Herb Peel / Rind (皮 pí / 果皮 guǒ pí)

Gua Lou Pi

Trichosanthes peel · 瓜蒌皮

Trichosanthes kirilowii Maxim. · Trichosanthis Pericarpium

Also known as: 栝楼皮, 栝楼壳, 瓜壳,

Gua Lou Pi (Trichosanthes peel) plant

Images shown are for educational purposes only

Trichosanthes peel is the dried rind of the Trichosanthes fruit, a gourd used in Chinese medicine for centuries to clear sticky phlegm from the lungs and relieve chest tightness. It is commonly used for coughs with thick yellow phlegm, a feeling of constriction or pain in the chest, and conditions where mucus and heat accumulate in the upper body. It is one of the key herbs in classical formulas for chest pain related to heart conditions.

Category Herbs that cool and transform Phlegm-Heat (清化热痰药)
Therapeutic focus Respiratory Health Chest Pain Relief Heart health Cough and Phlegm Relief

TCM Properties

Temperature

Cold

Taste

Sweet (甘 gān), Bitter (苦 kǔ)

Channels entered

Lungs, Stomach

Parts used

Peel / Rind (皮 pí / 果皮 guǒ pí)

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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 Gua Lou Pi does in the body, explained in both everyday and TCM terms

Therapeutic focus

In practical terms, Gua Lou Pi is primarily used to support these areas of health:

Respiratory Health Chest Pain Relief Heart health Cough and Phlegm Relief

TCM Actions

In TCM terminology, these are the specific therapeutic actions that Gua Lou Pi performs to restore balance in the body:

Clears Heat and Transforms Phlegm Opens the Chest and Disperses Stagnation Clears Lung Heat and Stops Cough Dissipates Nodules and Softens Hardness

How these actions work

'Clears Heat and transforms Phlegm' refers to Guā Lóu Pí's ability to cool down excessive heat in the Lungs and break up thick, sticky mucus (Phlegm-Heat). When the Lungs are affected by heat, a person may develop a cough with yellow, hard-to-expectorate phlegm, a dry or sore throat, and a feeling of heaviness in the chest. Guā Lóu Pí's cold nature and sweet-bitter taste make it well suited to clear this type of hot, stubborn Phlegm. It is commonly paired with herbs like Chuān Bèi Mǔ (Fritillaria) or Jié Gěng (Platycodon) to strengthen this effect.

'Moves Qi and opens the chest' means that Guā Lóu Pí helps to relieve blockages in the chest area where Qi has become stuck. This is its most distinctive action. When Qi stagnates in the chest, people feel tightness, fullness, constriction, or pain in the chest and ribcage area. Guā Lóu Pí has a natural ability to loosen and 'open up' the chest, restoring the smooth circulation of Qi. This is why it has been a key herb for treating chest obstruction (called 'chest impediment' or xiōng bì in Chinese medicine) for nearly two thousand years, typically combined with Xiè Bái (Allium macrostemon) and Bàn Xià (Pinellia).

'Clears the Lungs and stops cough' describes its role in soothing Lung conditions marked by heat. Its cold nature enters the Lung channel to calm inflammation and reduce coughing, especially the type of cough where the phlegm is difficult to bring up or where the throat feels dry and hoarse. This is different from warming cough remedies, which would not be appropriate when heat is present.

'Disperses clumps and dissipates nodules' relates to its use in early-stage breast abscesses and certain types of swelling where Phlegm and Qi congestion form palpable lumps. It can help soften and resolve these accumulations when combined with herbs like Pú Gōng Yīng (Dandelion) and Rǔ Xiāng (Frankincense).

Patterns Addressed

In TCM, symptoms cluster into recognizable patterns of disharmony. Gua Lou Pi is used to help correct these specific patterns.

Why Gua Lou Pi addresses this pattern

Guā Lóu Pí is cold in nature and enters the Lung channel, giving it a direct ability to clear Heat from the Lungs and dissolve thick, sticky Phlegm. In Phlegm-Heat Obstructing the Lungs, hot pathogenic factors have 'cooked' normal body fluids into thick, yellow, hard-to-expectorate mucus that blocks the Lung's ability to descend and disperse Qi. Guā Lóu Pí's sweet taste moistens and loosens this condensed Phlegm while its bitter quality helps descend and drain it. It simultaneously cools the heat that caused the Phlegm to thicken, addressing both the root cause and the symptom.

