Fang-feng

Other Names

Apinella seseliodesBangpungBofūCachrys seseloidesChao Fang FengDivaricate SaposhnikoviaDivaricate Saposhnikovia rootFáng FēngFang Feng TanFangfengGuan fang fengJohrenia seseloidesJohrenia sieversiiLaser divaricatumLedebouriella divaricataLedebouriella rootLedebouriella seseloidesPhòng phongPhòng phong bắcRadix SaposhnikoviaeRadix SilerisRumia seseloidesSaposhnikovia divaricataSaposhnikovia seseloidesSilerSiler divaricatumSiler rootStenocoelium divaricatumTrinia dahuricaTrinia seselioidesWind-protector root防風防风방풍

Synopsis

Fang-Feng (Saposhnikovia divaricata): A Comprehensive Reference

1. Identity, Nomenclature, and Botanical Description

Scientific Names and Synonyms

Fang-feng is the traditional Chinese name for the dried root, and sometimes root-rhizome, of Saposhnikovia divaricata, a perennial plant in the Apiaceae family. The accepted current botanical name is Saposhnikovia divaricata (Turcz.) Schischk. Synonyms encountered in older literature and on product labels include Siler divaricatum, Ledebouriella divaricata, Stenocoelium divaricatum, and Ferula seseloides; the plant was formerly assigned to the genus Siler, and may in general be used interchangeably with Western (Mountain) Siler, Siler montanum. In older texts and product labels, you may also see the plant listed under the older name Ledebouriella divaricata or the pharmacognostic name Saposhnikoviae Radix.

Fang-feng is also known by the English names Wind-protector Root, Siler Root, and Divaricate Saposhnikovia Root, and by its Japanese name Bofū, and Korean name Bangpung. The dried roots and rhizomes are called "Fang Feng" in China, while they are called "Bofu" in Japan and "Bang-Poong" in Korea.

Botanical Description and Geographic Origin

Fang-feng is derived from the dried root of a perennial flowering plant native to northern China, Mongolia, and neighboring regions. It is a perennial herb belonging to the family Umbelliferae (Apiaceae), widely distributed in Northeast Asia. It is a perennial with a strong taproot and branched stems, typically reaching 50 to 120 cm in height. Botanically, the plant is 30 to 80 cm high, the whole plant is hairless, the root is stout, the caudex is densely covered with brown fibrous petiole residues, the stem is solitary and usually with two branches, and basal leaves are triangular-ovate, 7 to 19 cm long, two to three times pinnately divided, with bar-like to lanceolate lobes and an entire margin. It blooms from August to September and fruits from September to October.

The botanical family Apiaceae also includes carrot, celery, fennel, and other aromatic plants, which helps explain why Fang-feng has a fragrant, slightly sharp, earthy character when simmered. The texture of the root is flexible and easy to break; the cross-section is light brownish-yellow, with a yellow center and sweet taste.

Plant Part Used

The dried root of the plant is the part most often utilized and is known for containing chromones, polysaccharides, and volatile oils. The roots are harvested, cleaned, and dried for traditional herbal use; the finished root is light in color, aromatic, and fibrous, reflecting the part of the plant historically valued in Chinese herbal medicine.

Common Preparations and Dosage Forms

The dried root can be prepared in several forms for consumption:

Decoction (water extract / tea): The most traditional form. A common traditional decoction range is about 3 to 9 g dried root per day.
Powdered root and capsules: The dried root is ground and encapsulated or blended into herbal powders, often as part of multi-herb granule formulas used in modern clinical practice.
Tincture (liquid alcohol extract): Fang-feng is commercially available as an alcohol-based liquid extract.
Standardized or concentrated granule extracts: Concentrated granule preparations are widely used in contemporary East Asian herbal medicine clinics, enabling precise dosing in multi-herb formulas.

2. Traditional and Historical Use

Origins in Chinese Medical Literature

Siler Root has remained an important herb in traditional East Asian materia medica for centuries. Fang-feng has been recorded in Chinese medical literature for many centuries and is considered one of the classic herbs for expelling wind. In the Shennong Bencao Jing (Shennong Materia Medica), it is listed as a top-grade herb. The great Ming dynasty physician Li Shizhen wrote: "The defender of the imperial also, its skill to heal the wind is the most important, hence the name Fang Feng."

In the Shennong Materia Medica, Saposhnikovia divaricata is classified as a special-grade traditional Chinese medicine due to its immune-protective effects, including dispelling cold, relieving edema and pain, and its potential in treating rheumatoid arthritis. Over 130 traditional Chinese medicine formulations containing this herb are used for rheumatoid arthritis treatment alone.

