶气，久服益气力，长阴肥健，轻身增年。

Translation: Chi Jian (Red Arrow / Tian Ma): acrid and warm in flavour. It mainly kills ghost-essences and Gu toxins and evil Qi. Taken long-term, it benefits Qi and strength, promotes Yin growth and robust health, lightens the body and extends one's years.

Ben Cao Gang Mu (《本草纲目》, Li Shizhen)

Original: 天麻乃肝经气分之药。《素问》云：诸风掉眩，皆属于木。故天麻入厥阴之经而治诸病。按罗天益云：眼黑头旋，风虚内作，非天麻不能治。天麻乃定风草，故为治风之神药。

Translation: Tian Ma is a herb for the Qi aspect of the Liver channel. The Su Wen says: 'All Wind with tremor and dizziness belongs to Wood.' Therefore Tian Ma enters the Jue Yin (Liver) channel and treats all such diseases. As Luo Tianyi said: 'When the eyes go dark and the head spins, and internal Wind arises from deficiency, nothing but Tian Ma can treat it.' Tian Ma is the Calm-Wind Herb, and therefore is the divine medicine for treating Wind.

Ben Cao Hui Yan (《本草汇言》)

Original: 主头风，头痛，头晕虚旋，癫痫强痉，四肢挛急，语言不顺，一切中风，风痰。

Translation: It mainly treats head-Wind, headache, dizziness with a sensation of spinning, epilepsy and severe spasms, spasm and contracture of the four limbs, slurred speech, all types of Wind-stroke, and Wind-Phlegm.

Ben Jing Feng Yuan (《本经逢原》)

Original: 天麻性虽不燥，毕竟风剂，若血虚无风，火炎头痛、口干便闭者，不可妄用。

Translation: Although Tian Ma's nature is not drying, it is ultimately a Wind-treating agent. If there is Blood deficiency without Wind, or headache from flaring Fire with dry mouth and constipation, it must not be used recklessly.

Historical Context

The history and evolution of Tian Ma's use in Chinese medicine over the centuries

Tian Ma has one of the more colourful histories in Chinese medicine. It first appeared in the Shen Nong Ben Cao Jing (compiled around the Han dynasty) under the name Chi Jian (赤箭, 'Red Arrow'), referring to the plant's distinctive upright reddish stem that rises from the ground like an arrow shaft. Later, the Kai Bao Ben Cao of the Song dynasty (973 CE) introduced the name 'Tian Ma' (天麻) as a separate entry, leading to centuries of scholarly debate about whether 'Chi Jian' and 'Tian Ma' were one plant or two. Li Shizhen definitively resolved this in the Ben Cao Gang Mu, confirming they are the same plant: Chi Jian is the above-ground stem, Tian Ma is the underground tuber.

The name 'Tian Ma' (literally 'Heavenly Hemp') reflects the ancient belief that this strange plant, which has no leaves and seems to appear from nowhere, must be a gift from heaven. Its numerous aliases tell the story of how people perceived it: 'Calm Wind Herb' (定风草, Dìng Fēng Cǎo) describes its clinical function; 'Lone Swayer' (独摇芝) describes the curious observation that it seems to sway without wind; 'Ghost Courier' (鬼督邮) reflects Miao ethnic folklore. Before the Song dynasty, physicians prized Tian Ma mainly as a tonic for boosting vitality. From the Song dynasty onward, it became central to treating Wind diseases. The Jin-Yuan medical reformers, particularly Luo Tianyi (a student of Li Dongyuan), solidified its identity as the premier herb for internal Liver Wind, declaring it indispensable for dizziness and vertigo caused by internal deficiency Wind. In Qing dynasty court records, Empress Dowager Cixi used Tian Ma-based preparations topically for facial Wind conditions, and Emperor Guangxu took Tian Ma decoctions for headache and dizziness.

Modern Research

4 published studies investigating the pharmacological effects or clinical outcomes of Tian Ma

1

Meta-analysis: Effectiveness of Gastrodin for Migraine (2022)

Huang D, et al. Frontiers in Neurology, 2022, Vol 13, 939401

A systematic review and meta-analysis of 16 randomized controlled trials involving 1,332 patients evaluated the efficacy and safety of gastrodin (the main active compound of Tian Ma) for treating migraine. The analysis found that gastrodin was effective and safe for migraine treatment, with improvements in headache frequency, duration, and pain intensity compared to controls.

2

Systematic Review and Meta-analysis: Gastrodin Injection for Hypertension (2020)

Duan L, et al. Medicine, 2020, Vol 99(29), e21151

This systematic review evaluated the effects of gastrodin injection combined with conventional antihypertensive therapy on blood pressure in hypertensive patients. The findings indicated that adding gastrodin injection to standard treatment had positive effects on lowering blood pressure, possibly through mechanisms including inhibition of the renin-angiotensin-aldosterone system (RAAS) and prevention of calcium influx, leading to vasodilation.

PubMed
3

Narrative Review: Pharmacological Effects of Gastrodin (2023)

Xiao G, et al. Naunyn-Schmiedeberg's Archives of Pharmacology, 2023

A comprehensive review summarizing the pharmacological activities of gastrodin, the main bioactive component of Tian Ma. The review found prominent neuroprotective effects including improvements in epilepsy, Alzheimer's disease, Parkinson's disease, emotional disorders, cerebral ischemia-reperfusion injury, cognitive impairment, and neuropathic pain. Gastrodin also showed cardiovascular benefits including improvements in myocardial hypertrophy and hypertension.

PubMed
4

Comprehensive Review: Gastrodin Pharmacological Review (2024)

Huang Y, et al. Journal of Ethnopharmacology, 2024

A thorough review covering the extraction, synthesis, pharmacological effects, and derivatives of gastrodin. Found that gastrodin has significant anti-inflammatory, antioxidant, neuroprotective, vascular protective, blood sugar lowering, lipid-regulating, analgesic, anticancer, and antiviral effects. Mechanisms involve Nrf2, NF-kB, PI3K/AKT, and AMPK signaling pathways. The review concluded that gastrodin shows good efficacy in neurological, cardiovascular, endocrine, and liver diseases.

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.