A practitioner would look for one or more of these signs

Hypochondrial Pain That Is Worse On Coughing And Breathing

Cough with thick, yellow, difficult-to-expectorate phlegm

Chest Stiffness

Feeling of fullness and heaviness in the chest

Sore Throat

Dry, sore or hoarse throat from Lung Heat

Wheezing

Wheezing or laboured breathing due to Phlegm obstruction

Commonly Used For

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

Arises from: Phlegm-Fluids in the chest and hypochondrium

TCM Interpretation

In TCM, angina pectoris falls under the category of 'chest impediment' (xiōng bì) and 'heart pain' (xīn tòng). The core mechanism, as described in the Jīn Guì Yào Lüè (Chapter 9), is 'insufficient Yáng above and excessive Yīn below' (yáng wēi yīn xián). When chest Yáng becomes weak, it can no longer keep turbid Yīn substances (Phlegm, Cold, Dampness, Blood stasis) from congealing in the chest. This obstruction blocks the Heart vessels, causing the characteristic squeezing chest pain that may radiate to the back, shortness of breath, and inability to lie flat. The pattern is often aggravated by cold weather, emotional stress, or physical exertion, all of which further impede the chest Yáng.

Why Gua Lou Pi Helps

Guā Lóu Pí is the King herb in the classical Guā Lóu Xiè Bái formula series specifically created for this condition. Its cold, sweet nature clears the turbid Phlegm that congests the chest vessels, while its powerful Qi-moving action opens up the chest and restores normal circulation. Modern pharmacological research has confirmed that Trichosanthes peel can increase coronary artery blood flow, lower heart rate, and strengthen cardiac contractility. When paired with Xiè Bái (which warms the chest Yáng) and Bàn Xià (which dries Dampness and expels Phlegm), it forms the backbone of formulas that have been used for chest pain for nearly two thousand years and remain a foundation of TCM cardiovascular treatment today.

Also commonly used for

Pneumonia

As part of formulas for lung infections with thick yellow sputum

Chest Pain

Chest tightness and pain from Qi stagnation and Phlegm obstruction

Intercostal Neuralgia

Rib and chest wall pain attributed to Qi obstruction

Breast Abscess

Early-stage breast swelling and pain before pus formation

Asthma

Wheezing and dyspnea with Phlegm-Heat

Pleurisy

Chest pain with fluid accumulation in the pleural space

Coronary Artery Disease

Used in Guā Lóu Xiè Bái formulas to improve coronary blood flow

Herb Properties

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

Temperature

Cold

Taste

Sweet (甘 gān), Bitter (苦 kǔ)

Channels Entered

Lungs Stomach

Parts Used

Peel / Rind (皮 pí / 果皮 guǒ pí)

Dosage & Preparation

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

Standard dosage

6-12g

Maximum dosage

Up to 15g in decoction for acute phlegm-heat cough or chest pain, under practitioner supervision.

Dosage notes

Use 6-9g for mild phlegm-heat cough with chest tightness. Use 9-12g for more pronounced chest impediment (xiong bi) conditions or stubborn phlegm. The peel is typically lightly stir-fried (炒) before use in standard practice to moderate its cold nature. Honey-processed Gua Lou Pi (蜜瓜蒌皮) enhances its ability to moisten the Lungs and is preferred for dry cough. Due to its cold nature, avoid excessive dosage in patients with Spleen-Stomach deficiency Cold, as it may cause nausea or loose stools.

Preparation

No special decoction handling required. Gua Lou Pi is decocted normally with other herbs. It is commonly cut into strips (丝) before use. In practice, it is often lightly stir-fried (炒瓜蒌皮) to slightly reduce its cold property, or honey-processed (蜜瓜蒌皮) to enhance Lung-moistening effects.

Processing Methods

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

Processing method

The raw peel is cut into thin strips, then stir-fried over a gentle flame until it turns brownish-yellow with slight char spots, then removed and cooled.

How it changes properties

Stir-frying moderates the cold nature slightly and reduces the tendency to cause loose stools. The herb becomes more aromatic and its Qi-moving properties are enhanced, making it somewhat better at dispersing stagnation. The Phlegm-clearing and chest-opening actions remain, but the risk of injuring the Spleen and Stomach with excessive cold is reduced.