Traditional Classification and Energetics

Fang-feng is traditionally classified as acrid, sweet, and slightly warm, and is associated with the Bladder, Liver, and Spleen channels. It is one of the most versatile herbs for dispelling Wind in Chinese medicine, gentle and non-drying, making it suitable for a wide range of conditions including colds, joint pain, skin itching, and digestive upset related to stress. The medicinal properties of Fang-feng are relatively mild — its sweating power is not as pronounced as Ma Huang (ephedra) or Gui Zhi (cinnamon twig), and the spiciness is not as great as Qiang Huo, so it is called "the emollient in wind medicine."

Traditional Indications

In Chinese medical tradition, the principal uses of Fang-feng fall into several overlapping categories:

Exterior wind-cold and wind-heat patterns: It is used to treat external wind-chill, wind-heat, and joint and muscle rheumatism; its main function is to dispel wind — that is, to relieve symptoms caused by wind and evil through antipyretic, sweating, and analgesic effects. It is often paired with Jing Jie (Schizonepeta) to treat colds.
Wind-damp painful obstruction (Bi syndrome): Compared to Jing Jie, Fang-feng is warmer and can overcome humidity (i.e., treats symptoms caused by dampness), so the treatment of rheumatic paralysis pain uses Fang-feng instead of Jing Jie.
Skin and allergic conditions: The herb is also used for skin diseases such as eczema and psoriasis, especially with itching.
Internal wind, convulsions, and tetanus: It has significant traditional application for common cold, headache, rubella, pruritus, tetanus, rheumatic diseases, and arthralgia.
Digestive complaints: It is suitable for a wide range of conditions including digestive upset related to stress.

Use in Traditional Formulas

Fang-feng rarely features as a standalone therapy in classical TCM; it is most commonly found as a constituent of compound formulas. One of the most historically significant is Yu Ping Feng San (Jade Windscreen Powder). Yu Ping Feng San is composed of Astragalus membranaceus (Huang Qi), Atractylodes macrocephala (Bai Zhu), and Saposhnikovia divaricata (Fang-feng) in a ratio of 3:1:1 by weight. Yupingfeng San originates from Danxi Xinfa by Zhu Danxi of the Yuan dynasty. Another classical formula is Xiao Feng San, used for allergic skin conditions such as eczema and urticaria, in which Fang-feng is a key ingredient. It is generally prescribed in classical texts to dispel wind to release the exterior pattern, dispel dampness, relieve pain, and to arrest convulsions, which is roughly in line with modern applications.

Although Fang-feng is not a commonly used culinary herb, in ancient culinary and medicinal recipes there was no clear line between food and medicine; therefore, Fang-feng root was treated both as a spice and as a health agent. In some regions of China, the dried and powdered root was added to herbal soups, broths, and meat dishes, especially during the fall and winter months.

3. Key Constituents and Active Compounds

Major Chemical Classes

Phytochemical and pharmacological studies have shown that the main constituents of S. divaricata are chromones, coumarins, acid esters, and polyacetylenes. The main constituents span several classes of chemical types, including chromones, coumarins, polyacetylenes, essential oils, and polysaccharides; of these, the chromones and coumarins have attracted the most interest in herbal medical research.

Chromones (Signature Compounds)

The main components of Fang-feng are cimifugin and prim-O-glucosylcimifugin as types of chromones. Prim-O-glucosylcimifugin is regarded as the quality standard for Fang-feng and would transform into cimifugin in vivo, which have pharmacological activities with anti-inflammation and detumescence. Chromones are often treated as the signature compounds of Fang-feng. Prim-O-glucosylcimifugin is especially important because it appears both as a measurable marker of quality and as a likely contributor to the herb's anti-inflammatory and antiallergic effects. Cimifugin, a related compound, is also widely studied. These constituents have shown the ability to influence inflammatory signaling pathways, mast-cell related activity, and oxidative stress markers in laboratory systems.

The core active chromone components of the dried root include cimifugin (C), 5-O-methylvisamminol (V), hamaudol (H), and their corresponding glycosides: prim-O-glucosylcimifugin (GC), 4′-O-β-D-glucosyl-5-O-methylvisamminol (GV), and sec-O-glucosylhamaudol (GH).

