Forsythia, a name in traditional Chinese medicine. It refers to the dried fruit of Forsythia suspensa (Thunb.) Vahl, a plant in the genus Forsythia of the Oleaceae family. It has the effects of clearing heat and detoxifying, reducing swelling and dispersing nodules, and dispersing wind-heat.It is primarily used to treat boils and abscesses, scrofula, mastitis, erysipelas, wind-heat common cold, the early stages of warm diseases, warm-heat invading the营 (ying) level, high fever with thirst, mental confusion accompanied by skin rashes, and painful, scanty urination due to heat.
Forsythia
Forsythia, a name in traditional Chinese medicine. It refers to the dried fruit of Forsythia suspensa (Thunb.) Vahl, a plant in the genus Forsythia of the Oleaceae family. It has the effects of clearing heat and detoxifying, reducing swelling and dispersing nodules, and dispersing wind-heat.It is primarily used to treat boils and abscesses, scrofula, mastitis, erysipelas, wind-heat common cold, the early stages of warm diseases, warm-heat invading the营 (ying) level, high fever with thirst, mental confusion accompanied by skin rashes, and painful, scanty urination due to heat.
Chinese Name : 连翘
Latin Name : Forsythiae Fructus
Aliases : Hanlianzi, Daqiaozhi, Kongqiao, Kongke, Luoqiao
Authentic Producing Area : Shanxi, Henan, Shaanxi, Hubei, Shandong
Nature, Flavor & Meridian Tropism : Bitter in taste, slightly cold in nature; enters the Lung, Heart, and Small Intestine meridians
Benefits & Efficacy
Benefits
Clears heat and detoxifies; reduces swelling and disperses nodules; disperses wind-heat.
Indications
Boils and abscesses, scrofula, mastitis, erysipelas, wind-heat common cold, early stage of warm diseases, warm-heat invading the营 (ying) level, high fever with thirst, mental confusion with skin rashes, and painful, scanty, and burning urination.
Usage and Dosage
Internal use: Decocted, 6–15 g; or incorporated into pills or powders.
Precautions
Not suitable for patients with spleen-stomach deficiency-cold or those with clear pus due to qi deficiency.
Chemical Constituents
This product primarily contains lignan compounds (forsythoside, forsythoside aglycone, (R)-abietol, (R)-abietol glucoside); Forsythoside A, Forsythol glycosides A, C, D, and E; flavonoids (rutinoside);triterpenoids (betulinic acid, oleanolic acid, and ursolic acid).
Pharmacological Actions
This product exhibits antimicrobial, antipyretic, anti-inflammatory, and antioxidant effects.
Relevant Discussions
1. *Shennong’s Classic of Materia Medica*: “It treats fever and chills, scrofula, scrofulous nodules, abscesses, malignant sores, goiters, internal heat, and poisonous insect bites.”
2. *Zhenzhu Nang*: “Forsythia has three uses: first, to clear pathogenic heat from the Heart Meridian; second, to eliminate various types of heat in the Upper Jiao; and third, to serve as a miraculous remedy for skin ulcers.”
Applications
Clinical Applications
1. To treat sores, abscesses, and toxic swellings, it is commonly used in combination with detoxifying and anti-edematous herbs such as honeysuckle, dandelion, and wild chrysanthemum; if the sores or abscesses are red and swollen but have not yet ruptured, it is often combined with manchurian armadillo shell and soapberry thorns, as in the Modified Disinfecting Decoction (*True Explanation of Surgery*);If the ulcer has begun to discharge pus and is red, swollen, and ulcerated, it is often combined with Peony Bark (Mudanpi) and Trichosanthes Root (Tianhuafen), as in the Forsythia Detoxifying Decoction (from *Comprehensive Treatise on Surgical Diseases*); to treat stagnation of phlegm-fire and scrofula or phlegm nodules, it is often combined with Summer Deadgrass (Xiagucao), Zhejiang Fritillary Bulb (Zhebeimu), Scrophularia Root (Xuanshen), and Oyster Shell (Muli), among others.
2. For treating external invasion by wind-heat or the early stages of warm diseases, characterized by headache, fever, thirst, and sore throat, it is often combined with Honeysuckle (Jin Yin Hua), Peppermint (Bo He), and Burdock Seed (Niu Bang Zi), as in the Yinqiao Powder (from *Treatise on the Differentiation of Warm Diseases*);To treat warm-heat diseases where heat has invaded the pericardium, presenting with high fever and mental confusion, it is combined with Forsythia fruit, Ophiopogon tuber, and Lotus seed heart, as in the Qinggong Decoction (*Treatise on the Differentiation of Warm Diseases*); to treat conditions where heat has invaded the营血 (ying-blood) layer, presenting with a crimson tongue, mental confusion, restlessness, fever, and maculopapular rashes, it is used in combination with Water Buffalo Horn, Raw Rehmannia, and Honeysuckle, as in the Qingying Decoction (*Treatise on the Differentiation of Warm Diseases*).