When to use this form

This is actually the standard dispensing form in most pharmacies. It is preferred for patients with weaker digestion who still need the chest-opening and Phlegm-clearing actions but cannot tolerate the full cold nature of the raw herb.

Common Herb Pairs

These ingredients are traditionally combined with Gua Lou Pi for enhanced therapeutic effect

Xie Bai
Xie Bai Guā Lóu Pí 12-15g : Xiè Bái 9-12g

Guā Lóu Pí opens the chest, dissolves Phlegm, and clears Heat, while Xiè Bái warms the chest Yáng, disperses Cold-Phlegm, and restores Qi flow. Together they form the classical pair that simultaneously removes the Phlegm obstruction and re-establishes the warmth needed for proper chest circulation. This pairing is the foundation of the Guā Lóu Xiè Bái formula series for chest impediment.

When to use: Chest impediment (xiōng bì) with chest pain or tightness, possibly radiating to the back, accompanied by shortness of breath, white greasy tongue coating, and a deep or wiry pulse. Modern application includes coronary heart disease and angina pectoris.

Ban Xia
Ban Xia Guā Lóu Pí 12-15g : Bàn Xià 9-12g

Guā Lóu Pí clears Heat and loosens sticky Phlegm from above, while Bàn Xià dries Dampness, transforms Phlegm, and descends rebellious Qi from the middle. Together they address Phlegm from two angles: Guā Lóu Pí tackles hot, sticky Phlegm while Bàn Xià handles the damp, turbid component. Their combination is stronger than either herb alone for clearing Phlegm obstruction in the chest.

When to use: Phlegm congestion in the chest with cough, fullness, or pain, particularly when Heat and Dampness coexist. Used in both Guā Lóu Xiè Bái Bàn Xià Tāng (for severe chest impediment) and Xiǎo Xiàn Xiōng Tāng (for Phlegm-Heat binding in the epigastrium).

Huang Lian
Huang Lian Guā Lóu (whole or peel) 15-30g : Huáng Lián 3-6g

Guā Lóu Pí clears Phlegm-Heat and opens the chest, while Huáng Lián powerfully drains Fire and dries Dampness. Together they form a potent combination for clearing Phlegm-Heat binding in the epigastric and chest regions. Huáng Lián provides the bitter-cold force to directly drain the Heat, while Guā Lóu Pí loosens the Phlegm and unblocks the Qi stagnation it causes.

When to use: Phlegm-Heat binding in the chest or epigastrium causing oppression, fullness, and pain on pressure (the small bound-chest pattern). Also used for gastric or oesophageal reflux with a bitter taste and yellow greasy tongue coating.

Chuan Bei Mu
Chuan Bei Mu Guā Lóu Pí 10-15g : Chuān Bèi Mǔ 5-10g

Both herbs clear Heat and transform Phlegm in the Lungs, but they do so in complementary ways. Guā Lóu Pí opens the chest, moves Qi, and loosens sticky Phlegm, while Chuān Bèi Mǔ moistens Lung dryness, stops cough, and dissipates nodules. Together they provide a combined moistening, loosening, and Phlegm-clearing action ideal for dry Lung-Heat cough with difficult expectoration.

When to use: Dry cough with scanty, sticky, hard-to-expectorate phlegm from Lung Heat or Lung Yin Deficiency with Heat. Used in Bèi Mǔ Guā Lóu Sǎn.

Comparable Ingredients

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

Gua Lou Ren
Gua Lou Pi vs Gua Lou Ren

Both come from the same Trichosanthes fruit but have distinct clinical uses. Guā Lóu Pí (the peel) is stronger at opening the chest, moving Qi, and clearing Phlegm-Heat obstruction in the upper body. Guā Lóu Rén (the seed) is oilier and more moistening, making it better at lubricating the intestines and relieving constipation, as well as moistening dry Phlegm. When chest obstruction and Qi stagnation are the main concern, use the peel. When dry constipation or very dry Lung-Phlegm is the priority, use the seed. When both actions are needed, the whole fruit (Quán Guā Lóu) is used.

Zhu Ru
Gua Lou Pi vs Zhu Ru

Both are cold herbs that clear Phlegm-Heat. Zhú Rú (Bamboo Shavings) is better at clearing Stomach Heat and stopping vomiting, making it the preferred choice when Phlegm-Heat causes nausea, vomiting, or hiccups. Guā Lóu Pí is superior at opening the chest and moving Qi through the Lung and chest region, making it the better choice when the main symptoms are chest pain, tightness, and difficulty breathing with thick phlegm.

