Herb Fruit (果 guǒ / 果实 guǒ shí)

Yu Gan Zi

Emblic fruit · 余甘子

Phyllanthus emblica L. · Fructus Phyllanthi

Also known as: You Gan Zi (油甘子), An Mo Le (庵摩勒), Amla

Yu Gan Zi (Emblic fruit) plant

Images shown are for educational purposes only

Yu Gan Zi (Indian gooseberry) is a cooling fruit used in Chinese and Tibetan medicine to clear internal heat, soothe sore throats, aid digestion, and relieve thirst and dry cough. It is exceptionally rich in vitamin C and has been valued for centuries across Asian medical traditions. Its distinctive taste starts sour and astringent but finishes with a pleasant sweetness, which is how it got its name meaning 'lingering sweetness.'

Category Herbs that clear Heat and cool the Blood (清热凉血药)
Therapeutic focus Digestive Health Throat Health Antioxidant support Cardiovascular Health

TCM Properties

Temperature

Cool

Taste

Sweet (甘 gān), Sour (酸 suān), Astringent (涩 sè)

Channels entered

Lungs, Stomach

Parts used

Fruit (果 guǒ / 果实 guǒ shí)

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 Yu Gan Zi does in the body, explained in both everyday and TCM terms

Therapeutic focus

In practical terms, Yu Gan Zi is primarily used to support these areas of health:

Digestive Health Throat Health Antioxidant support Cardiovascular Health

TCM Actions

In TCM terminology, these are the specific therapeutic actions that Yu Gan Zi performs to restore balance in the body:

Clears Heat and Cools the Blood Strengthens the Spleen and Promotes Digestion Moistens the Lungs and Stops Cough Benefits the Throat

How these actions work

'Clears Heat and cools the Blood' means this herb can reduce excess Heat in the body that has entered the Blood level. When Heat invades the Blood, it can cause the blood to move recklessly, leading to various bleeding issues, skin rashes, or a feeling of restless internal heat. Yu Gan Zi's cool nature and sour-sweet-astringent taste combination allows it to clear this Heat while the astringent quality helps stabilize the Blood. This is particularly relevant in conditions where there are signs of Blood Heat such as nosebleeds, rashes, or a flushed complexion with irritability.

'Promotes digestion and strengthens the Stomach' refers to this herb's ability to help the Stomach break down food more effectively. Its sour taste naturally stimulates digestive secretions and moves stagnant food, while its sweet taste gently supports Stomach function. This makes it useful for bloating, indigestion, poor appetite, and abdominal discomfort after eating, especially when these symptoms are accompanied by signs of Heat.

'Generates fluids and stops cough' describes two related actions. The sour and sweet tastes work together to stimulate the body's production of fluids (a process called 'acid-sweet transformation into Yin'), which relieves dry mouth, thirst, and dryness in the throat and Lungs. By moistening the Lungs and clearing Lung Heat, it can also calm coughs, particularly dry coughs with little phlegm or a scratchy, sore throat. This is why one of its folk names is 'throat sweet seed' (喉甘子).

Patterns Addressed

In TCM, symptoms cluster into recognizable patterns of disharmony. Yu Gan Zi is used to help correct these specific patterns.

Why Yu Gan Zi addresses this pattern

Yu Gan Zi's cool nature directly counteracts Heat that has entered the Blood level. Its sour and astringent tastes help constrain the Blood, preventing it from moving recklessly under the influence of Heat. By entering the Lung and Stomach channels, it cools Heat in those organs that may be generating or transmitting pathological warmth into the Blood. The sweet taste gently protects Yin fluids, which are easily damaged when Blood Heat is present.

A practitioner would look for one or more of these signs

Nosebleeds

Bleeding due to Blood Heat forcing blood out of the vessels

Skin Rashes

Red skin eruptions driven by Heat in the Blood

Irritability

Restlessness and agitation from internal Heat

Commonly Used For

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

Arises from: Lung Heat

TCM Interpretation

In TCM, most sore throats involving redness, swelling, and burning pain are understood as Heat rising along the Lung channel to the throat. The Lungs 'open to the nose' and their channel passes through the throat, making the throat especially vulnerable when Lung Heat is present. This Heat may come from external Wind-Heat invasion (like catching a cold), or from internal Heat building up due to overwork, emotional stress, or diet. When Heat dries out the throat's protective fluids, the tissue becomes inflamed and painful.

