Angelica sinensis (Apiaceae) Dong Quai, Dang Gui, Female Ginseng

Angelica sinensis is a fragrant perennial herb of the parsley family, native to the cold, damp mountain slopes of northwestern China at elevations between 2,200 and 3,000 meters. For over two millennia, its dried root has held a position of singular importance in traditional Chinese medicine, prescribed primarily for gynecological complaints and conditions of blood deficiency. The plant is often called "female ginseng" in Western herbal literature, a name that reflects its reputation for regulating menstruation, easing menstrual cramps, and supporting postpartum recovery. Unlike many herbs whose traditional uses remain confined to regional practice, Dong Quai has achieved global recognition as a dietary supplement and is approved by China's National Health Commission for use in health food raw materials. Modern research has identified more than 70 chemical constituents in the root, with phthalides, ferulic acid derivatives, and polysaccharides emerging as the principal bioactive fractions.

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1. Taxonomic Insights

Species: Angelica sinensis (Oliv.) Diels

Family: Apiaceae (Umbelliferae; Parsley Family)

Genus: Angelica

Basionym: Angelica polymorpha Maxim. var. sinensis Oliv.

Synonyms: Angelica polymorpha var. sinensis Oliv.

Taxonomic Notes: The species was first described by Daniel Oliver as a variety of Angelica polymorpha, and later elevated to species rank by Ludwig Diels. Three Angelica species are cultivated medicinally in East Asia: A. gigas in Korea (Chamdangui), A. acutiloba in Japan (Tōki), and A. sinensis in China (Danggui). These species differ significantly in their chemical constituents and therapeutic efficacies, though they are used for similar purposes in their respective traditions.

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Botanical Description

Angelica sinensis is a perennial herbaceous plant that typically reaches 0.4 to 1 meter in height, though under favorable conditions it may grow to 2 meters. The root is cylindrical, branched, with numerous fleshy fibrous roots, yellowish-brown in color, and possessed of a strong, distinctive aroma.

Key Identification Features:

The stem is erect, greenish-white or tinged with purple, marked by deep longitudinal grooves, and smooth or glabrous. The leaves are ternate to tripinnate, with petioles 3 to 11 centimeters long, their bases enlarged into tubular membranous sheaths that are either purple or green. Basal and lower stem leaves have an ovate outline, 8 to 18 centimeters long and 15 to 20 centimeters wide, with three pairs of leaflets. The terminal leaf segments are ovate or ovate-lanceolate, 1 to 2 centimeters long and 5 to 15 millimeters wide, with two or three shallow lobes and incised-serrate margins tipped with sharp points. The lower leaf surface and margins bear sparse papillose white hairs.

The inflorescence is a compound umbel, with peduncles 4 to 7 centimeters long, densely covered with fine soft hairs. Nine to 30 umbellules radiate from each umbel, with 13 to 36 flowers per umbellule. The flowers are white, with five petals that are long-ovate, narrowly pointed at the apex, and inflexed. Flowering occurs in June and July. The fruit is elliptic to ovate, 4 to 6 millimeters long and 3 to 4 millimeters wide, with dorsal ribs that are linear and raised, and lateral ribs that form broad, thin wings equal to or slightly wider than the body of the fruit. The wing margins are pale purple. Fruiting occurs from July to September.

Distribution: Native to China, with primary cultivation in southeastern Gansu Province, particularly Min County, which accounts for approximately 70 percent of China's total production. Secondary production areas include Yunnan, Sichuan, Shaanxi, and Hubei provinces. The species has been introduced to cultivation trials in other regions, including Korea, but grows poorly at low altitudes and requires high-elevation, cool, damp conditions for satisfactory root yield.

Conservation Status: Not assessed by the IUCN. The species is extensively cultivated and not considered threatened.

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Etymology

The generic name Angelica derives from the Latin "angelus" (angel), referring to the plant's reputed medicinal virtues. The specific epithet sinensis means "of China." The Chinese name Danggui (当归) is traditionally interpreted as meaning "should return," a reference to the herb's ability to bring the blood back to its proper balance and to restore the body to health. The common English name "Dong Quai" is a transliteration of the Chinese name as pronounced in Cantonese.