Chuan Bei Mu
Gua Lou Pi vs Chuan Bei Mu

Both clear Lung Heat and transform Phlegm, but Chuān Bèi Mǔ is more moistening and nourishing to Lung Yīn, making it ideal for chronic dry cough with scant phlegm from Yīn Deficiency. Guā Lóu Pí has a stronger Qi-moving and chest-opening action and is better when there is significant chest fullness, constriction, or pain alongside the cough. For purely dry Yīn-deficient cough, choose Chuān Bèi Mǔ. For cough with prominent chest tightness or obstruction, choose Guā Lóu Pí.

Common Substitutes & Adulterants

Related species and common adulterations to be aware of when sourcing Gua Lou Pi

Gua Lou Pi may be confused with or substituted by the peel of other Trichosanthes species, particularly T. rosthornii, which is an officially accepted substitute species in the Chinese Pharmacopoeia. However, the two differ somewhat in chemical composition and potency. The peel should be distinguished from the whole fruit (Quan Gua Lou), which includes both peel and seeds and has broader indications including laxative effects. Poor quality material may include excessive amounts of the inner pulp (瓤) adhering to the peel, which should be mostly removed. The seeds (Gua Lou Ren) have quite different clinical applications (focused on moistening intestines) and should not be mixed with the peel preparation.

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

Toxicity Classification

Classical Chinese pharmacopoeia toxicity rating for Gua Lou Pi

Non-toxic

Gua Lou Pi is classified as non-toxic in the Chinese Pharmacopoeia. It has no known toxic components requiring special caution at standard dosages. Note that trichosanthin, the ribosome-inactivating protein studied for its toxicity and anti-HIV properties, is found in the root (Tian Hua Fen) rather than the fruit peel. The peel itself primarily contains polysaccharides, amino acids, flavonoids, and small amounts of alkaloids, none of which pose toxicity concerns at therapeutic doses.

Contraindications

Situations where Gua Lou Pi should not be used or requires extra caution

Avoid

Incompatible with Aconite (Wu Tou) and its processed forms (Fu Zi, Chuan Wu, Cao Wu). This is one of the classical Eighteen Incompatibilities (十八反) and should be strictly observed.

Caution

Spleen and Stomach deficiency Cold with loose stools or diarrhea. Gua Lou Pi is cold in nature and can further damage weakened digestive function.

Caution

Cold-Phlegm or Damp-Phlegm patterns without Heat signs. This herb clears Heat and is indicated specifically for Phlegm-Heat. Using it for cold or damp types of phlegm could worsen the condition.

Caution

Classically noted to 'clash with' (恶) Gan Jiang (dried ginger) and Niu Xi (Achyranthes root). Though not an absolute prohibition, concurrent use is traditionally cautioned against.

Classical Incompatibilities

Traditional Chinese pharmacological incompatibilities — herbs or substances to avoid combining with Gua Lou Pi

Gua Lou (including the peel) is incompatible with Wu Tou (Aconitum, including Chuan Wu and Cao Wu) per the Eighteen Incompatibilities (十八反). It is also classically noted to clash with (恶) Gan Jiang (dried ginger) and Niu Xi (Achyranthes root).

Special Populations

Important considerations for pregnancy, breastfeeding, and pediatric use

Pregnancy

Generally considered safe at standard doses during pregnancy, as the fruit peel does not have strong Blood-moving or downward-draining properties. However, note that the ROOT of the same plant (Tian Hua Fen) contains trichosanthin, which has documented abortifacient activity and is strictly contraindicated in pregnancy. It is important not to confuse Gua Lou Pi (the peel) with Tian Hua Fen (the root). Nonetheless, because Gua Lou Pi is cold in nature and has a mild laxative effect, pregnant women with weak digestion should use it cautiously and under practitioner guidance.

Breastfeeding

No specific contraindications for breastfeeding have been documented in classical or modern sources. Gua Lou Pi is classified as non-toxic. However, its cold nature could theoretically affect digestion in both mother and nursing infant if used in large doses or for extended periods. Standard short-term use in formula context is generally considered acceptable. Consult a qualified practitioner for individualized guidance.

Children

Gua Lou Pi may be used in children at proportionally reduced doses, typically one-third to one-half of the adult dose depending on age and body weight. It is generally well-tolerated. Because of its cold nature, it should be used with caution in children with weak digestive function or a tendency toward loose stools. As with all herbs for children, use should be guided by a qualified practitioner.