Why Yu Gan Zi Helps

Yu Gan Zi directly enters the Lung channel and clears Heat, targeting the root cause of the inflammation. Its cool nature reduces the excessive warmth irritating the throat tissue. Simultaneously, its sour and sweet tastes generate fluids that re-moisten the dried-out throat lining. The astringent quality helps reduce swelling of the local tissue. This combination of clearing Heat, generating fluids, and gently astringing inflamed tissue makes it particularly effective for throat discomfort. Its folk name 'throat sweet seed' (喉甘子) reflects centuries of traditional use for this exact purpose.

Also commonly used for

Hypochondrial Pain That Is Worse On Coughing And Breathing

Dry cough or cough with Heat signs

Hypertension

Folk use of fresh fruit for mild blood pressure management

Hyperlipidemia

Modern research supports lipid-lowering effects

Chronic Pharyngitis

One of its most common clinical applications

Nosebleeds

When caused by Blood Heat

Gastritis

Especially Heat-type gastritis with acid reflux and discomfort

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

Sweet (甘 gān), Sour (酸 suān), Astringent (涩 sè)

Channels Entered

Lungs Stomach

Parts Used

Fruit (果 guǒ / 果实 guǒ shí)

Dosage & Preparation

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

Standard dosage

3-9g (dried fruit in decoction); 10-30 fresh fruits when using fresh fruit

Maximum dosage

Up to 30g of dried fruit in decoction for acute conditions; fresh fruit up to 30 pieces. This is a food-grade herb with a high safety margin.

Dosage notes

The standard Pharmacopoeia dose of 3-9g is for dried fruit in decoction. For clearing Heat and soothing the throat (as in sore throat and cough), fresh fruit juice or higher decoction doses (15-30g) may be used. For digestive complaints such as food stagnation, 5-10 fresh or salt-preserved fruits can be chewed directly. For high blood pressure, folk usage calls for 5-8 fresh fruits eaten raw twice daily. Prolonged use at high doses in people with cold-type constitutions may cause loose stools or abdominal discomfort due to the herb's cool nature.

Preparation

No special decoction handling required. The dried fruit is decocted normally. Fresh fruit juice can also be taken directly or diluted with water. Salt-preserved or honey-preserved fruit is a traditional preparation for throat complaints.

Processing Methods

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

Processing method

The dried fruit is soaked or sprinkled with salt water solution (approximately 10% salt), allowed to absorb the salt, then dried. Some traditional preparations involve extended salt-brining for several days.

How it changes properties

Salt processing directs the herb's action downward and toward the Kidneys. It slightly moderates the sour-astringent taste, making the herb more palatable. The salt also enhances the fluid-generating effect and may strengthen the herb's ability to benefit the throat by increasing its descending and moistening properties. The overall cool nature is preserved.

When to use this form

Preferred when the primary goal is soothing the throat, or when a milder, more balanced flavor profile is needed for extended use. The salt-preserved form is the most common traditional preparation for daily consumption and throat care.

Common Herb Pairs

These ingredients are traditionally combined with Yu Gan Zi for enhanced therapeutic effect

He Zi
He Zi 1:1

Yu Gan Zi and He Zi (Terminalia chebula) are two of the 'Three Great Fruits' of Tibetan medicine. Together, they powerfully clear Heat from the throat and Lungs while He Zi's strong astringent action complements Yu Gan Zi's fluid-generating quality. Yu Gan Zi clears Heat and generates fluids while He Zi astringes the Lungs and intestines, creating a balanced effect that clears without scattering and astringes without trapping Heat.

When to use: Chronic pharyngitis, sore throat, persistent cough, and digestive complaints where both Heat-clearing and astringing actions are needed.

Sang Ye
Sang Ye 1:1 (Sang Ye 10g : Yu Gan Zi 10g)

Sang Ye (Mulberry leaf) disperses Wind-Heat from the Lung exterior while Yu Gan Zi clears Lung Heat from the interior and generates fluids. Together they address both the external invasion and the internal dryness that accompany Wind-Heat cough with sore throat.

