Herb Flower bud (花蕾 huā lěi)

Jin Yin Hua

Honeysuckle flower · 金银花

Lonicera japonica Thunb. · Flos Lonicerae Japonicae

Also known as: Yin Hua (银花), Shuang Hua (双花), Er Hua (二花),

Images shown are for educational purposes only

Honeysuckle flower is one of the most widely used herbs in Chinese medicine for clearing Heat and fighting infections. It is the go-to herb for hot, swollen sores and for the early stages of colds and flu with fever and sore throat. It is also a popular summer tea for cooling the body in hot weather.

TCM Properties

Temperature

Cold

Taste

Sweet (甘 gān)

Channels entered

Lungs, Heart, Stomach, Large Intestine

Parts used

Flower bud (花蕾 huā lěi)

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What This Herb Does

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

Therapeutic focus

In practical terms, Jin Yin Hua is primarily used to support these areas of health:

TCM Actions

In TCM terminology, these are the specific therapeutic actions that Jin Yin Hua performs to restore balance in the body:

How these actions work

'Clears Heat and resolves toxins' is this herb's primary and most powerful action. Jin Yin Hua has a strong ability to clear toxic Heat from both the Qi level and the Blood level of the body. In practice, this means it is one of the most important herbs for treating hot, swollen, painful sores, boils, and abscesses (called 'Yang-type' sores in TCM because they are red and inflamed). It is sometimes called the 'sacred herb for sores' (疮家圣药). It is also used in any condition where Heat toxins accumulate in the body, including severe throat infections and intestinal infections with bloody stool.

'Disperses Wind-Heat' refers to its ability to gently push out pathogenic Wind-Heat from the body's surface. When a cold or flu begins with fever, sore throat, headache, and thirst (signs of Wind-Heat invasion), Jin Yin Hua helps the body release that Heat outward. Its sweet and cold nature clears the Heat without being harsh, and its light, aromatic quality gives it a mild dispersing action. This is why it serves as the lead herb in Yin Qiao San, the most famous formula for Wind-Heat colds.

'Cools the Blood and stops dysentery' describes its use for hot-type dysentery with bloody, mucus-filled stool caused by Heat toxins lodging in the intestines and invading the Blood level. For this purpose, the charcoal-processed form (Jin Yin Hua Tan) is preferred because charring enhances its ability to stop bleeding while preserving its cooling and detoxifying properties.

'Clears Summerheat' means it can address the oppressive Heat of summer that causes symptoms like fever, thirst, and irritability. Jin Yin Hua steeped as a tea or used as a distilled preparation (Jin Yin Hua Lu) is a traditional summer drink in China for preventing and treating mild heatstroke.

Patterns Addressed

In TCM, symptoms cluster into recognizable patterns of disharmony. Jin Yin Hua is used to help correct these specific patterns.

Why Jin Yin Hua addresses this pattern

When Wind-Heat invades the body's exterior, it first attacks the Lungs and the body's surface defence layer. This produces fever, mild chills, sore throat, headache, and thirst. Jin Yin Hua is sweet and cold, entering the Lung channel, where it both clears Heat and gently disperses the pathogen outward through the body's surface. Its aromatic quality gives it a light, lifting nature that is ideal for reaching the upper body and exterior, making it especially effective in the early stages of Wind-Heat invasion before the pathogen moves deeper.

A practitioner would look for one or more of these signs

Fever

Fever with mild chills at onset

Sore Throat

Sore, red, swollen throat

Headaches

Headache with fever

Thirst

Thirst with desire to drink

Commonly Used For

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

TCM Interpretation

TCM distinguishes between Wind-Cold and Wind-Heat types of common cold. A Wind-Heat cold is characterised by predominant fever (rather than chills), sore throat, yellow nasal discharge, thirst, and a rapid pulse. The pathogenic Wind-Heat invades through the nose and mouth, first affecting the Lungs and the body's surface defence (Wei Qi). The Lungs lose their ability to regulate the opening and closing of pores, leading to fever and disrupted breathing. The Heat component dries fluids, causing thirst and a sore throat.