3. For difficulty urinating or painful, scanty urination caused by stagnation of damp-heat, it is often combined with Plantain Seed, White Reed Root, Bamboo Leaf, and Akebia Stem, as in the Rusheng Powder (from *A Clear Illumination of the Origins and Course of Miscellaneous Diseases*).
Related Compatibility
1. Forsythia combined with Zhebei Mother-of-Pearl: Forsythia excels at clearing heat, eliminating toxins, reducing swelling, and dispersing nodules; Zhebei Mother-of-Pearl excels at clearing heat, transforming phlegm, relieving stagnation, and dispersing nodules. When used together, these two herbs synergistically clear heat, eliminate toxins, reduce swelling, transform phlegm, soften hardness, and disperse nodules. This combination is suitable for scrofula, phlegm nodules, and goiters caused by stagnation of phlegm-fire, as well as wheezing and coughing due to phlegm-heat stagnation in the lungs.
2. Forsythia combined with Gardenia: Forsythia is light, clear, and ascending; it excels at dispersing heat in the Upper Jiao, purging heart fire, expelling toxins, and dispersing blood stasis and qi stagnation in various meridians. By clearing heat, detoxifying, reducing swelling, and dispersing nodules, it is known as the “sacred herb for skin ulcers”;Gardenia is bitter and cold in nature, with a descending action; it excels at purging fire pathogens from the Three Jiao, clearing the heart to relieve restlessness, cooling the blood, and detoxifying. It is an essential herb for treating feverish conditions characterized by mental agitation and restlessness.When used in combination, the effects of cooling the blood, detoxifying, clearing the heart, and relieving restlessness are enhanced. This formula is indicated for high fever and mental confusion caused by heat invading the pericardium in warm diseases; restlessness, dark urine, and mouth and tongue sores due to heat in the Heart Meridian; and heat-toxin sores and ulcers.
Medicinal Identification
1. Forsythia and Honeysuckle: Both herbs excel at clearing heat and detoxifying, while also dispersing wind-heat.They are often used in combination for conditions such as exogenous wind-heat, the early stages of warm diseases, and heat-toxin sores and abscesses. However, Forsythia has a stronger ability to clear the heart and eliminate toxins, and excels at resolving abscesses and dispersing nodules; it is a premier herb for treating skin ulcers and is also used for scrofula and phlegm nodules. Honeysuckle, on the other hand, is particularly effective at dispersing exterior heat, and when stir-fried and charred, it excels at cooling the blood and stopping dysentery, making it suitable for treating heat-toxin bloody dysentery.
2. Purified Forsythia and Forsythia Heart: Both can clear heat, resolve toxins, dissipate abscesses, and disperse nodules, and are primarily used to treat conditions such as abscesses, swellings, skin infections, and the early stages of warm diseases.However, purified forsythia is bitter, cold, light, and ascending; it can disperse pathogenic heat from both the exterior and interior to resolve exterior syndromes and clear heat, while also possessing the ability to resolve abscesses and disperse nodules. It is primarily used to treat abscesses, swellings, and toxic sores; scrofula and phlegm-nodules; exogenous wind-heat; and the early stages of warm diseases.In contrast, Forsythia Heart specifically enters the Heart and Pericardium meridians, primarily clearing Heart fire and removing heat from the Pericardium; therefore, it is frequently used for warm diseases where heat has invaded the Pericardium, high fever with mental confusion and delirium, and painful, scanty urination due to heat.
Related Medicines
Jian’er Qingjie Liquid, Pediatric Stomach-Clearing and Cough-Relieving Oral Liquid, Compound Shuanghua Granules, Yinqiao Shuangjie Suppositories, Lianqiao Baidu Pills, Shuangqing Oral Liquid.
Related Prescriptions
Five-Spice Forsythia Decoction (*Qianjin Fang*), Liangge Powder (*Heji Jufang*), Forsythia Powder (*Wai Ke Jing Yi*), and Forsythia Decoction (*Shanghan Baoming Ji*).
Notes
Patients requiring treatment with traditional Chinese medicine should first consult a licensed TCM hospital, where a TCM practitioner will conduct a professional diagnosis and prescribe the appropriate herbal formula.
Processing & Preparation
Harvesting & Processing
Harvest in autumn when the fruits are just ripening and still green; remove impurities, steam until tender, and sun-dry; this is commonly known as “green forsythia” (Qingqiao). Harvest when the fruits are fully ripe, sun-dry, and remove impurities; this is commonly known as “ripe forsythia” (Laoqiao). After harvesting green forsythia, steam it immediately until tender, sun-dry it, and sift out the seeds to obtain “forsythia seeds” (Lianqiao Xin) for use.
Processing Methods
1. Forsythia: Take the raw herb, remove impurities and fruit stalks, rinse thoroughly with running water, and sun-dry. Sift out any loose seeds and ash residue.
2. Cinnabar-coated Forsythia: Take the cleaned Forsythia, moisten it with water, place it in a container, and stir evenly. Sprinkle cinnabar powder evenly over it and mix lightly, then remove and air-dry. Use 2 kg of cinnabar powder for every 100 kg of Forsythia.
