Herb Fruit (果 guǒ / 果实 guǒ shí)

Zang Qing Guo

Immature Terminalia fruit · 藏青果

Terminalia chebula Retz. · Chebulae Fructus Immaturus

Also known as: Xi Qing Guo (西青果), Xi Zang Qing Guo (西藏青果)

Zang Qing Guo (Immature Terminalia fruit) plant

Images shown are for educational purposes only

Zang Qing Guo is the immature fruit of the chebula tree, widely used in Chinese medicine to soothe sore throats and hoarseness. It gently clears heat and generates fluids, making it a popular remedy for chronic pharyngitis and laryngitis. It is the key ingredient in the well-known Zang Qing Guo throat lozenges.

Category Heat-clearing herbs Herbs that clear Heat and resolve Toxicity (清热解毒药)
Therapeutic focus Throat Health Throat and Voice Care Digestive Health Immune Support

TCM Properties

Temperature

Cool

Taste

Bitter (苦 kǔ), Sour (酸 suān), Astringent (涩 sè)

Channels entered

Lungs, Stomach, Large Intestine

Parts used

Fruit (果 guǒ / 果实 guǒ shí)

Available in our store
View in Store
From $57.00

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 Zang Qing Guo does in the body, explained in both everyday and TCM terms

Therapeutic focus

In practical terms, Zang Qing Guo is primarily used to support these areas of health:

Throat Health Throat and Voice Care Digestive Health Immune Support

TCM Actions

In TCM terminology, these are the specific therapeutic actions that Zang Qing Guo performs to restore balance in the body:

Clears Heat and Generates Fluids Benefits the Throat and Restores the Voice Resolves Toxicity Astringes the Intestines and Stops Diarrhea

How these actions work

'Clears Heat and generates fluids' means this herb cools mild heat conditions, particularly in the Lungs and Stomach, while nourishing the body's fluids. This makes it useful when there is a dry, sore throat with a sensation of heat, especially the kind that comes from Yin Deficiency rather than a strong acute infection. The bitter and sour tastes work together to generate saliva and relieve dryness.

'Benefits the throat and opens the voice' refers to this herb's signature use: soothing inflamed, swollen, or dry throat tissue and relieving hoarseness. Its cool, astringent nature gently contracts and firms the irritated mucous membranes of the throat while clearing local heat. This is why it is the primary ingredient in throat lozenges for chronic pharyngitis, laryngitis, and tonsillitis.

'Resolves toxins' indicates a mild detoxifying action. Classically, this herb was valued for treating Yin-Deficiency type diphtheria (a serious throat infection now rare), where it could both clear the toxic heat and nourish depleted Yin. It is also traditionally noted as an antidote to aconite (Wu Tou) poisoning.

'Astringes the intestines' refers to its ability to firm up loose stools. The astringent taste helps bind and tighten the intestinal lining, which is why it has been used for bacterial dysentery and acute enteritis, particularly when there is heat and dampness in the Large Intestine.

Patterns Addressed

In TCM, symptoms cluster into recognizable patterns of disharmony. Zang Qing Guo is used to help correct these specific patterns.

Why Zang Qing Guo addresses this pattern

In Lung Yin Deficiency, the Lungs lack sufficient moisture and cooling fluids, leading to dry, irritated throat tissue and hoarseness. Zang Qing Guo's cool nature and sour-bitter-astringent taste profile directly addresses this: its coolness clears residual Deficiency Heat in the Lung channel, its sour taste generates fluids to moisten the dry throat, and its astringent quality firms the weakened throat lining. This makes it particularly suited for the chronic sore throat and voice changes that characterize this pattern, rather than the acute, severely inflamed throat of excess Heat patterns.