Why Jin Yin Hua Helps

Jin Yin Hua is cold in nature and enters the Lung channel, directly targeting the Heat lodged in the Lungs and the body's surface. Its sweet taste means it clears Heat gently without harming the Stomach, and its light aromatic quality allows it to reach the upper body and exterior where the pathogen resides. It simultaneously clears Heat from within and disperses the Wind-Heat pathogen outward, addressing both the root cause and symptoms. This is why it serves as the lead herb in Yin Qiao San, the most widely used formula for Wind-Heat colds.

Also commonly used for

Acute Tonsillitis

Red, swollen, painful tonsils

Pharyngitis

Sore throat with inflammation

Mastitis

Acute breast infection with redness and swelling

Cellulitis

Spreading skin infection

Dysentery

Bacillary dysentery with bloody stool

Viral Conjunctivitis

Red, irritated eyes due to Heat

Urticaria

Hives related to internal Heat

Pneumonia

Lung infection with fever and cough

Lumps

Epidemic parotitis with swelling

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)

Channels Entered

Lungs Heart Stomach Large Intestine

Parts Used

Flower bud (花蕾 huā lěi)

Dosage & Preparation

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

Standard dosage

6–15g

Maximum dosage

Up to 30–60g in acute Heat-toxin conditions such as severe abscesses or high fever, under practitioner supervision. Larger doses are used in classical formulas for serious infections (e.g., the formula Gui Hua Tang uses 250g, but this is exceptional).

Dosage notes

Use lower doses (6–10g) for mild Wind-Heat conditions such as common cold with sore throat. Use moderate doses (10–15g) for general Heat-clearing in febrile illness and inflammation. Higher doses (15–30g) are appropriate for more serious Heat-toxin conditions such as abscesses, boils, and severe infections. For hot dysentery with blood and pus, a concentrated single-herb decoction at higher dosage (30g or more) can be used. The charcoal-processed form (Jin Yin Hua Tan) has reduced cold properties and adds an astringent, blood-stopping action, making it more suitable for bloody dysentery. The dry-fried form (Chao Jin Yin Hua) has gentler cold properties and is better tolerated by those with sensitive digestion.

Preparation

No special decoction handling required. Jin Yin Hua is added with the main batch of herbs and decocted normally. However, it should not be decocted for excessively long periods, as prolonged boiling can degrade its volatile aromatic compounds and reduce efficacy. A decoction time of about 10–15 minutes is generally sufficient. For topical use, a more concentrated decoction can be applied externally or used as a wash.

Processing Methods

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

Processing method

Stir-fried in a dry pan over low heat until the flower buds turn yellow, then removed and cooled.

How it changes properties

The cold nature is slightly moderated. The dispersing action is reduced while the harmonizing effect on the Stomach is enhanced. This form is gentler on digestion and adds a mild anti-nausea effect.

When to use this form

When the patient has Stomach sensitivity or nausea alongside Heat symptoms. Also used when the strong cold nature of raw Jin Yin Hua might upset digestion.

Common Herb Pairs

These ingredients are traditionally combined with Jin Yin Hua for enhanced therapeutic effect

Lian Qiao
Lian Qiao 1:1 (e.g. Jin Yin Hua 15g : Lian Qiao 15g)

Jin Yin Hua and Lian Qiao (Forsythia fruit) are the most famous herb pair in Heat-clearing medicine. Together, they powerfully clear Heat and resolve toxins while also dispersing Wind-Heat from the body's surface. Jin Yin Hua clears Heat from both the Qi and Blood levels, while Lian Qiao excels at clearing Heart Heat and dispersing clumped toxins. Their combined action is stronger than either herb alone for both exterior Wind-Heat and internal toxic Heat.

When to use: Whenever Wind-Heat colds, flu, or early-stage warm-febrile disease present with fever, sore throat, and headache. Also for any hot, swollen sores or abscesses.