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2. Common Names

Scientific Name: Angelica sinensis | English: Dong Quai, Dang Gui, Chinese Angelica, Female Ginseng, Tang Kuei | Chinese: 当归 (Dāng Guī) | Japanese: Tōki | Korean: Tanggwi | Thai: Kot Chiang (โกฐเชียง) | Danish: Kinesisk Kvan | French: Angélique de Chine | German: Chinesischer Engelwurz

Chinese Regional Names: Qin Gui (秦归) in Gansu and Sichuan, Yun Gui (云归) in Yunnan

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3. Related Species in the Apiaceae

Angelica sinensis belongs to the Apiaceae, a family that includes many important medicinal and culinary plants, from carrots and parsley to fennel and coriander.

Angelica gigas (Korean Angelica, Chamdangui): The species cultivated in Korea for medicinal use. It differs from A. sinensis in its chemical constituents and is reported to have different efficacious properties. It grows successfully at lower altitudes than A. sinensis and produces higher root yields.

Angelica acutiloba (Japanese Angelica, Tōki): The species cultivated in Japan. Like A. gigas, it is adapted to lower elevations and has a distinct phytochemical profile.

Angelica archangelica (Garden Angelica): A European species used traditionally for digestive complaints and as a flavoring agent. It shares some aromatic and carminative properties with A. sinensis but differs in its medicinal applications.

Angelica dahurica (Bai Zhi): Another Chinese medicinal Angelica, used primarily for headache and nasal congestion rather than blood-related conditions.

The Apiaceae family is characterized by aromatic essential oils, coumarins, and furanocoumarins. Angelica species are distinguished by their content of phthalides, which contribute to their distinctive aroma and much of their pharmacological activity.

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4. Medicinal Uses: Summary of Primary and Secondary Actions

The medicinal applications of Angelica sinensis center on blood and gynecological health, with broader effects on inflammation, immunity, and organ protection.

Primary Actions:

Blood-Replenishing and Hematopoietic: The most fundamental traditional use. Modern research has identified phthalide compounds and ferulic acid derivatives as the primary blood-replenishing constituents, with ferulic acid, 4,8-dihydroxyacetophenone, and vanillic acid showing hemoglobin-promoting effects of 40.6 percent, 33.4 percent, and 37.8 percent respectively in cell models. Angelica sinensis polysaccharides (ASP) also demonstrate hematopoietic activity, with studies showing protection against chemotherapy-induced myelosuppression.

Uterine Tonic and Menstrual Regulator: Traditional use for irregular menstruation, dysmenorrhea, amenorrhea, and premenstrual syndrome. The herb is believed to promote blood flow to the reproductive organs, regulate uterine contractions, and alleviate menopausal symptoms.

Anti-Inflammatory: Phthalide dimers and ferulic acid derivatives demonstrate significant anti-inflammatory activity. The most potent phthalide dimer, compound 9 (angesilide I), inhibits nitric oxide production with an IC50 of 425 nanomolar and significantly decreases IL-1β and IL-6 transcription. Wine-processed A. sinensis shows superior anti-inflammatory effects compared to the unprocessed herb, acting through inhibition of Akt/NF-κB and STATs signaling pathways.

Antioxidant: Phenolic compounds, particularly ferulic acid, confer significant free radical scavenging capacity. Water and methanol extracts demonstrate antioxidant activity in various assay systems.

Immunomodulatory: Polysaccharides from A. sinensis demonstrate immunomodulatory effects, including complement-activating activity and enhancement of hematopoietic recovery after chemotherapy.

Secondary Actions:

Neuroprotective: Z-ligustilide has demonstrated neuroprotective effects in animal models. The herb is used in traditional medicine for dizziness, headache, and cognitive complaints.

Hepatoprotective: Aqueous extracts demonstrate liver-protective effects in animal models.

Cardiovascular: Coumarins act as vasodilators and antispasmodic agents. The herb has been used for cardiovascular diseases and peripheral blood flow problems.

Antidiabetic: ASP demonstrates hypoglycemic activity in animal studies.

Antitumor: Polysaccharides show inhibitory effects on sarcoma 180, Ehrlich ascitic cancer, and leukemia L1210 in mice, as well as inhibition of human hepatocellular carcinoma cell proliferation.

Radioprotective: ASP demonstrates radioprotective activity in animal studies.

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Medicinal Parts

Root: The dried root is the sole medicinal part used in traditional and modern practice. The root is divided commercially into three sections: the head (Guitou), the main body (Guishen), and the tail (Guiwei). Ferulic acid content shows site specificity, with the highest concentration in the tail section, followed by the body, then the head.

Processing: The root is used either unprocessed (sheng) or processed with yellow rice wine (jiu chao). Wine processing alters the chemical composition and enhances certain bioactivities, particularly anti-inflammatory effects, while reducing others.