Research published in Bioscience Reports demonstrated that cimifugin inhibited phosphorylation of NF-κB (IκB and p65) and MAPK (JNK, ERK, and p38) signaling pathways in an imiquimod-induced psoriasis model. Additionally, cimifugin repressed inflammatory cell infiltration, reduced proinflammatory cytokine levels while increasing anti-inflammatory factor (IL-10) levels in serum or sciatic nerves of rats with chronic constriction injury; it enhanced S100β expression and downregulated apoptotic markers in vivo, and its anti-inflammatory and anti-apoptotic properties were verified in LPS-stimulated Schwann cells; moreover, cimifugin suppressed nuclear translocation of p65 NF-κB in vitro and repressed the phosphorylation of IκB, p65 NF-κB, p38 MAPK, ERK1/2, and JNK.

Coumarins

Key bioactive constituents include chromones (cimifugin, prim-O-glucosylcimifugin) and coumarins (imperatorin, anomalin) as well as polyacetylenes. The roots also contain phenolic acids and furanocoumarins. Coumarins are another important group; they add to the herb's biological complexity and may help explain why Fang-feng shows overlapping actions in pain, inflammation, and immune-response models.

Polysaccharides

Polysaccharides derived from S. divaricata have proved to be of various activities, such as analgesic, anti-convulsant, anti-inflammatory, anticoagulant, and antipyretic, as well as anti-cancer. Fang-feng polysaccharides have immunomodulatory properties, supporting the formula Yu Ping Feng San's documented effects on immune function and susceptibility to respiratory infection.

Other Identified Constituents

Naturally occurring components identified in the root include fangfengalpyrimidine, clemiscosin A, 5-hydroxy-8-methoxypsoralen, sec-O-glucosylhamaudol, hamaudol, nodakenetin, prim-O-glucosylcimifugin, cimifugin, 4′-O-beta-D-glucosyl-5-O-methylvisamminol, and 5-O-methylvisamminol. Additional identified constituents include anomalin, furocoumarins, polyacetylenes, hyperosides, terpenes, phenolic compounds, and mannitol.

4. Established Mechanisms of Action

Anti-inflammatory Mechanisms

Key bioactive constituents include chromones (cimifugin, prim-O-glucosylcimifugin), coumarins (imperatorin, anomalin), and polyacetylenes. Research demonstrates significant anti-inflammatory activity via inhibition of NF-κB and COX-2 pathways — consistent with its classical use for painful Bi syndrome and allergic conditions. At the cellular level, a standardized extract of S. divaricata showed anti-inflammatory activity by inhibiting the production of nitric oxide (NO), prostaglandin E2 (PGE2), tumor necrosis factor-α (TNF-α), and interleukin-6 (IL-6) in LPS-induced RAW 264.7 macrophage cells.

A 2023 study in ScienceDirect further investigated chromone-mediated signaling: the chemical investigation led to isolation of fifteen new chromones (sadivamones A–E, cimifugin monoacetate, and sadivamones F–N) and fifteen known chromones; the isolation, structure elucidation, and anti-inflammatory activities of these compounds were presented, and their effect on the MAPK signaling pathways was investigated in LPS-induced RAW264.7 cells.

Analgesic and Antipyretic Mechanisms

Cimifugin has documented antipyretic, analgesic, and antispasmodic effects. A formal phytochemical and pharmacological review (PMC7128302) evaluated a collection of works on in vitro and biochemical studies of S. divaricata, with the discourse on chromones and coumarins offering insight into pharmacological effects including anti-inflammatory, analgesic, immunoregulatory, antioxidative, and related activities.

Immunomodulatory Mechanisms

Research on Yu Ping Feng San (the multi-herb formula containing Fang-feng) found that it has anti-allergic effects and can inhibit the production of IgE; it can effectively suppress the Th2 response and regulate the balance of T cell subsets.

Anti-allergic Mechanisms

A study published in PMC (NCBI) found that cimifugin administered in the sensitization phase of a mouse atopic dermatitis (AD) model significantly inhibited allergic inflammation. Additionally, cimifugin reduced the separated gap among epithelial cells and increased the expression of tight junctions; similar effects on TSLP/IL-33 and tight junctions were obtained in vitro. This mechanism — protecting the epithelial barrier and thereby reducing the cascade of initial allergic sensitization — is considered one of the distinctive mechanisms by which Fang-feng may reduce allergic relapse rate.

5. Scientific Evidence by Area of Use

5.1 Inflammation and Pain (Anti-inflammatory / Analgesic)

The anti-inflammatory and analgesic pharmacology of S. divaricata is the most extensively studied area. The plant contains a variety of active compounds, mainly chromones, coumarins, polysaccharides, and polyacetylenes; these bioactive phytochemicals have various pharmacological effects such as anti-inflammatory, sedative, analgesic, antiproliferative, antioxidant, antiallergic, antitumor, and immunomodulatory activity.