Drug Interactions

If you are taking pharmaceutical medications, be aware of these potential interactions with Gua Lou Pi

No well-documented pharmaceutical drug interactions specific to Gua Lou Pi have been established in peer-reviewed literature. However, based on its known pharmacological properties, the following theoretical interactions warrant caution:

  • Anticoagulant/antiplatelet drugs: Gua Lou fruit extracts have demonstrated anti-platelet aggregation effects in preclinical studies. Concurrent use with warfarin, heparin, or antiplatelet agents (aspirin, clopidogrel) could theoretically increase bleeding risk.
  • Antiarrhythmic medications: Gua Lou Pi has shown effects on cardiac rhythm in pharmacological studies. Patients on antiarrhythmic drugs should use with caution.
  • Cardiac glycosides (digoxin): Given the cardiovascular activity of Gua Lou preparations, potential interactions with cardiac glycosides cannot be excluded. Concurrent use should be monitored.

Dietary Advice

Foods and dietary considerations when taking Gua Lou Pi

Avoid cold, raw, and greasy foods while taking Gua Lou Pi, as these can generate more phlegm and counteract the herb's phlegm-clearing action. Limit intake of excessively sweet or sticky foods, which also tend to produce Dampness and Phlegm. Light, warm, easily digestible foods are recommended. Pungent, warming spices in small amounts may complement the formula by helping to move Qi and disperse phlegm.

Botanical Description

Physical characteristics and morphology of the Gua Lou Pi source plant

Trichosanthes kirilowii Maxim. (or T. rosthornii Harms) is a perennial climbing vine in the gourd family (Cucurbitaceae), commonly known as Chinese snake gourd or Chinese cucumber. The plant grows vigorously up to 6-10 metres in length, climbing by 2-3 branched tendrils. Its stems are ridged and covered with fine white hairs. The leaves are alternate, broadly heart-shaped, 5-20 cm across, typically 3-5 lobed, with rough upper surfaces.

The plant is dioecious, meaning male and female flowers grow on separate plants. Flowers are white, appearing from May to August, with distinctive fringed petals that unfurl at night. The fruit is a round to oval gourd, 7-15 cm long and 6-10 cm wide, turning from green to orange-red or orange-yellow when ripe in autumn. The medicinal peel (Gua Lou Pi) is the dried outer rind of this mature fruit, separated from the seeds and inner pulp.

Sourcing & Harvesting

Where Gua Lou Pi is sourced, when it's harvested or collected, and how to assess quality

Harvesting season

Autumn (September to October), when the fruit has fully ripened and the skin has turned orange-yellow to orange-red.

Primary growing regions

The traditional dao di (terroir) production regions for Gua Lou Pi are Shandong, Henan, and Zhejiang provinces in China. Historically, the plant is also found widely across Hebei, Shanxi, and Shaanxi provinces. Shandong and Henan are generally considered to produce the highest quality fruit. The plant prefers warm, subtropical climates and grows in mountainous areas, along hillsides, and on rocky cliffs, thriving in well-drained loamy soils.

Quality indicators

Good quality Gua Lou Pi is typically cut into 2 to several segments with edges curving inward, 6-12 cm long. The outer surface should be a vibrant orange-red or orange-yellow colour with a somewhat wrinkled but glossy texture. The inner surface should be yellowish-white. The texture should be relatively brittle and easy to break. High quality pieces have a characteristic caramel-like (焦糖) aroma and a mild, slightly sour taste. Avoid pieces that are dark brown, mouldy, insect-damaged, or overly dry and crumbly. Pieces with a thick, pliable rind and strong colour are generally preferred.

Classical Texts

Key passages from the classical Chinese medical texts that describe Gua Lou Pi and its therapeutic uses

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

Original: 润肺燥，降火，治咳嗽，涤痰结，利咽喉，止消渴，利大肠，消痈肿疮毒。

Translation: Moistens Lung dryness, descends Fire, treats cough, expels knotted phlegm, benefits the throat, stops thirst-wasting, frees the large intestine, and disperses swollen abscesses and sores.

《本草衍义补遗》(Ben Cao Yan Yi Bu Yi) - Zhu Danxi, Yuan Dynasty

Original: 治嗽之要药。

Translation: An essential medicine for treating cough.