A practitioner would look for one or more of these signs

Sore Throat

Chronic dry, scratchy sore throat

Hoarseness

Voice hoarseness or loss of voice

Dry Throat

Persistent throat dryness

Dry Cough

Dry cough with little phlegm

Commonly Used For

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

Arises from: Lung Yin Deficiency Stomach Yin Deficiency

TCM Interpretation

In TCM, chronic pharyngitis is understood primarily as a condition of Yin Deficiency affecting the Lung and Stomach. When the body's cooling, moistening Yin fluids become depleted (from overwork, prolonged illness, excessive talking, or constitutional weakness), the throat loses its natural lubrication. This allows mild Deficiency Heat to rise and linger in the throat, causing the persistent dryness, irritation, and scratchy discomfort characteristic of chronic pharyngitis. Unlike acute sore throat from external Wind-Heat invasion, this is a slow-burning condition rooted in internal dryness.

Why Zang Qing Guo Helps

Zang Qing Guo is ideally suited for chronic pharyngitis because its mechanism precisely matches the pattern. Its cool nature gently clears the Deficiency Heat that irritates the throat without being so cold as to damage the already weakened Yin. Its sour taste stimulates fluid production to remoisten the dry throat tissue. Its astringent quality firms and soothes the irritated mucous membranes, providing the gentle, sustained relief that chronic conditions require. This is why it is the sole active ingredient in the widely used Zang Qing Guo throat lozenge, which modern pharmacological research has shown to have anti-inflammatory, antibacterial, and analgesic properties.

Also commonly used for

Chronic Laryngitis

Used for persistent hoarseness and voice changes

Chronic Tonsillitis

For recurrent tonsillitis with dry, sore throat

Hoarseness

Voice hoarseness from overuse or chronic inflammation

Sore Throat

Particularly for the Yin-Deficiency type with dryness rather than acute severe swelling

Acute Enteritis

Acute intestinal inflammation with diarrhea

Pneumonia

Used in combination formulas from the Gao Yuan Zhong Cao Yao Zhi Liao Shou Ce

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), Sour (酸 suān), Astringent (涩 sè)

Channels Entered

Lungs Stomach Large Intestine

Parts Used

Fruit (果 guǒ / 果实 guǒ shí)

Dosage & Preparation

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

Standard dosage

1.5–3g

Maximum dosage

Up to 9g in decoction for severe throat conditions, under practitioner guidance. Standard Pharmacopoeia dosage is 1.5–3g.

Dosage notes

The Chinese Pharmacopoeia lists the standard dosage as 1.5–3g in decoction. Some clinical references cite a broader range of 3–9g for general decoction use. For mild chronic pharyngitis or hoarseness, a simple method is to steep 2–3 whole fruits in hot water and drink as a tea, allowing the astringent properties to work directly on the throat. For bacterial dysentery, a concentrated decoction is traditionally prepared: 100g of dried herb is decocted in 300 mL water on low heat for 3 hours, then strained to yield approximately 100 mL, with adult doses of 15–20 mL taken 3–4 times daily. This herb is primarily used for Yin-deficiency type throat conditions and should not be used indiscriminately for all sore throats.

Preparation

No special decoction handling is required. The fruits are simply decocted in water along with other herbs. For throat conditions, the fruits may alternatively be steeped directly in boiling water and sipped slowly as a tea, or sucked on individually to release the juice. When used in concentrated decoctions for dysentery, a prolonged decoction time (up to 3 hours on low heat) is traditionally recommended to fully extract the active tannin compounds.

Common Herb Pairs

These ingredients are traditionally combined with Zang Qing Guo for enhanced therapeutic effect

Bo He
Bo He Zang Qing Guo 6g : Bo He 3-6g

Zang Qing Guo clears Lung heat and generates throat-moistening fluids, while Bo He (mint) disperses Wind-Heat from the exterior and opens the throat with its light, aromatic, ascending nature. Together they address both the deeper Yin-Deficiency dryness and the superficial inflammation of the throat.

When to use: Sore throat with both dryness and inflammatory swelling, particularly in early-stage pharyngitis or tonsillitis where external Wind-Heat has complicated underlying throat dryness.

Chuan Bei Mu
Chuan Bei Mu Zang Qing Guo 6g : Chuan Bei Mu 6g

Zang Qing Guo clears throat heat and generates fluids from the surface, while Chuan Bei Mu clears Lung heat, moistens the Lungs, and transforms phlegm. Together they provide comprehensive relief for Lung Yin Deficiency with both throat and respiratory symptoms.