When to use: Early-stage Wind-Heat invasion with sore throat, dry cough, and thirst. The pair is especially useful when Lung Heat and Lung dryness coexist.

Jie Geng
Jie Geng Jie Geng 6g : Yu Gan Zi 10-15g

Jie Geng (Platycodon root) opens and directs the action of other herbs upward to the throat and Lungs. Combined with Yu Gan Zi, it guides the Heat-clearing and fluid-generating effects directly to the throat, enhancing relief for pharyngitis and throat inflammation.

When to use: Sore throat, hoarseness, and throat dryness where the therapeutic action needs to be focused on the upper respiratory tract.

Ge Gen
Ge Gen 1:1 (Ge Gen 15g : Yu Gan Zi 15g)

Ge Gen (Kudzu root) generates fluids and clears Heat from the Stomach and Lung levels. Paired with Yu Gan Zi, the two herbs amplify each other's fluid-generating and Heat-clearing actions, particularly useful for thirst, dry mouth, and early-stage wasting-thirst patterns.

When to use: Excessive thirst with dry mouth, adjunctive support in diabetes management, or Heat-type conditions with significant fluid depletion.

Comparable Ingredients

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

He Zi
Yu Gan Zi vs He Zi

Both Yu Gan Zi and He Zi (Terminalia chebula) clear Heat from the Lungs and benefit the throat, and both are important in Tibetan medicine. However, He Zi is primarily astringent and descending, focusing on restraining Lung Qi to stop chronic cough and binding the intestines to stop diarrhea. Yu Gan Zi is more cooling and fluid-generating, making it better for conditions with significant Heat and dryness. He Zi is better for chronic, deficiency-type cough and diarrhea; Yu Gan Zi is better when active Heat needs clearing and fluids need replenishing.

Wu Mei
Yu Gan Zi vs Wu Mei

Both herbs are sour and generate fluids. However, Wu Mei (dark plum) is warm in nature and strongly astringent, focused on restraining leakage (stopping chronic diarrhea, sweating, and bleeding) and calming roundworms. Yu Gan Zi is cool and focuses on clearing Heat while generating fluids. For thirst and dry mouth due to Heat, Yu Gan Zi is clearly preferred. For chronic diarrhea, unrelenting thirst in Yin deficiency without active Heat, or parasitic conditions, Wu Mei would be chosen instead.

Lu Gen
Yu Gan Zi vs Lu Gen

Both herbs clear Heat, generate fluids, and benefit the Lungs and Stomach. Lu Gen (reed rhizome) is cold and sweet, with a stronger focus on clearing Stomach Heat to stop vomiting and promoting urination. Yu Gan Zi is milder in its cooling action but adds the ability to promote digestion and benefit the throat through its sour-astringent properties. For high fevers with intense thirst and vomiting, Lu Gen may be more appropriate. For sore throats, indigestion, and moderate Heat with dryness, Yu Gan Zi is preferred.

Common Substitutes & Adulterants

Related species and common adulterations to be aware of when sourcing Yu Gan Zi

Yu Gan Zi (Phyllanthus emblica) is sometimes confused with other "olive-like" fruits in the Chinese market, particularly Qing Guo (青果, Canarium album, Chinese olive) due to the regional nickname "Dian Gan Lan" (滇橄榄, Yunnan olive). These are entirely different species with different properties. Yu Gan Zi can also be confused with the closely related He Zi (诃子, Terminalia chebula) and Mao He Zi (毛诃子, Terminalia bellirica), which are traditionally grouped together as the "three fruits" (三勒) in both Ayurvedic and Tibetan medicine. Quality of commercial Yu Gan Zi varies significantly between wild-harvested and cultivated varieties, with cultivated improved varieties sometimes having different phytochemical profiles from the traditional wild fruit.

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

Toxicity Classification

Classical Chinese pharmacopoeia toxicity rating for Yu Gan Zi

Non-toxic

Yu Gan Zi is classified as non-toxic in classical Chinese sources. The Tang Ben Cao explicitly states it is "without toxicity" (无毒). Modern toxicological studies in animal models confirm its safety: acute oral toxicity testing showed no adverse effects at a single dose of 5,000 mg/kg body weight (LD50 greater than 5,000 mg/kg), and chronic toxicity studies at daily doses of 300-1,200 mg/kg for 270 days showed only minor differences from controls. The fruit is widely consumed as food throughout South and Southeast Asia. The high tannin content (up to 45% in ripe fruit) may cause mild gastrointestinal discomfort in sensitive individuals when consumed in large quantities on an empty stomach.