《本草述》(Ben Cao Shu) - Liu Ruojin, Qing Dynasty

Original: 栝楼实，阴厚而脂润，故热燥之痰为对待的剂。若用寒痰、湿痰、气虚所结之痰，饮食积聚之痰，皆无益而有害者也。

Translation: The fruit of Gua Lou is deeply Yin in nature and rich in moisture, so it is the appropriate remedy for phlegm caused by Heat and Dryness. If used for Cold-Phlegm, Damp-Phlegm, phlegm from Qi deficiency, or phlegm from food stagnation, it will be not only useless but harmful.

Historical Context

The history and evolution of Gua Lou Pi's use in Chinese medicine over the centuries

Gua Lou (栝楼) was first recorded as a medicinal substance in the Shen Nong Ben Cao Jing (Divine Farmer's Classic of Materia Medica), where the whole fruit was used without distinguishing its parts. In early classical usage, such as in Zhang Zhongjing's Shang Han Lun and Jin Gui Yao Lue (circa 200 CE), the fruit was prescribed whole and counted by the piece (枚). The famous chest-clearing formulas Gua Lou Xie Bai Bai Jiu Tang and Gua Lou Xie Bai Ban Xia Tang from the Jin Gui Yao Lue established Gua Lou as the key herb for treating thoracic obstruction (chest pain with oppression).

The practice of separating the peel (皮) from the seeds (仁) for distinct medicinal uses began during the Northern and Southern Dynasties period (420-589 CE), with Lei Gong Pao Zhi Lun being among the first texts to note that the peel, seeds, stems, and root each have different therapeutic effects. By the Song and Ming dynasties, this differentiation was well established: the peel was recognized as superior for clearing Lung Heat and widening the chest, while the seeds were preferred for moistening the intestines. In modern clinical practice, Gua Lou Pi has been developed into injectable preparations for treating coronary heart disease and angina pectoris, extending its ancient indication for 'chest impediment' into modern cardiovascular medicine.

Modern Research

4 published studies investigating the pharmacological effects or clinical outcomes of Gua Lou Pi

1

Protective role and mechanism of snakegourd peel against myocardial infarction in rats (Animal study, 2018)

Yang G, Min D, Yan J, Yang M, Lin G. Phytomedicine. 2018; 42: 18-24.

This animal study investigated the cardioprotective effects of Gua Lou Pi extract in a rat model of myocardial infarction. The extract demonstrated protective effects against heart muscle damage, with the mechanism linked to inhibition of the JNK and p38 MAPK signaling pathways, which are involved in cell death after heart attack.

DOI
2

Chemical constituents from the peel of Trichosanthes kirilowii Maxim and their NF-κB inhibitory activity (In vitro study, 2021)

Lei X, Li N, Bai Z, Di J, Zhang H, Dong P, Zhang P. Natural Product Research. 2021; 35(23): 5132-5137.

Researchers isolated chemical constituents from the peel of T. kirilowii and tested their anti-inflammatory activity. The 70% ethanol extract significantly inhibited the activation of NF-κB, a key molecular switch in inflammation, supporting the traditional use of Gua Lou Pi in inflammatory conditions.

DOI
3

Protective effect of Trichosanthes kirilowii peel polysaccharide on oxidative damaged HepG2 and HUASMC cells (In vitro study, 2022)

Zhang et al. Genetics Research. 2022; 2022: 1792977.

This in vitro study found that polysaccharides extracted from T. kirilowii peel (TKPP) protected liver cells and vascular smooth muscle cells from oxidative damage caused by hydrogen peroxide. TKPP significantly promoted the expression of antioxidant enzymes (CAT and SOD), suggesting potential applications in protecting against liver disease and cardiovascular damage.

DOI
4

Trichosanthis fructus: botany, traditional uses, phytochemistry and pharmacology (Review, 2018)

Yu X, Tang L, Wu H, Zhang X, Luo H, Guo R, Xu M, Yang H, Fan J, Wang Z, Su R. Journal of Ethnopharmacology. 2018; 224: 177-194.

A comprehensive review summarizing the traditional uses, chemical composition, and pharmacological activities of Trichosanthes fruit and its parts. The review identified approximately 162 compounds from the plant and documented activities including myocardial ischemia protection, calcium antagonism, anti-platelet aggregation, expectorant, anti-inflammatory, and antioxidant effects.

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.