When to use: Chronic pharyngitis or laryngitis accompanied by dry cough, scanty sticky phlegm, and hoarseness, as seen in Lung Yin Deficiency patterns.

Gan Cao
Gan Cao Zang Qing Guo 6g : Gan Cao 3g

Zang Qing Guo provides cooling, astringent, fluid-generating action on the throat, while Gan Cao (licorice) soothes the throat with its sweet, moistening nature, harmonizes the formula, and adds mild detoxifying support. Together they form a gentle, sustained throat-soothing combination.

When to use: Chronic sore throat with dryness and mild inflammation, as a simple daily remedy or base pair in more complex throat formulas.

Mai Dong
Mai Dong Zang Qing Guo 6g : Mai Dong 10g

Both herbs nourish Yin and generate fluids, but through complementary mechanisms: Zang Qing Guo cools and astringes the throat locally while Mai Dong deeply nourishes Lung and Stomach Yin from within. Together they provide both immediate local throat relief and systemic Yin replenishment.

When to use: Chronic dry throat with significant Yin Deficiency signs such as dry mouth, thirst, and a red tongue with little coating.

Comparable Ingredients

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

He Zi
Zang Qing Guo vs He Zi

He Zi (诃子) is the MATURE fruit of the same plant (Terminalia chebula), while Zang Qing Guo is its IMMATURE fruit. He Zi is stronger at astringing the intestines and Lungs (used for chronic diarrhea, chronic cough, and rectal prolapse), while Zang Qing Guo is better at clearing throat heat and generating fluids. Choose He Zi for lower body astringent actions (chronic diarrhea, prolapse) and Zang Qing Guo for upper body throat conditions (pharyngitis, laryngitis, hoarseness). When substituting Zang Qing Guo for He Zi in intestinal conditions, a larger dose is needed.

Pang Da Hai
Zang Qing Guo vs Pang Da Hai

Both herbs benefit the throat and are used for hoarseness and sore throat. Pang Da Hai is cold and slippery, better at clearing Lung Heat and moistening the intestines (it also loosens the bowels), making it more suited for acute voice loss from Lung Heat. Zang Qing Guo is astringent and cool rather than slippery and cold, making it better for chronic throat dryness with Yin Deficiency and unsuitable for those with loose stools. Choose Pang Da Hai for acute heat with constipation; choose Zang Qing Guo for chronic dryness or when diarrhea is present.

Qing Guo
Zang Qing Guo vs Qing Guo

Despite similar names, Qing Guo (青果, Chinese olive, Canarium album) and Zang Qing Guo (藏青果) come from completely different plants. Qing Guo is sweet, sour, and neutral, primarily used for clearing Lung and Stomach heat, generating fluids, and resolving toxins for sore throat. It is milder and more moistening. Zang Qing Guo has a more pronounced astringent quality and is specifically indicated for Yin-Deficiency type throat conditions. These two herbs should never be confused or substituted for each other.

Common Substitutes & Adulterants

Related species and common adulterations to be aware of when sourcing Zang Qing Guo

Zang Qing Guo (Xi Qing Guo, the immature fruit of Terminalia chebula) is frequently confused with Qing Guo (青果, the mature fruit of Canarium album, the Chinese olive, from the Burseraceae family). Despite having similar names, these are entirely different herbs with distinct properties and indications. Qing Guo (olive fruit) is sweet and astringent, while Zang Qing Guo is bitter and astringent. They can be distinguished by appearance: Qing Guo is larger, more elongated, and greenish, while Zang Qing Guo is smaller, flattened, and blackish-brown with prominent wrinkles. Zang Qing Guo may also be confused with its parent herb He Zi (诃子), which is the mature fruit of the same plant. He Zi is larger (3–4 cm), more rounded, with a fully developed hard seed kernel, while Zang Qing Guo is smaller (1.5–3 cm), flatter, and has an undeveloped, indistinct kernel. Their clinical actions differ significantly: He Zi focuses on astringency to stop diarrhea and cough, while Zang Qing Guo emphasizes clearing Heat and benefiting the throat.