3. Charred Forsythia: Place the cleaned Forsythia in a pot and roast over high heat until it turns 70–80% black. Remove and allow to cool completely.
Storage Methods
Store in a dry container in a well-ventilated, dry place. Ensure the charred Forsythia is allowed to cool promptly to prevent reignition.
Crude Drug Identification
Properties of Crude Drugs
This product is oblong to ovate in shape, slightly flattened, 1.5–2.5 cm long, and 0.5–1.3 cm in diameter. The surface features irregular longitudinal wrinkles and numerous raised small spots, with one distinct longitudinal groove on each side. The apex is sharply pointed, and the base has a small fruit stalk or one that has already fallen off. Young Forsythia fruits rarely split open; their surface is greenish-brown with fewer raised grayish-white spots;hard in texture; contains numerous seeds that are yellowish-green, slender, and winged on one side. Mature Forsythia splits open from the apex or splits into two valves; the surface is yellowish-brown or reddish-brown, while the inner surface is mostly light yellowish-brown, smooth, and has a single longitudinal septum; brittle in texture; the seeds are brown and mostly shed. It has a faintly fragrant odor and a bitter taste.
Properties of Processed Slices
1. Forsythia: See the “Characteristics of the Medicinal Material” section.
2. Vermilion Forsythia: Resembles Forsythia, with a trace of fine cinnabar powder adhering to the surface.
3. Charred Forsythia: Resembles Forsythia, with a black surface.
Botanical Information
Botanical Classification
Forsythia, a plant of the genus Forsythia in the family Oleaceae.
Morphological Characteristics
Deciduous shrub. Twigs are earthy yellow or grayish brown, slightly quadrangular, with sparse lenticels; internodes are hollow, and nodes have solid pith.Leaves are usually simple, or 3-lobed to 3-pinnate; petioles are 0.8–1.5 cm long and glabrous; leaf blades are ovate, broadly ovate, or elliptic-ovate to elliptic, 2–10 cm long and 1.5–5 cm wide, with an acute apex, a rounded to cuneate base, and sharp or coarse serrations along the margin except at the base.Flowers are usually solitary or borne in clusters of 2 to several in the leaf axils, blooming before the leaves emerge; the pedicel is 5–6 mm long; the calyx is green, with 4 lobes that are oblong or oblong-elliptic, ciliate at the margins; the corolla is yellow, with 4 lobes that are obovate-elliptic, 1.2–2 cm long and 6–10 mm wide;there are 2 stamens, attached at the base of the corolla tube; the style is slender and elongated, with a 2-lobed stigma. The capsule is ovoid, 2-chambered, 1.2–2.5 cm long, 0.6–1.2 cm wide, with a beak-like, gradually tapering apex and a surface sparsely covered with tubercles; the fruit stalk is 0.7–1.5 cm long. Flowering occurs from March to April, and fruiting from July to September.
Distribution Area
Distributed in Hebei, Shanxi, Shaanxi, Gansu, Shandong, Jiangsu, Anhui, Henan, Hubei, Sichuan, and other regions.
Growth Habits
It prefers a warm, humid climate. It is highly adaptable, tolerant of cold and poor soil. It thrives in full sun. It is not particular about soil type and can grow in both humus-rich soil and sandy gravelly soil.
Propagation Methods
Propagated by seeds, layering, and cuttings.
Cultivation Techniques
1. Seed Propagation: Sow seeds in late March to early April in northern regions, and in early to mid-March in southern regions. Before sowing, soak the seeds in warm water at 50°C for 10–12 hours; remove, air-dry, and then sow. Alternatively, stratify the seeds in moist sand from September to October and sow the following spring to improve germination rates.Space rows about 30 cm apart and cover seeds with 1–2 cm of soil. Cover with straw to keep the soil moist. Thin the seedlings when they reach 15–20 cm in height, spacing them 10 cm apart, and apply manure or livestock slurry as a top dressing. Transplant in the fall of the same year or in early spring of the following year.
2. Layering Propagation: Before the rainy season begins, bend a long, current-year shoot from the mother plant downward and bury it 3–4 cm deep in the soil near the mother plant. Water thoroughly and keep the area consistently moist; transplant in early spring of the following year.
3. Propagation by Cuttings: After the leaves fall in the fall or before bud break in early spring, select healthy 1- to 2-year-old branches. Cut sections approximately 20 cm long, leaving only the top 2–3 leaves and removing all others.Plant them in a seedbed with a spacing of 25 cm × 15 cm, leaving 1–2 nodes exposed above the soil surface. Water immediately after planting and keep the soil consistently moist. Begin fertilizing 20–30 days after the cuttings have taken root, applying fertilizer 3–4 times; the plants can be transplanted in the same year.When transplanting, dig holes spaced 2 m × 1.5 m apart and apply a small amount of well-rotted compost or manure. Ensure the roots spread out naturally during planting, then cover with soil and firm it down. Forsythia has a very low fruit-setting rate; to improve this, plants with long styles and those with short styles must be interplanted during transplanting.
Pest and Disease Control
Diseases include damping-off; pests include cutworms and others.