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5. Phytochemistry

The chemical composition of Angelica sinensis is complex and has been extensively studied. More than 70 compounds have been identified across several structural classes, with phthalides, organic acids, and polysaccharides being the most pharmacologically significant.

5.1 Phthalides

Phthalides are the characteristic volatile constituents of Dong Quai and are considered among the primary bioactive markers. They were among the first compounds isolated from the herb.

Z-Ligustilide: The dominant phthalide and the compound used as the primary quality marker in pharmacopoeial standards. The Hong Kong Chinese Materia Medica Standards require not less than 0.60 percent Z-ligustilide in dried root material. It demonstrates anti-inflammatory, neuroprotective, and vasodilatory activities.

E-Ligustilide: A geometric isomer of Z-ligustilide, present in lower concentrations.

Butylidenephthalide and Senkyunolide A: Additional monomeric phthalides with anti-inflammatory and antispasmodic properties.

Phthalide Dimers: A structurally diverse class of compounds with complex polycyclic skeletons. Recent isolation work has identified nine pairs of phthalide dimers, named angesilides A through I, with bridged, fused, and spiro ring systems. These dimers show significant anti-inflammatory activity, with the most potent compound exhibiting an IC50 of 425 nanomolar for nitric oxide inhibition. Other known dimers include levistolide A, angelbisabol A and B, and various diligustilides.

New Phthalides (2025): Recent isolation has yielded three new phthalide compounds: 7-(2-butyrylbenzoyl)senkyunolide I, 2-propyl-6,7-dioxolanesenkyunolide H, and 6′,7′-dicarboxyl-wallichilide, along with 45 known compounds. Several of these show potent nitric oxide inhibition with IC50 values in the low micromolar range (3.23 to 3.93 micromolar).

5.2 Organic Acids

Ferulic Acid: The first efficacious component isolated from Dong Quai and one of the most studied. It is a phenolic acid with antioxidant, anti-inflammatory, and blood-replenishing activities. Ferulic acid content varies by root section, with the highest concentration in the tail.

Vanillic Acid: A phenolic acid with hemoglobin-promoting activity (37.8 percent promotion rate in cell models).

Succinic Acid: Present in the main root body section.

Other Organic Acids: Nicotinic acid, palmitic acid, and n-tetracosanoic acid are also present in varying distributions.

5.3 Polysaccharides

Angelica sinensis Polysaccharide (ASP): A water-soluble polysaccharide complex comprising glucose, galactose, arabinose, rhamnose, trehalose, xylose, and galacturonic acid, with molecular weights ranging from 0.2 to 2,252 kilodaltons. ASP constitutes approximately 15 percent of the dried root. It demonstrates hematopoietic, immunomodulatory, antitumor, antioxidant, radioprotective, and hypoglycemic activities. ASP shows strong affinity for the asialoglycoprotein receptor, making it a potential targeting agent for hepatocyte-directed drug delivery.

5.4 Flavonoids

Flavonoids isolated from Dong Quai include luteolin-7-O-rutinoside, luteolin-7-O-β-D-glucoside, chalcone derivatives, hyperoside, baicalin, and 2″-O-(2″-methylbutyryl) isoswertisin.

5.5 Other Compounds

The volatile oil also contains terpenoids (α-pinene, β-phellandrene, p-cedrene, caryophyllene oxide), phenolic compounds (butenylphenol, eugenol), and alkanes (tetradecane, nonane, n-undecane). Amino acids including arginine and glutamic acid, trace elements (copper, iron, manganese), folic acid, choline, and uracil are also present.

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6. Mechanisms of Action

6.1 Blood-Replenishing and Hematopoietic Mechanisms

The blood-replenishing activity of Dong Quai operates through multiple mechanisms. Phthalide compounds and ferulic acid derivatives promote hemoglobin expression in erythroleukemic cell models. ASP protects bone marrow cells from chemotherapy-induced apoptosis through regulation of the endoplasmic reticulum-mitochondria axis. Specifically, ASP mitigates ER and mitochondrial swelling, attenuates ER stress-responsive molecule expression, reduces calcium and reactive oxygen species feedback cascades, preserves mitochondrial membrane potential, and inhibits cytochrome C release, thereby blocking the ER-mitochondria-mediated apoptotic cascade. ASP also promotes adaptive metabolic changes that facilitate marrow cell survival under cytotoxic stress.