Contraindications

Situations where Yu Gan Zi should not be used or requires extra caution

Caution

People with Spleen and Stomach deficiency-cold (spleen-stomach weakness with cold symptoms such as chronic loose stools, poor appetite, and cold abdomen). Yu Gan Zi is cool in nature and may worsen cold-type digestive symptoms.

Caution

Concurrent use with other strongly cooling or Heat-clearing herbs should be approached cautiously, as the combined cold nature may injure Spleen and Stomach Yang.

Caution

Pregnancy: use with caution. Although no specific toxic mechanism to the fetus has been documented, the cool nature and astringent properties warrant medical guidance before use during pregnancy.

Special Populations

Important considerations for pregnancy, breastfeeding, and pediatric use

Pregnancy

Use with caution during pregnancy. No specific teratogenic or embryotoxic effects have been documented in the literature, and Yu Gan Zi is widely consumed as a food fruit. However, its cool nature could theoretically affect digestive function during pregnancy, and some traditional sources advise caution. Pregnant women should consult a qualified practitioner before using it medicinally.

Breastfeeding

No specific adverse effects during breastfeeding have been documented. Yu Gan Zi is widely consumed as a food fruit and is rich in vitamin C and antioxidants. At standard medicinal doses, it is generally considered compatible with breastfeeding. However, its cool nature means it should be used cautiously if the nursing mother has signs of Spleen-Stomach cold deficiency, as digestive disturbance in the mother could indirectly affect milk quality.

Children

Yu Gan Zi is generally considered safe for children, as the fruit is widely eaten as a food across South and Southeast Asia. For medicinal use in decoction, reduce dosage proportionally based on age and body weight (typically one-third to one-half of adult dose for children over 6 years). The sour and astringent taste may be poorly tolerated by young children. Fresh fruit or salt-preserved fruit can be given in small amounts. Not recommended for children with chronic diarrhea or cold-type digestive weakness.

Drug Interactions

If you are taking pharmaceutical medications, be aware of these potential interactions with Yu Gan Zi

No well-documented serious drug interactions have been established in clinical literature. However, based on known pharmacological properties, the following theoretical considerations apply:

  • Anticoagulant/antiplatelet medications: Clinical studies have shown P. emblica can inhibit platelet aggregation. Concurrent use with warfarin, aspirin, or other anticoagulants should be monitored.
  • Antidiabetic medications: P. emblica has demonstrated blood glucose-lowering effects comparable to glibenclamide in some studies. Combined use with insulin or oral hypoglycaemics could potentiate hypoglycaemia. Blood sugar monitoring is advised.
  • Antihypertensive medications: The fruit has shown blood pressure-lowering effects in clinical trials. Additive effects with antihypertensive drugs are theoretically possible.
  • Iron absorption: The high tannin content (up to 45%) may reduce iron absorption when taken simultaneously with iron supplements. Separate administration by at least 2 hours.

Dietary Advice

Foods and dietary considerations when taking Yu Gan Zi

For people taking Yu Gan Zi to clear Heat and soothe the throat, avoid excessively spicy, fried, or hot-natured foods that may counteract its cooling effects. When using it for digestive complaints, avoid cold and raw foods if the constitution tends toward Spleen-Stomach coldness. The fruit pairs well with honey for throat-soothing preparations. Traditional practice includes salt-curing or honey-preserving the fruit for regular consumption.

Botanical Description

Physical characteristics and morphology of the Yu Gan Zi source plant

Phyllanthus emblica L. (Phyllanthaceae/Euphorbiaceae) is a deciduous tree that can grow up to 23 metres tall with a trunk diameter of up to 50 cm. The bark is light brownish-grey and the branchlets bear fine longitudinal striations covered in yellowish-brown short hairs. The leaves are small, papery to leathery, arranged in two neat rows along the branches, linear-oblong in shape, giving the foliage a feathery, fern-like appearance that folds at dusk, similar to the Mimosa tree (Albizia). Flowers appear from April to June: small yellow blossoms arranged in axillary clusters of mostly male flowers with one or a few female flowers. The fruit is a drupe-like capsule, nearly spherical, 1.2 to 2 cm in diameter, yellowish-green when ripe, with six faint longitudinal ridges. When dried, the hard endocarp splits into six segments, each containing a small triangular brown seed.