Pu Gong Ying
Pu Gong Ying 1:1 (e.g. Jin Yin Hua 15g : Pu Gong Ying 15g)

Jin Yin Hua and Pu Gong Ying (Dandelion) together create a powerful toxin-clearing combination for sores and infections. Jin Yin Hua is the lead toxin-clearing herb for all types of sores, while Pu Gong Ying specifically targets breast abscesses and has strong anti-inflammatory properties. Together they address internal and external Heat-toxin sores more comprehensively.

When to use: For breast abscesses (mastitis), skin infections, boils, and any Hot-type swelling with redness and pain. Especially indicated for breast-related infections.

Zi Hua Di Ding
Zi Hua Di Ding 2.5:1 (e.g. Jin Yin Hua 9g : Zi Hua Di Ding 3.6g, following Wu Wei Xiao Du Yin proportions)

Jin Yin Hua clears Heat toxins from both the Qi and Blood levels, while Zi Hua Di Ding (Viola) specialises in cooling the Blood and reducing swelling in deep-rooted sores. Together they target stubborn, deep-seated toxic sores and boils more effectively than either herb alone.

When to use: For deep-rooted boils (ding chuang) and stubborn sores that are hard, painful, and deeply embedded. This is the core pairing within Wu Wei Xiao Du Yin.

Huang Qin
Huang Qin 1:1 (e.g. Jin Yin Hua 10g : Huang Qin 10g)

Jin Yin Hua clears Heat and resolves toxins while Huang Qin (Scutellaria root) clears Heat and dries Dampness, particularly in the Lungs and Large Intestine. Together they address Heat-toxin conditions that also involve Dampness, especially intestinal infections.

When to use: For dysentery and intestinal infections with bloody or mucus-filled stool, where both Heat toxins and Damp-Heat are present. Also for Lung Heat with cough.

Key Formulas

These well-known formulas feature Jin Yin Hua in a prominent role

Yin Qiao San 銀翹散 King

The definitive formula for Wind-Heat colds from Wu Jutong's Wen Bing Tiao Bian. Jin Yin Hua serves as co-King with Lian Qiao at equal dosage (30g each in the original), showcasing its core ability to both disperse Wind-Heat from the exterior and clear Heat toxins. This is the formula most people associate with Jin Yin Hua, and it demonstrates the herb's dual action of releasing the exterior while clearing internal Heat.

Wu Wei Xiao Du Yin 五味消毒飲 King

The premier formula for toxic sores and boils from the Yi Zong Jin Jian. Jin Yin Hua leads at the highest dose (9g versus 3.6g for the other four herbs), showcasing its identity as the foremost toxin-clearing herb for sores. This formula best represents its action as the 'sacred herb for sores' and its ability to clear both Qi-level and Blood-level Heat toxins.

Si Miao Yong An Tang 四妙勇安湯 King

A four-herb formula for gangrene and vascular inflammation (from Hua Tuo Shen Yi Mi Chuan), where Jin Yin Hua serves as King at the largest dose (90g in the original). Paired with Xuan Shen, Dang Gui, and Gan Cao, this formula highlights Jin Yin Hua's capacity for heavy-dose, sustained use to clear deep-seated Heat toxins while preserving Qi and Blood. It represents the herb's role in treating severe, chronic toxic Heat conditions.

Qing Ying Tang 清營湯 Assistant

A formula for Heat entering the Ying (nutritive) level from Ye Tianshi's Wen Re Lun. Jin Yin Hua plays an Assistant role here, demonstrating its unique ability to work at the deeper Ying and Blood levels and to 'redirect Heat from the Ying back to the Qi level' (透营转气). This shows a dimension beyond its surface-dispersing action.

Comparable Ingredients

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

Lian Qiao
Jin Yin Hua vs Lian Qiao

Both clear Heat and resolve toxins and are frequently used together. However, Jin Yin Hua is stronger at clearing Heat from the Blood level and is the primary herb for all types of toxic sores (it is called the 'sacred herb for sores'). Lian Qiao is better at clearing Heart Heat and dispersing clumped, nodular swellings and has a stronger ascending, dispersing quality. Jin Yin Hua is sweeter and gentler on the Stomach, while Lian Qiao is more bitter.