6.2 Anti-Inflammatory Mechanisms

Phthalide dimers from Dong Quai demonstrate potent anti-inflammatory activity through inhibition of nitric oxide production and pro-inflammatory cytokine transcription. The most active compound inhibits IL-1β and IL-6 transcription at nanomolar concentrations. Wine-processed A. sinensis extracts show superior anti-inflammatory effects compared to unprocessed herb, with mechanisms involving inhibition of the Akt/NF-κB and STATs signaling pathways. Ferulic acid and Z-ligustilide, the major compounds in ethyl acetate extracts, inhibit NF-κB luciferase activity and reduce TNF-α, IL-6, macrophage inflammatory protein-2, and nitric oxide secretion from LPS-stimulated macrophages.

6.3 Cardiovascular and Antispasmodic Mechanisms

Coumarins present in Dong Quai act as vasodilators and antispasmodic agents. One coumarin constituent stimulates the central nervous system. The herb's anticoagulant and antiplatelet activities are well-documented, contributing to its traditional use for cardiovascular conditions and its potential interaction with blood-thinning medications.

6.4 Neuroprotective Mechanisms

Z-ligustilide demonstrates neuroprotective effects in animal models of cerebral ischemia and neurodegeneration. The mechanism involves antioxidant activity, inhibition of apoptosis, and modulation of neurotransmitter systems.

6.5 Immunomodulatory Mechanisms

ASP activates complement and enhances immune responses. It stimulates macrophages, fibroblasts, and leukocytes, contributing to its hematopoietic and antitumor activities. The polysaccharide also promotes survival, proliferation, and differentiation of B cell progenitors.

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7. Traditional and Ethnobotanical Uses

7.1 Menstrual Disorders and Gynecological Conditions

Formulation: Root decoction, often in multi-herb formulas.

Preparation and Use: Dong Quai is the primary herb in traditional Chinese medicine for regulating menstruation. It is prescribed for irregular menstruation, amenorrhea (absence of menstruation), dysmenorrhea (painful menstruation), and premenstrual syndrome. The root is typically decocted with other herbs and taken as a tea. The classic formula Si Wu Tang combines Dong Quai with Rehmannia, white peony, and Ligusticum for blood deficiency and menstrual irregularities.

Scientific Validation: The traditional use is supported by the herb's documented effects on uterine contractions, blood flow to reproductive organs, and its anti-inflammatory and antispasmodic properties. Phthalides and ferulic acid are considered the primary active constituents.

7.2 Blood Deficiency and Anemia

Formulation: Root decoction or powder.

Preparation and Use: Dong Quai is classified as a blood tonic in traditional Chinese medicine, used for symptoms of blood deficiency including pallor, fatigue, dizziness, and palpitations. It is prescribed for anemia, particularly anemia associated with kidney disease.

Scientific Validation: The blood-replenishing constituents have been identified as phthalides and ferulic acid derivatives. ASP demonstrates hematopoietic activity and protection against chemotherapy-induced myelosuppression.

7.3 Postpartum Recovery

Formulation: Root decoction, often in combination with other herbs.

Preparation and Use: Dong Quai is widely used in Asia as part of postpartum herbal mixtures to support recovery, replenish blood lost during childbirth, and address postpartum blues or depression. It is also used in some postpartum mixtures as a galactogogue to promote lactation.

Scientific Validation: A Japanese study compared a 13-herb mixture including Dong Quai with ergonovine for effects on lactation and serum prolactin. Women receiving the herbal mixture showed higher serum prolactin levels on days 1 and 6 postpartum, and greater milk volumes on days 4, 5, and 6 compared to the ergonovine group. However, the study lacked a placebo group and had methodological limitations.

7.4 Pain and Inflammation

Formulation: Root decoction or processed root preparations.

Preparation and Use: Dong Quai is used for various pain conditions, including dysmenorrhea, arthritic pain, abdominal pain, and pain following surgery. Wine-processed Dong Quai is preferred for its enhanced anti-inflammatory effects.

Scientific Validation: Phthalide dimers demonstrate potent anti-inflammatory activity in vitro, and wine processing enhances these effects through modulation of Akt/NF-κB and STATs pathways.

7.5 Constipation

Formulation: Root decoction.

Preparation and Use: Dong Quai is used traditionally to moisten the intestines and promote bowel movements, particularly in blood deficiency patterns where constipation is associated with dryness.

7.6 Regional Ethnomedicinal Applications Summary

China: The primary and most extensive traditional use, documented in the Shennong Bencao Jing (200-300 AD). Used for gynecological diseases, blood deficiency, pain, and constipation.