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

Toxicity Classification

Classical Chinese pharmacopoeia toxicity rating for Zang Qing Guo

Non-toxic

Zang Qing Guo is classified as non-toxic in the Chinese Pharmacopoeia and has no specific toxic components of concern at standard therapeutic doses. The primary active constituents are tannins (20–40% of the fruit by weight), including chebulinic acid, chebulagic acid, gallic acid, and ellagic acid. While tannins are not toxic in the usual sense, excessive intake could cause gastrointestinal irritation or constipation due to the strongly astringent quality. No specific toxic reactions have been documented at recommended dosages.

Contraindications

Situations where Zang Qing Guo should not be used or requires extra caution

Caution

Wind-Fire pattern sore throat (风火喉痛): This herb is for Yin-deficiency type throat conditions only. Using it for acute, excess-Heat throat inflammation (with high fever, severe redness and swelling) can worsen the condition due to its astringent nature, which may trap pathogenic factors.

Caution

Interior Cold pattern (中寒者): The herb is cool in nature and astringent in flavor. Those with Spleen-Stomach Yang deficiency or interior Cold should not use it, as it may further damage digestive Yang and worsen cold-type symptoms such as loose stools with undigested food, cold abdomen, and poor appetite.

Caution

Early-stage dysentery or diarrhea with active pathogenic factors: Because the herb has a strongly astringent quality, it should not be used at the onset of dysentery or diarrhea when the pathogen has not yet been cleared. Premature use of astringent herbs can trap the pathogen inside the body, prolonging or worsening the illness.

Avoid

Known allergy to Terminalia chebula or related Combretaceae family plants: Individuals with hypersensitivity should avoid use entirely.

Special Populations

Important considerations for pregnancy, breastfeeding, and pediatric use

Pregnancy

No specific pregnancy safety data is available for Zang Qing Guo. Its astringent and cool nature does not suggest obvious uterine-stimulating properties. However, as with most herbs during pregnancy, it should be used only when clearly indicated and under the guidance of a qualified practitioner. The high tannin content may interfere with nutrient absorption if used long-term.

Breastfeeding

No specific safety data is available regarding Zang Qing Guo during breastfeeding. The high tannin content is the primary consideration, as tannins could theoretically pass into breast milk and affect the infant's digestion. Use during breastfeeding should be guided by a qualified practitioner and limited to short-term, clinically indicated applications.

Children

Zang Qing Guo may be used in children, particularly for throat conditions. The prepared granule form (藏青果颗粒) is commonly used in pediatric practice. The classical formula source for bacterial dysentery provides age-graded dosing: children aged 10–15 may take 10–15 mL of the decoction, and children aged 5–10 may take 5–10 mL, administered 3–4 times daily. Children must use this herb under adult supervision. As with all herbs in children, dosage should be reduced proportionally based on age and body weight, and duration of use should be kept short.

Drug Interactions

If you are taking pharmaceutical medications, be aware of these potential interactions with Zang Qing Guo

No well-documented specific drug interactions have been established for Zang Qing Guo in clinical literature. However, due to its very high tannin content (20–40%), general tannin-drug interaction principles should be observed:

  • Iron supplements and iron-containing medications: Tannins form insoluble complexes with iron, significantly reducing iron absorption. Take at least 2 hours apart.
  • Alkaloid-based medications: Tannins can precipitate alkaloids, potentially reducing the efficacy of medications such as atropine, codeine, and ephedrine. Avoid concurrent use.
  • Oral medications in general: The high tannin content may interfere with the absorption of various oral drugs by binding to their active compounds. As a precaution, take Zang Qing Guo at least 1–2 hours apart from other medications.
  • Anticoagulants: Some Terminalia chebula compounds have been shown to affect platelet function in preclinical studies. Patients on anticoagulant or antiplatelet therapy should exercise caution.