Ye Ju Hua
Jin Yin Hua vs Ye Ju Hua

Both clear Heat toxins and treat sores and abscesses. However, Jin Yin Hua is broader in scope: it disperses Wind-Heat, treats warm-febrile disease at multiple stages, and addresses both Qi and Blood level Heat. Ye Ju Hua (Wild Chrysanthemum) is more specifically focused on clearing toxic Heat from sores and has a stronger bitter taste. Ye Ju Hua also has a Liver-clearing action for red, swollen eyes that Jin Yin Hua lacks.

Pu Gong Ying
Jin Yin Hua vs Pu Gong Ying

Both are important herbs for clearing Heat toxins and treating sores. Jin Yin Hua is the broader herb: it treats sores anywhere in the body, disperses Wind-Heat, and works at the Ying (nutritive) level. Pu Gong Ying (Dandelion) has a particular affinity for breast infections and also promotes urination to clear Damp-Heat. For breast abscesses specifically, Pu Gong Ying may be preferred as the lead herb, with Jin Yin Hua in support.

Common Substitutes & Adulterants

Related species and common adulterations to be aware of when sourcing Jin Yin Hua

The most significant substitution issue for Jin Yin Hua is adulteration with Shan Yin Hua (山银花, Mountain Silver Flower), which comes from related but distinct Lonicera species including L. macranthoides, L. hypoglauca, L. confusa, and L. fulvotomentosa. Since the 2005 Chinese Pharmacopoeia separated these into two distinct drug entries, only L. japonica is the legal source of Jin Yin Hua. Shan Yin Hua is significantly cheaper and higher-yielding, creating strong economic incentive for substitution. Key differences: Jin Yin Hua flowers grow in pairs (double flowers) and the calyx tube is covered with fine hairs, while Shan Yin Hua flowers grow in clusters and the calyx tube is smooth (hairless). Shan Yin Hua also contains saponins not found in true Jin Yin Hua, which may pose safety risks in injectable preparations. Their pharmacological properties may differ: some research suggests Shan Yin Hua may have warm rather than cold thermal properties, opposite to genuine Jin Yin Hua.

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

Toxicity Classification

Classical Chinese pharmacopoeia toxicity rating for Jin Yin Hua

Non-toxic

Jin Yin Hua is classified as non-toxic in the Chinese Pharmacopoeia and is listed as a "medicine-food homologous" (药食同源) substance, meaning it is approved for use in both medicinal and food products. It has an excellent safety profile at standard dosages. The main risk is not from toxicity but from inappropriate use: its cold nature can cause gastrointestinal discomfort, nausea, or diarrhea in people with Spleen-Stomach Yang deficiency or when taken in excessive doses over prolonged periods. No specific toxic components have been identified in the flower buds of Lonicera japonica.

Contraindications

Situations where Jin Yin Hua should not be used or requires extra caution

Caution

Spleen and Stomach deficiency Cold (脾胃虚寒): Jin Yin Hua is cold in nature and can further damage the Yang of the Spleen and Stomach, worsening symptoms such as abdominal pain, loose stools, poor appetite, and sensitivity to cold foods. People with chronically weak digestion who tend toward cold should avoid this herb.

Caution

Qi deficiency with sores producing thin, clear pus (气虚疮疡脓清): When abscesses or sores discharge thin, watery, clear fluid rather than thick yellow pus, this indicates Qi deficiency rather than excess Heat-toxin. Using Jin Yin Hua in this situation can further weaken the body's Qi and impair healing.

Caution

Wind-Cold pattern colds and flu: Jin Yin Hua disperses Wind-Heat and should not be used for Wind-Cold presentations (chills greater than fever, clear nasal discharge, absence of sore throat), as its cold nature would worsen the condition.

Caution

Prolonged or excessive use without Heat signs: Long-term consumption of Jin Yin Hua (including as a daily tea) without actual Heat symptoms can gradually injure Spleen and Stomach Yang, leading to digestive weakness, fatigue, and diarrhea.