Japan and Korea: Used in Kampo and Korean medicine for similar indications, though often using locally cultivated Angelica species (A. acutiloba and A. gigas respectively).

Thailand: Known as Kot Chiang, used in traditional Thai medicine for fever, dysentery, and pain. It is one of the ingredients in the traditional "Kot" formulations.

Western Countries: Marketed as a dietary supplement for women's health, particularly for menstrual complaints and menopausal symptoms.

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8. Healing Recipes, Teas, Decoctions, and Practical Applications

8.1 Dong Quai Decoction for Menstrual Support

Purpose: To regulate menstruation and relieve menstrual cramps.

Preparation and Use: Simmer 6 to 12 grams of dried root slices in 500 milliliters of water for 20 to 30 minutes. Strain and drink in divided doses. The decoction is traditionally taken after menstruation for several days to replenish blood and regulate the cycle.

Scientific Validation: Traditional use is supported by the herb's documented effects on uterine contractions and blood flow, though rigorous clinical trials are limited.

8.2 Dong Quai and Chicken Soup (Postpartum Tonic)

Purpose: To support postpartum recovery and promote lactation.

Preparation and Use: Combine 10 to 15 grams of Dong Quai root with a whole chicken, ginger, and rice wine. Simmer for 1 to 2 hours until the chicken is tender. Consume the soup over several days.

Scientific Validation: The traditional practice is widespread in Chinese communities. A clinical study of a multi-herb formula including Dong Quai showed increased serum prolactin and milk volumes in postpartum women, though the study had methodological limitations.

8.3 Dong Quai Tea for Blood Deficiency

Purpose: To address fatigue, pallor, and dizziness associated with blood deficiency.

Preparation and Use: Steep 3 to 6 grams of dried root slices in hot water for 10 to 15 minutes. Drink two to three times daily. The tea is often combined with other blood-tonifying herbs such as Rehmannia and white peony.

8.4 Wine-Processed Dong Quai for Enhanced Anti-Inflammatory Effects

Purpose: To maximize the anti-inflammatory benefits of the herb.

Preparation and Use: The root is stir-fried with yellow rice wine until the slices darken and become slightly crispy. The processed root is then decocted or powdered for use.

Scientific Validation: Wine processing significantly enhances anti-inflammatory activity through increased contents of certain phthalide dimers and altered chemical composition, with superior effects on Akt/NF-κB and STATs pathways compared to unprocessed root.

8.5 Culinary and Dietary Uses

Dong Quai is approved as a health food raw material in China and is used in dietary supplements, teas, and health products. Its distinctive aroma, between celery and licorice, makes it suitable for inclusion in soups and stews, particularly in traditional postpartum dishes. It is also used in the seasoning industry and in cosmetics.

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9. Clinical Significance and Evidence Summary

9.1 Evidence Hierarchy by Activity

Blood-Replenishing and Hematopoietic: Moderate evidence from in vitro and animal studies. Specific constituents responsible for blood-replenishing activity have been identified. ASP demonstrates protection against chemotherapy-induced myelosuppression in animal models. Clinical trials are limited.

Anti-Inflammatory: Strong evidence from in vitro studies. Phthalide dimers demonstrate potent activity at nanomolar concentrations. Wine-processed herb shows superior effects. Animal studies support anti-inflammatory activity in vivo.

Gynecological (Menstrual Regulation): Traditional use is extensive, but rigorous clinical trials are lacking. The herb's effects on uterine contractions and blood flow provide plausible mechanisms.

Antioxidant: Moderate evidence from in vitro studies. Ferulic acid and other phenolic compounds confer significant free radical scavenging capacity.

Cardiovascular (Anticoagulant/Antiplatelet): Documented activity. Coumarins act as vasodilators and antispasmodics. The herb has well-known interactions with anticoagulant drugs, indicating significant biological activity.

Lactation Support: Limited evidence from a single study with methodological limitations. The study showed increased serum prolactin and milk volume, but lacked a placebo group and used a multi-herb formula.

9.2 Clinical Trial Data

Clinical research on Dong Quai has examined its use in pulmonary hypertension, coronary artery disease, portal hypertension, chronic abdominal pain, ulcerative colitis, perimenopause, menopause, stroke recovery, anemia of kidney disease, and tamoxifen-induced endometrial cancer. Many of these studies use multi-herb formulas in which Dong Quai is one component, making it difficult to isolate its specific contribution.