Dietary Advice

Foods and dietary considerations when taking Zang Qing Guo

Because Zang Qing Guo is cool in nature and used primarily for Heat-related throat conditions, avoid excessively spicy, fried, or greasy foods while taking it, as these can generate further Heat and counteract the herb's cooling effect. Avoid alcohol for the same reason. When using the herb for dysentery or intestinal conditions, favor bland, easily digestible foods such as congee and cooked vegetables to support intestinal recovery. Avoid cold, raw foods if there is any underlying Spleen weakness.

Botanical Description

Physical characteristics and morphology of the Zang Qing Guo source plant

Zang Qing Guo (藏青果) is the dried immature fruit of Terminalia chebula Retz., a large deciduous tree in the Combretaceae (Indian almond) family. The tree grows up to 20–30 metres tall with a trunk up to 1 metre in diameter, spreading branches, and a broad, rounded crown. The bark is dark brown with longitudinal fissures. Leaves are alternate to nearly opposite, oval to elliptic, 7–16 cm long and 3–8 cm wide, leathery in texture, with two distinctive glands at the top of the petiole. Young leaves and branches are covered in soft, reddish-brown hairs.

The flowers are small, dull yellowish-white, borne in terminal spikes or short panicles, and have a notably strong and unpleasant odour. Flowers appear from May to June, with fruit developing from July to December. The mature fruit is a drupe, ellipsoid to ovoid, 2.5–4.5 cm long with five longitudinal ridges, green when unripe and yellowish-brown to blackish when ripe. The medicinal product (Zang Qing Guo) is specifically the immature fruit, harvested before the seed kernel has fully developed. It is flattened, oblong-oval in shape, somewhat resembling an olive, 1.5–3 cm long and 0.5–1.2 cm wide, with a blackish-brown surface showing prominent longitudinal wrinkles.

Sourcing & Harvesting

Where Zang Qing Guo is sourced, when it's harvested or collected, and how to assess quality

Harvesting season

September to October, when the fruits are still immature and the seed kernel has not fully developed. Fallen immature fruits blown down by wind may also be collected during this period.

Primary growing regions

The parent tree Terminalia chebula is native to South and Southeast Asia, distributed from India and Nepal east to southwest China (Yunnan), and south through Sri Lanka, Myanmar, and Vietnam. In China, it grows in sparse forests at elevations of 800–1,540 metres in Guangdong, Hainan, Guangxi, and Yunnan provinces. Historically, Zang Qing Guo was imported from Nepal and traded through Tibet (hence the name 'Tibetan green fruit'), distributed from there throughout China. Today, the primary domestic growing regions are Yunnan, Guangdong, and Guangxi. Yunnan is considered the main producing area within China.

Quality indicators

Good quality Zang Qing Guo is dry, firm, and solid in texture. The exterior surface should be blackish-brown with clearly visible longitudinal wrinkles. When broken open, the cross-section should show a glassy, resinous sheen with thick, yellowish-green flesh and an indistinct or undeveloped seed kernel. Smaller specimens are typically dark brown throughout with no hollow center and are considered superior. The taste should be distinctly bitter and astringent with a slight sweetness. Avoid fruits that are hollow inside, overly light in weight, or show signs of mold or insect damage. The Chinese Pharmacopoeia specifies moisture content should not exceed 12%, and water-soluble extractives should be no less than 48.5%.

Classical Texts

Key passages from the classical Chinese medical texts that describe Zang Qing Guo and its therapeutic uses

《饮片新参》(Yǐn Piàn Xīn Cān / New Reference for Prepared Medicinal Slices)

Original: 治阴虚白喉，杀虫生津。

Translation: Treats Yin-deficiency type diphtheria, kills parasites and generates fluids.

《高原中草药治疗手册》(Gāo Yuán Zhōng Cǎo Yào Zhì Liáo Shǒu Cè / Handbook for Treatment with Highland Chinese Herbal Medicines)

Original: 清热生津，解毒涩肠。治肺炎，痢疾，阴虚白喉。解乌头毒。

Translation: Clears Heat, generates fluids, resolves toxins, and astringes the intestines. Treats pneumonia, dysentery, and Yin-deficiency type diphtheria. Resolves Aconite (Wu Tou) poisoning.