Special Populations

Important considerations for pregnancy, breastfeeding, and pediatric use

Pregnancy

Generally considered safe at standard doses during pregnancy. Jin Yin Hua is non-toxic, has no known abortifacient or uterine-stimulating properties, and is widely used in China even during pregnancy for acute febrile conditions. However, because of its cold nature, prolonged or high-dose use should be avoided in pregnant women with Spleen-Stomach deficiency Cold, as it may cause digestive upset or diarrhea. Use during pregnancy should be guided by a qualified practitioner.

Breastfeeding

No specific safety concerns have been documented for breastfeeding mothers at standard doses. Jin Yin Hua is classified as a medicine-food homologous substance and is commonly used in postpartum settings in China, including for treating mastitis (breast abscess). Its cold nature means that prolonged or excessive use could theoretically affect the mother's digestion and, by extension, milk quality. Standard short-term use for acute Heat conditions is generally considered compatible with breastfeeding.

Children

Jin Yin Hua is widely used in pediatric practice in China and is generally considered safe for children. It is a common ingredient in children's formulas for fever, sore throat, and skin rashes (including measles). Dosage should be reduced proportionally based on age and body weight, typically one-third to one-half of the adult dose for young children. Jin Yin Hua baths are a traditional home remedy for children's heat rash (痱子) and eczema. Intravenous preparations containing Jin Yin Hua have been used in clinical settings for children for up to 7 days. As with adults, avoid prolonged use in children with weak digestion or tendency toward loose stools.

Drug Interactions

If you are taking pharmaceutical medications, be aware of these potential interactions with Jin Yin Hua

No serious drug interactions have been firmly established in clinical literature. However, the following theoretical considerations apply based on the herb's known pharmacological properties:

  • Anticoagulant and antiplatelet medications: Jin Yin Hua's chlorogenic acid and caffeic acid derivatives may have mild antiplatelet effects. Concurrent use with warfarin, heparin, or other anticoagulants should be monitored.
  • Immunosuppressant medications: As an immune-modulating herb with demonstrated effects on immune function, Jin Yin Hua may theoretically counteract immunosuppressive therapy. Caution is advised in transplant patients or those on immunosuppressants.
  • Drugs metabolized by cytochrome P450 enzymes: Chlorogenic acid has been shown in some preclinical studies to influence CYP enzyme activity. Patients on medications with narrow therapeutic windows (e.g., cyclosporine, theophylline) should exercise caution.

Overall, Jin Yin Hua has a very favorable safety profile and clinically significant drug interactions are rare, but any concurrent use with pharmaceutical medications should be discussed with a healthcare provider.

Dietary Advice

Foods and dietary considerations when taking Jin Yin Hua

While taking Jin Yin Hua, avoid cold and raw foods, iced drinks, and greasy or heavy foods, as these can compound the herb's cold nature and further burden the Spleen and Stomach. Favor light, easily digestible, warm-cooked meals. Avoid alcohol, spicy, and overly rich foods during acute Heat conditions, as these can counteract the herb's Heat-clearing action. Jin Yin Hua is commonly prepared as a simple tea or combined with rock sugar for palatability.

Botanical Description

Physical characteristics and morphology of the Jin Yin Hua source plant

Lonicera japonica Thunb. (Japanese honeysuckle) is a vigorous, semi-evergreen twining vine of the Caprifoliaceae (honeysuckle) family that can climb up to 10 metres or more in trees and shrubs. Young stems are slightly reddish and covered with fine hairs, while older stems turn brown with peeling bark and are often hollow inside.

The leaves are opposite, simple, oval to oblong-ovate, 3–8 cm long and 2–3 cm wide, dark green above and paler beneath. The sweetly fragrant flowers appear in pairs from the leaf axils from April to June (with possible repeat blooming in autumn). Each flower is tubular with a distinctive two-lipped shape. They open white or sometimes tinged with pink, then gradually turn yellow over two to three days, so that white (silver) and yellow (gold) flowers appear on the vine simultaneously, giving rise to the name "Gold-Silver Flower." The fruit is a small, round, blue-black berry about 6–7 mm in diameter, ripening in October to November.