9.3 Safety and Toxicology Data

Dong Quai is generally well-tolerated in general use. However, it may increase the risk of bleeding in patients taking warfarin and antiplatelet drugs, and may cause photosensitivity reactions. Case reports describe phototoxicity due to furocoumarins, with symptoms including skin rash, irritation, and extreme sensitivity to the sun. The herb has a stimulant effect on the gastrointestinal tract and should be used cautiously in patients with chronic intestinal diseases such as diverticulitis or irritable bowel syndrome.

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10. Safety and Toxicology

10.1 Toxicity Profile

Acute Toxicity: No specific LD50 data are available in the search results, but Dong Quai is considered to have low acute toxicity in traditional use.

Clinical Safety: Dong Quai is generally well-tolerated. Reported adverse effects include photosensitivity, gastrointestinal stimulation, and increased bleeding risk.

Phototoxicity: Furocoumarins in Dong Quai can cause photosensitivity, with symptoms including skin rash, irritation, and extreme sensitivity to the sun or sunburn. Use should be discontinued if these symptoms develop.

10.2 Contraindications and Precautions

Pregnancy: Contraindicated. Dong Quai should not be used during pregnancy.

Breastfeeding: Best avoided during breastfeeding. While some traditional postpartum formulas include Dong Quai, the NIH LactMed database recommends avoiding it during lactation.

Hormone-Sensitive Cancers: Contraindicated in patients with hormone-sensitive cancers. Dong Quai should not be used by individuals being treated with radiation therapy.

Bleeding Disorders: Contraindicated in patients with bleeding disorders or those taking anticoagulant or antiplatelet medications.

Surgery: Stop taking Dong Quai at least 2 weeks prior to scheduled surgery.

Gastrointestinal Disease: Use with caution in patients with chronic intestinal diseases including diverticulitis or irritable bowel syndrome.

Estrogen Therapy: Dong Quai may increase the risk of estrogenic side effects when taken with estrogens.

10.3 Potential Drug Interactions

Warfarin and Antiplatelet Drugs: Dong Quai may increase the risk of bleeding when taken with warfarin, aspirin, clopidogrel, or other anticoagulant or antiplatelet medications. Concurrent use should be avoided.

Estrogens: Dong Quai may potentiate estrogenic side effects.

Other Herbs and Supplements: Dong Quai should not be used with other herbs or supplements that may slow blood clotting.

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11. Quality Control Parameters

11.1 Marker Compounds for Standardisation

Z-Ligustilide: The primary quality marker for Dong Quai. The Hong Kong Chinese Materia Medica Standards require not less than 0.60 percent Z-ligustilide in dried root material, calculated with reference to the dried substance.

Ferulic Acid: A secondary marker compound with documented blood-replenishing and antioxidant activities.

Phthalide Dimers: Emerging markers for anti-inflammatory quality, particularly angesilides and other dimers with potent activity.

11.2 Recommended Analytical Methods

High-performance liquid chromatography (HPLC) with diode array detection is the standard method for quantification of Z-ligustilide and ferulic acid. The Hong Kong Chinese Materia Medica Standards provide a reference fingerprint chromatogram with four characteristic peaks for positive identification. Ultra-performance liquid chromatography with quadrupole time-of-flight mass spectrometry (UHPLC-Q-TOF-MS/MS) is used for comprehensive chemical profiling and identification of phthalide dimers and other constituents. Fourier transform infrared spectroscopy with attenuated total reflection (ATR-FTIR) provides a rapid, non-invasive method for quality evaluation and discrimination of different bolting types and processing methods.

11.3 Suggested Specifications

Total ash should not exceed 6.0 percent, and acid-insoluble ash should not exceed 1.5 percent. Water-soluble extractives (cold extraction method) should be not less than 48.0 percent. Water content should be controlled to prevent spoilage and maintain quality. Foreign matter should not exceed 1.0 percent. Heavy metals, pesticide residues, aflatoxins, and sulphur dioxide residues should be monitored according to pharmacopoeial standards.

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12. Cultivation and Sustainability

12.1 Growth Requirements

Climate: Cold and damp hillside conditions. Dong Quai requires high altitudes and cool temperatures, growing poorly at low elevations. In Korea, A. sinensis survival was only 3.6 percent at 50 meters altitude, 45.2 percent at 500 meters, and 70.3 percent at 700 meters.

Altitude: 2,200 to 3,000 meters in its native range.

Soil: Rich, deep soil on mountain slopes with good moisture retention.