Yu Gan Zi is a strongly sun-loving species native to tropical and subtropical regions. It grows at elevations of 200 to 2,300 metres on hillsides, sparse forests, scrublands, and sunny slopes. It is highly drought-tolerant and adaptable to poor soils, preferring warm climates and acidic red soils.

Sourcing & Harvesting

Where Yu Gan Zi is sourced, when it's harvested or collected, and how to assess quality

Harvesting season

Winter through early spring, when the fruits are fully mature (typically November to March).

Primary growing regions

Primarily produced in Yunnan province, which is the main commercial source in China. Also produced in Sichuan, Guizhou, Fujian, Guangdong, Guangxi, Hainan, Taiwan, and Jiangxi provinces. As a Tibetan medicine staple, it is classified among Tibetan (藏药) daodi materials from the Qinghai-Tibet Plateau region. Yunnan's dry-hot river valleys (particularly areas around Baoshan and the Nujiang region) produce high-quality fruit with rich phytochemical content. Internationally, India is the world's largest producer, where it is known as Amla.

Quality indicators

Good quality dried Yu Gan Zi fruit is plump and round, with thick flesh. The surface should be brownish to dark green with visible fine yellowish granular protrusions and subtle six-ridged markings. The outer skin should be 1-4 mm thick, hard and crisp. When broken open, the inner endocarp is yellowish-white and hard. The aroma should be faint, and the taste distinctly sour and astringent with a pronounced lingering sweet aftertaste (回甜). Fruits that are large, thick-fleshed, and have a strong sweet aftertaste are considered the best quality. Avoid fruits that are shrivelled, overly dark, mouldy, or lacking the characteristic sweet aftertaste.

Classical Texts

Key passages from the classical Chinese medical texts that describe Yu Gan Zi and its therapeutic uses

Tang Ben Cao (《唐本草》, Tang Dynasty):
「庵摩勒味苦甘，寒，无毒。主风虚热气。」
"An Mo Le is bitter and sweet in flavour, cold in nature, and non-toxic. It mainly treats Wind, deficiency, and Heat."

Hai Yao Ben Cao (《海药本草》, late Tang Dynasty):
「主丹石伤肺，上气咳嗽。久服轻身，延年长生。」
"It mainly treats lung damage from mineral medicines, and upward-rushing Qi with coughing. Long-term use lightens the body and prolongs life."

Ben Cao Shi Yi (《本草拾遗》):
「主补益、强气力。生发，去风痒。」
"It mainly supplements and strengthens the body's vitality. It promotes hair growth and relieves Wind-type itching."

Ben Cao Gang Mu (《本草纲目》, Li Shizhen, Ming Dynasty):
「主治风虚热气，丹石伤肺，久服轻身，延年长生，有解金石毒，解硫黄毒。」
"It mainly treats Wind, deficiency, and Heat. It addresses lung injury from mineral medicines. Long-term use lightens the body and extends lifespan. It can detoxify mineral and sulphur poisoning."

Dian Nan Ben Cao (《滇南本草》, Ming Dynasty):
「味甘、酸，性平。治一切喉火上炎、大头瘟症。能解湿热春温，生津止渴，利痰。」
"Sweet and sour in taste, neutral in nature. Treats all throat inflammations and pestilential swelling. It can resolve Damp-Heat and seasonal warmth diseases, generate fluids, quench thirst, and help clear phlegm."

Historical Context

The history and evolution of Yu Gan Zi's use in Chinese medicine over the centuries

Etymology and cultural origins: The name Yu Gan Zi (余甘子) literally means "lingering sweetness seed," describing the fruit's distinctive taste experience: initially sour and astringent, it produces a sweet aftertaste that lingers in the mouth. As the Tu Jing Ben Cao (《图经本草》) records, "when eaten, at first it tastes bitter, but after swallowing it becomes sweeter, hence the name." The fruit has over 1,700 years of documented use in China, with the earliest record appearing in the Jin Dynasty text Nan Fang Cao Mu Zhuang (《南方草木状》).