The plant grows readily on hillsides, in scrub, along roadsides, and at forest edges, at altitudes up to 1,500 metres. It adapts to a wide range of soils and climates, and its vigorous growth habit has made it an invasive species in some regions outside its native East Asian range.

Sourcing & Harvesting

Where Jin Yin Hua is sourced, when it's harvested or collected, and how to assess quality

Harvesting season

Late spring to early summer (May to June), just before the flower buds open, when they are swollen and white but not yet blooming. A second, smaller harvest may occur in mid to late June. The optimal moment is when the upper part of the bud has swelled and changed from green to white but has not yet opened.

Primary growing regions

The premier producing regions (道地药材) for Jin Yin Hua are in northern China. Shandong Province (especially Linyi/Pingyi County, known as the "Home of Jin Yin Hua in China") produces the largest volume and is considered the primary dao di origin, with Pingyi County handling approximately 80% of the national trade volume. Henan Province (especially Fengqiu County, producing "Mi Yin Hua" or "Nan Yin Hua") is historically renowned for highest chlorogenic acid content (4–6%) and excellent quality. Hebei Province (Julu County) is another major production area. These three provinces form the core "three major production regions" for authentic Jin Yin Hua. The plant also grows widely across central, eastern, and southwestern China, but material from Shandong, Henan, and Hebei is considered superior in quality and therapeutic effect.

Quality indicators

The best quality Jin Yin Hua consists of tightly closed, plump flower buds (not yet opened) that are yellowish-white or greenish-white in color, densely covered with fine soft hairs. The buds should be rod-shaped (棒状), thicker at the top and thinner at the base, slightly curved, about 2–3 cm long. The aroma should be distinctly fresh, sweet, and fragrant. The taste is light with a slight bitterness. Buds that have fully opened into flowers are considered lower grade. When stored too long, the color darkens. Avoid material that is dark brown, blackened, broken into fragments, or has a musty smell. Baked (烘干) product tends to be greenish-white; sun-dried (晒干) product tends to be pale yellow to white. The best commercial grades have minimal open flowers, few stems or leaves, and no insect damage or mold.

Classical Texts

Key passages from the classical Chinese medical texts that describe Jin Yin Hua and its therapeutic uses

《名医别录》(Supplementary Records of Famous Physicians, ~500 CE)

Listed Jin Yin Hua (under the name 忍冬, Ren Dong) as a "superior grade" (上品) herb, indicating it was considered safe for long-term use and beneficial to overall health.

《本草纲目》(Ben Cao Gang Mu, Li Shizhen, 1590)

Original: 「花初开者,蕊瓣俱色白,经二三日,则色变黄,新旧相参,黄白相映,故名金银花。」

Translation: "When the flowers first open, the petals and stamens are all white. After two or three days, they turn yellow. The old and new flowers intermingle, yellow and white reflecting each other, hence the name Gold-Silver Flower."

Li Shizhen further noted its ability to treat: 「一切风湿气,及诸肿毒、痈疽疥癣、杨梅诸恶疮。散热解毒。」 ("All Wind-Damp conditions, as well as various swellings, toxins, abscesses, scabies, and all manner of malignant sores. It disperses Heat and resolves toxin.")

《本经逢原》(Ben Jing Feng Yuan, Zhang Lu, Qing Dynasty)

Original: 「解毒去脓,泻中有补,痈疽溃后之圣药。」

Translation: "It resolves toxin and expels pus, and within its draining action there is supplementation. It is the supreme herb for abscesses that have already ulcerated."

《本草正》(Ben Cao Zheng, Zhang Jiebin, Ming Dynasty)

Original: 善于化毒,毒未成者能散,毒已成者能溃。

Translation: "It excels at transforming toxin. When the toxin has not yet formed [an abscess], it can disperse it; when the toxin has already formed, it can cause it to drain."