Propagation: Seeds are sown in early summer. Germinated seedlings are collected in autumn and overwintered indoors. In the following spring, stored seedlings are planted for vegetative growth and harvested in autumn of the second year.

12.2 Sustainable Harvesting

Plant parts harvested: Root.

Harvesting method: Roots are harvested in autumn of the second year. Early bolting, which affects up to 60 percent of plants, reduces root yield and quality through lignification and degradation of bioactive metabolites. Autumn-bolted roots are often mistaken for normal roots due to similar morphological characteristics, but differ in chemical composition.

Processing: Roots are dried and either used unprocessed or processed with yellow rice wine. Wine processing enhances anti-inflammatory activity and alters chemical composition.

12.3 Conservation Status

Not threatened. The species is extensively cultivated, with over 43,500 hectares under production in China alone. The primary concern is quality control and prevention of early bolting rather than conservation.

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13. Cultivar and Varietal Comparison

No named cultivars of Angelica sinensis are widely recognized in the literature. The species is variable, and quality is assessed primarily by chemical composition and root morphology rather than cultivar designation.

Comparison with Related Species:

Angelica gigas (Korean Angelica): Cultivated in Korea and adapted to lower altitudes than A. sinensis. It produces higher root yields (3,000 kg/ha compared to 1,600 kg/ha for A. sinensis at high altitude) and has different chemical constituents, though used for similar purposes.

Angelica acutiloba (Japanese Angelica): Cultivated in Japan and adapted to lower elevations. Like A. gigas, it differs from A. sinensis in chemical composition and efficacious properties.

Quality Variation by Root Section: Ferulic acid content is highest in the tail section (Guiwei), followed by the body (Guishen), and lowest in the head (Guitou). This distribution informs traditional processing and prescribing practices.

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14. Research Gaps and Future Directions

14.1 Critical Research Gaps

Human Clinical Trials: Comprehensive clinical trials are lacking for most therapeutic claims, including menstrual regulation, blood deficiency, and anti-inflammatory effects. High-quality, randomized controlled trials are needed to establish efficacy and safety in humans.

Bioavailability and Pharmacokinetics: Limited data exist on the absorption, metabolism, and bioavailability of key compounds, particularly phthalide dimers and polysaccharides.

Standardized Formulations: There is a need for stable, standardized phytopharmaceutical preparations with consistent quality and efficacy. The variable content of Z-ligustilide and other markers in commercial products complicates research and clinical use.

Long-term Safety: Chronic toxicity studies are lacking, especially for concentrated extracts.

Mechanistic Studies: Further elucidation of molecular pathways is needed for blood-replenishing, anti-inflammatory, and neuroprotective mechanisms.

Comparative Studies: More comprehensive studies are needed to compare the pharmacological profiles of different Angelica species and their specific applications.

14.2 Future Research Priorities

Phthalide Dimer Development: The discovery of phthalide dimers with nanomolar anti-inflammatory activity (angesilides) opens new avenues for drug development. Further characterization of these compounds, including their pharmacokinetics and in vivo efficacy, is warranted.

ASP as Therapeutic Adjuvant: The demonstration that ASP protects marrow cells from chemotherapy-induced apoptosis through ER-mitochondria axis regulation suggests potential as a therapeutic adjuvant to mitigate hematopoietic stress during cancer treatment.

Quality Control and Authentication: Development of rapid, reliable methods for authentication and quality assessment is needed to ensure product consistency and prevent adulteration.

Processing Optimization: Further research on the chemical and pharmacological changes induced by wine processing could lead to optimized processing methods for enhanced efficacy.

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15. Commercial Applications

15.1 Dietary Supplements and Health Products

Dong Quai is marketed globally as a dietary supplement, primarily for women's health. It is approved by China's National Health Commission for use in health food raw materials. Commercial products include capsules, tablets, teas, and liquid extracts.

15.2 Traditional Chinese Medicine Formulas

Dong Quai is a component of numerous traditional Chinese medicine formulas, including Si Wu Tang (Four-Substance Decoction), Dang Gui Bu Xue Tang (Dong Quai Blood-Nourishing Decoction), and Dang Gui Shao Yao San (Dong Quai and Peony Powder). These formulas are used for gynecological, cardiovascular, and inflammatory conditions.

15.3 Culinary and Cosmetic Applications

Dong Quai is used in the seasoning industry and in the production of tea, health care products, and cosmetics due to its distinctive aroma and bioactive properties. Its use in postpartum chicken soup is a well-known culinary tradition in Chinese communities.