Cross-cultural transmission: Yu Gan Zi has deep connections to Indian Ayurvedic medicine, where it is called Amla or Amalaki. Its Sanskrit name was transliterated into Chinese as "An Mo Le" (庵摩勒). The fruit entered Chinese medical consciousness partly through Buddhist cultural exchange. It appears in early Buddhist texts as one of the "three fruits" (三果). Indian monks carried dried Yu Gan Zi as a daily medicine, and through the spread of Buddhism, its medicinal value became recognised in China. During the Tang Dynasty it was formally included in the Tang Ben Cao. A famous alcoholic beverage called "San Le Jiang" (三勒浆), made from Yu Gan Zi, Mao He Zi (Terminalia bellirica), and He Zi (Terminalia chebula), was brought to China via the Silk Road from Persia and became popular among Tang Dynasty elites.

Literary and culinary history: The Song Dynasty poet Huang Tingjian wrote a verse praising the fruit. Su Shi (Su Dongpo), while exiled to Huizhou, recorded eating Yu Gan Zi as an accompaniment to wine. Li Shizhen later noted it could be "preserved in honey or salt-cured." In 1998, China's Ministry of Health designated Yu Gan Zi as a dual-purpose food-and-medicine material.

Modern Research

5 published studies investigating the pharmacological effects or clinical outcomes of Yu Gan Zi

1

Comprehensive Review: Traditional uses, bioactive composition, pharmacology, and toxicology of Phyllanthus emblica fruits (2021)

Iqbal E et al., Journal of Ethnopharmacology, 2022, 282, 114654

A comprehensive review summarizing ethnopharmacological uses, phytochemistry, and safety data for P. emblica fruit. The review found substantial evidence for antimicrobial, antioxidant, anti-inflammatory, anti-diabetic, anticancer, hepatoprotective, and immunomodulatory activities. Toxicological studies indicated no adverse effects even at high oral doses. The authors noted gaps in understanding of mechanisms of action.

PubMed
2

RCT: Antihypertensive and pleiotropic effects of Phyllanthus emblica extract as add-on therapy in essential hypertension (2021)

Not fully retrievable from search results

A randomized, double-blind, placebo-controlled trial on 150 patients with essential hypertension. Participants received P. emblica capsules (500 mg) or placebo twice daily for 12 weeks, added to their routine medications. The study evaluated blood pressure, arterial stiffness, and antioxidant status as outcomes.

PubMed
3

Systematic review and meta-analysis: Clinical effects of Emblica officinalis fruit on cardiovascular disease risk factors (2023)

Published in BMC Complementary Medicine and Therapies, 2023

A systematic review and meta-analysis of randomized controlled trials assessing the effects of P. emblica fruit consumption on blood lipids, blood pressure, and inflammatory biomarkers. The authors found promising effects on cardiovascular risk factors but noted that statistical and clinical heterogeneity in the limited number of trials means results should be interpreted with caution. Further high-quality research was recommended.

PubMed
4

RCT: Efficacy and safety of Emblica officinalis extract in patients with dyslipidemia (2019)

Published in BMC Complementary and Alternative Medicine, 2019

A randomized, double-blind, placebo-controlled, multicentre clinical trial enrolling 98 dyslipidemic patients. Amla extract (500 mg) or placebo was administered twice daily for 12 weeks. The study assessed lipid profile, apolipoprotein levels, CoQ10, hsCRP, and other metabolic markers.

PubMed
5

RCT: Standardized aqueous extract of Phyllanthus emblica on endothelial dysfunction, oxidative stress, and lipid profile in metabolic syndrome (2019)

Published in BMC Complementary and Alternative Medicine, 2019

A randomized, double-blind, placebo-controlled trial evaluating standardized P. emblica aqueous extract (250 mg and 500 mg twice daily) on endothelial function, oxidative stress, systemic inflammation, and lipid profile in subjects with metabolic syndrome. Endothelial function was measured using digital plethysmography.

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.