Historical Context

The history and evolution of Jin Yin Hua's use in Chinese medicine over the centuries

Jin Yin Hua has one of the longest documented histories of any Chinese medicinal herb, with over 1,500 years of recorded use. It was first documented under the name 忍冬 (Ren Dong, "enduring winter") in the Ming Yi Bie Lu (Supplementary Records of Famous Physicians, approximately 500 CE), where it was classified as an upper-grade herb. The name Ren Dong refers to the plant's remarkable ability to remain semi-evergreen through winter, its leaves "enduring" the cold season.

The name "Jin Yin Hua" (Gold-Silver Flower) first appeared in Li Shizhen's Ben Cao Gang Mu (1590), referring to the way the flowers transition from white (silver) to yellow (gold) over several days. The vine also bears the folk name "Yuanyang Teng" (鸳鸯藤, Mandarin Duck Vine), because its flowers always appear in pairs from a single stalk, resembling an inseparable couple. Before the Song Dynasty, the medicinal part used was primarily the stem and leaves; it was during the Ming and Qing Dynasties that the flower buds became the preferred medicinal form, and the flower (Jin Yin Hua) and stem (Ren Dong Teng) were formally distinguished as separate medicinal substances.

Jin Yin Hua rose to great prominence in the Wen Bing (Warm Disease) school of the Qing Dynasty. Wu Jutong's Wen Bing Tiao Bian (1798) placed it as the chief herb in Yin Qiao San, one of the most widely used formulas in all of Chinese medicine for the early stages of febrile illness. It has been called "the penicillin of Chinese medicine" (中药之中的青霉素) for its broad anti-infectious applications. During the 2003 SARS epidemic and the 2009 H1N1 influenza outbreak, Jin Yin Hua was among the most recommended Chinese herbs for prevention and treatment, dramatically increasing market demand. It is now found in over 200 Chinese patent medicines, including the Shuanghuanglian, Yinhuang, and Yinqiao product lines.

Modern Research

3 published studies investigating the pharmacological effects or clinical outcomes of Jin Yin Hua

1

Systematic Pharmacology Review of Lonicerae Japonicae Flos and Lonicerae Flos (2015)

Li Y, Cai W, Weng X, Li Q, Wang Y, Chen Y, Zhang W, Yang Q, Guo Y, Zhu X, Wang H. Evidence-Based Complementary and Alternative Medicine, 2015, Article 905063.

This systematic review examined the chemical constituents and pharmacological actions of Jin Yin Hua. The review found that the herb's main active compounds (chlorogenic acid, luteolin, and other flavonoids) demonstrate broad antibacterial, antiviral, anti-inflammatory, antioxidant, and immunomodulatory activities, providing a modern pharmacological basis for its traditional heat-clearing and detoxifying uses.

PubMed
2

Ethnopharmacology, Phytochemistry, and Pharmacology Review of Lonicera japonica (2020)

Shang X, Pan H, Li M, Miao X, Ding H. Journal of Ethnopharmacology, 2011, 138(1):1-21.

A comprehensive review covering the traditional uses, phytochemistry, and pharmacological evidence for L. japonica. Over 140 chemical compounds have been isolated from the plant. The review confirmed significant antibacterial, antiviral, anti-inflammatory, hepatoprotective, and antitumor activities in preclinical studies, supporting its traditional applications for infectious and inflammatory conditions.

PubMed
3

Systematic Review of Lonicerae Japonicae Flos: A Significant Food and Traditional Chinese Medicine (2022)

Zheng S, Liu S, Hou A, Wang S, Na Y, Hu J, Jiang H, Yang L. Frontiers in Pharmacology, 2022, 13:1013992.

This systematic review examined L. japonica as both food and medicine, covering its chemical composition, quality control, and biological activities. The authors highlighted chlorogenic acid and luteolin as key quality markers, and reviewed evidence for anti-inflammatory, antiviral, antibacterial, antioxidant, and metabolic-regulating effects.

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.