《饮片新参》(Yǐn Piàn Xīn Cān) — Caution

Original: 风火喉痛及中寒者忌用。

Translation: Contraindicated in sore throat from Wind-Fire patterns and in those with interior Cold.

Historical Context

The history and evolution of Zang Qing Guo's use in Chinese medicine over the centuries

The name Zang Qing Guo (藏青果) literally means 'Tibetan green fruit,' reflecting its historical trade route rather than its place of origin. The herb was traditionally imported from Nepal and transported through Tibet into the Chinese interior, which led to the association with Tibet in its name. It is also called Xi Qing Guo (西青果, 'Western green fruit') and Xi Zang Qing Guo (西藏青果, 'Tibetan green fruit'). An important point of clarification: Zang Qing Guo is NOT the same herb as Qing Guo (青果), which is the mature fruit of the olive tree (Canarium album, Burseraceae family). Despite the similar names, they come from completely different plant families and have distinct clinical applications.

Zang Qing Guo is the immature fruit of the He Zi (诃子) tree, Terminalia chebula. While the mature fruit He Zi is a well-known astringent herb documented in classical texts as far back as the Tang dynasty (mentioned in the Xin Xiu Ben Cao), the immature fruit gained its own recognition as a distinct medicinal substance somewhat later, primarily through texts like the Yin Pian Xin Can and the Handbook for Treatment with Highland Chinese Herbal Medicines. In Tibetan medicine, the parent plant He Zi is known as 'the king of medicines' due to its wide-ranging therapeutic applications, and the immature fruit was particularly valued for throat conditions. The herb gained clinical prominence in modern China for its use in treating Yin-deficiency type diphtheria (白喉), and is now most commonly encountered in prepared lozenges and granules for chronic pharyngitis.

Modern Research

3 published studies investigating the pharmacological effects or clinical outcomes of Zang Qing Guo

1

Tannin extracts from immature fruits of Terminalia chebula promote cutaneous wound healing in rats (Preclinical study, 2011)

Li K, Diao Y, Zhang H, Wang S, Zhang Z, Yu B, Huang S, Yang H. BMC Complementary and Alternative Medicine, 2011, 11:86.

This study investigated tannin extracts from the dried immature fruits of Terminalia chebula (the same plant part as Zang Qing Guo) and found they promoted wound healing in rats. The tannin-rich extracts showed strong antibacterial activity against Staphylococcus aureus and Klebsiella pneumoniae, and accelerated granulation tissue formation and collagen organization with a significant increase in VEGF (vascular endothelial growth factor) expression at the wound site.

DOI
2

A comprehensive review on the diverse pharmacological perspectives of Terminalia chebula Retz. (Comprehensive review, 2022)

Saha S, Verma RJ. Heliyon, 2022, 8(8):e10220.

This comprehensive review surveyed pharmacological studies on Terminalia chebula from 1996 to 2021. The review documented evidence for antioxidant, antimicrobial, anti-diabetic, hepatoprotective, anti-inflammatory, and anti-ageing properties of the plant's fruit extracts. Key bioactive tannins including chebulinic acid, chebulagic acid, and gallic acid were identified as likely responsible for many of these activities. The review noted that chebulagic acid possesses anti-inflammatory activity through inhibition of COX-2 and 5-LOX enzymes.

DOI
3

The development of Terminalia chebula Retz. (Combretaceae) in clinical research (Comprehensive review, 2013)

Bag A, Bhattacharyya SK, Chattopadhyay RR. Asian Pacific Journal of Tropical Medicine, 2013, 6(3):244-252.

This review documented the wide range of pharmacological and medicinal activities of Terminalia chebula, including antioxidant, antimicrobial, antidiabetic, hepatoprotective, anti-inflammatory, antimutagenic, antiproliferative, cardioprotective, and wound healing activities. The review noted that the plant has a long history of use across multiple traditional medicine systems including Chinese medicine, Ayurveda, and Tibetan medicine.

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.