15.4 Pharmaceutical Development

The identification of potent phthalide dimers and the characterization of ASP's mechanisms create opportunities for pharmaceutical development, particularly for anti-inflammatory drugs and hematopoietic adjuvants.

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16. Related Plants for Further Study

Angelica gigas (Korean Angelica): The Korean medicinal species, with different chemical constituents and adapted to lower altitudes. Comparative studies could inform species-specific applications.

Angelica acutiloba (Japanese Angelica): The Japanese medicinal species, also adapted to lower elevations. Like A. gigas, it has a distinct phytochemical profile.

Angelica archangelica (Garden Angelica): The European species, used for digestive complaints and as a flavoring. Its phytochemistry and pharmacology are well-characterized.

Angelica dahurica (Bai Zhi): Another Chinese medicinal Angelica, used for headache and nasal congestion. Comparative studies could identify species-specific bioactive compounds.

Ligusticum species (Chuanxiong, Ligusticum wallichii): A close relative in the Apiaceae, often used in combination with Dong Quai in Chinese medicine formulas for blood and menstrual disorders. Shares phthalide constituents.

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17. Reference Literature

Primary Research

Phthalide compounds from the roots of Angelica sinensis and their blood-replenishing bioactivities (2025). Fitoterapia. Isolates three new phthalide compounds and 45 known compounds, evaluates blood-replenishing and anti-inflammatory activities. Identifies ferulic acid, 4,8-dihydroxyacetophenone, and vanillic acid as hemoglobin-promoting constituents.

Angelica sinensis polysaccharides prevents marrow cell apoptosis during stress via regulating endoplasmic reticulum-mitochondrion and adaptive metabolism (2025). Journal of Ethnopharmacology. Elucidates the mechanism by which ASP protects bone marrow cells from chemotherapy-induced apoptosis through ER-MAMs-mitochondria axis regulation.

Bioassay and NMR-HSQC-Guided Isolation and Identification of Phthalide Dimers with Anti-Inflammatory Activity from the Rhizomes of Angelica sinensis (2025). Journal of Agricultural and Food Chemistry. Isolates nine pairs of phthalide dimers (angesilides A-I) with complex polycyclic skeletons, identifies compound 9 with IC50 of 425 nM for NO inhibition.

The effective fractions of wine-processed Angelica sinensis (Oliv.) Diels ameliorates inflammation via inhibiting Akt/NF-κB and STATs signaling pathway (2025). Fitoterapia. Demonstrates that wine-processed A. sinensis has superior anti-inflammatory activity compared to unprocessed herb.

The Dynamic Accumulation Rules of Chemical Components during the Medicine Formation Period of Angelica sinensis (2023). Molecules. Investigates the effects of early bolting on root quality and chemical composition, provides ATR-FTIR method for quality evaluation.

Reviews and Monographs

Angelica sinensis in China-A review of botanical profile, ethnopharmacology, phytochemistry and chemical analysis (2016). Journal of Ethnopharmacology. Comprehensive review of traditional uses, phytochemistry, and analytical methods.

Chemical Composition, Pharmacological Effects, and Clinical Applications of Danggui (Angelicae Sinensis Radix) (2025). Thieme Group. Reviews phthalides, organic acids, polysaccharides, and flavonoids, and their pharmacological activities.

Dong Quai (Angelica sinensis): Root (2025). ScienceDirect. Monograph examining scientific research on Dong Quai for various health conditions.

Regulatory and Safety Sources

Hong Kong Chinese Materia Medica Standards: Radix Angelicae Sinensis. Provides quality standards including Z-ligustilide content requirement of not less than 0.60 percent.

NIH LactMed: Dong Quai. Reviews use during lactation, recommends avoiding during breastfeeding due to bleeding risk and lack of safety data.

Johns Hopkins Health Library: Dong Quai. Provides safety information including photosensitivity, drug interactions, and contraindications.

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18. Disclaimer

Angelica sinensis is generally considered safe for moderate use, but it may increase bleeding risk and cause photosensitivity. Use with caution.

This information is for educational and academic purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Pregnant or nursing women should not use Dong Quai. Individuals with hormone-sensitive cancers, bleeding disorders, or chronic gastrointestinal diseases should avoid use. Dong Quai should not be taken with warfarin, antiplatelet drugs, or other blood-thinning medications.

Do not discontinue prescribed medications without consulting your doctor.

Proper identification is crucial to avoid confusion with other Angelica species, which have different chemical compositions and therapeutic properties.

Always consult a qualified healthcare practitioner before using any plant for medicinal purposes.