A key preclinical study (PMC4793093, published in Evidence-Based Complementary and Alternative Medicine) investigated the antiosteoarthritis activity of S. divaricata extract. The anti-inflammatory effect of SDE was evaluated in vitro in LPS-treated RAW 264.7 cells; the antiosteoarthritic effect was investigated in an in vivo rat model of monosodium iodoacetate-induced osteoarthritis in which rats were treated orally with SDE (200 mg/kg) for 28 days; the effects were assessed by histopathological analysis and by measuring weight-bearing distribution, cytokine serum levels, and joint tissue inflammation-related gene expression.

Evidence strength: Predominantly preclinical (cell-based and animal model). Most benefit claims are supported mainly by preclinical research rather than strong human trials. No large randomized controlled human trials isolating Fang-feng as a single agent for pain or inflammation have been identified in the published literature.

5.2 Rheumatoid Arthritis

In the classical materia medica, S. divaricata is classified as a special-grade medicine due to its immune-protective effects, including dispelling cold, relieving edema and pain, and its potential in treating rheumatoid arthritis; over 130 traditional Chinese medicine formulations containing this herb are used for rheumatoid arthritis treatment.

A 2025 PMC study (PMC12275060) examined the aqueous extract of S. divaricata root in the context of rheumatoid arthritis (RA). The study explored the active ingredients and serum metabolites of the herb using UPLC-Q-TOF-MS; a total of 5,536 compounds were identified in the extract, and 19 active components were finally selected. In serum metabolites following administration, 4,945 compounds were identified, of which 17 showed anti-inflammatory activity. A separate animal study demonstrated that S. divaricata chromone extract possesses potential antirheumatoid arthritis effects in a mouse model of collagen-induced arthritis.

Evidence strength: Preclinical (animal models, in vitro, and metabolomic analyses). No dedicated human RCTs for Fang-feng monotherapy in RA have been identified.

5.3 Allergic and Skin Conditions

Fang-feng has anti-inflammatory and anti-allergy activities and is widely used for treating allergy, rheumatism, headache, and convulsion, especially as the first choice for allergic dermatitis and skin pruritus. In a preclinical study on psoriasis, cimifugin reduced epidermal hyperplasia, psoriasis area severity index (PASI) scores, ear thickness, and histological psoriasiform lesions in imiquimod-induced mice.

In a formula context, a randomized, double-blind, placebo-controlled clinical trial studied the effectiveness and safety of a mixture of two herbal formulas — Xiao-Feng-San (XFS) and Qing-Shang-Fang-Feng-Tang (QSFFT), both containing Fang-feng as a component, in treating urticaria. However, since Fang-feng is used in multi-herb formulas, isolating its individual contribution to clinical outcomes in human trials is methodologically difficult.

Evidence strength: Preclinical evidence (cell and animal studies) is moderate for the anti-allergic mechanisms of cimifugin; formula-level human evidence exists but cannot be attributed to Fang-feng alone.

5.4 Immune Function and Respiratory Disease (Via Yu Ping Feng San)

The most clinically studied use of Fang-feng is as one of the three components of Yu Ping Feng San (YPFS). Yu Ping Feng San is a TCM formula first documented in the ancient text Dan Xi Xin Fa; it is a blend of Huang Qi (Astragalus), Bai Zhu (Atractylodes), and Fang-feng (Saposhnikovia divaricata), used to treat respiratory disorders including cold, influenza, nasal congestion, and asthma. Limited clinical data suggest benefits of YPFS for allergic rhinitis and COPD; it was also effective in pediatric patients with asthma, although more data are needed to determine utility in those with allergic rhinitis. (Source: Memorial Sloan Kettering Cancer Center integrative medicine database.)

Yu Ping Feng San is a classical Chinese medicine formula with a broad range of clinical applications and is effective in treating various diseases, including those related to immunity, inflammation, tumors, viral infections, and lungs; the prescription has been confirmed to have certain therapeutic effects on respiratory system diseases such as respiratory tract infections and asthma, immunodeficiency diseases, as well as allergic diseases.

Yu Ping Feng San is a classical TCM formulation which has been traditionally used for treatment of immune system related diseases such as chronic bronchitis, allergic rhinitis, and asthma.

Evidence strength: Formula-level clinical data (RCTs and systematic reviews) support YPFS for allergic rhinitis and respiratory infections, but these findings cannot be attributed solely to Fang-feng, as the formula also contains Astragalus and Atractylodes.

5.5 Gut Inflammation and Inflammatory Bowel Disease

A 2023 study published in PMC (PMC10630121) investigated the effects of S. divaricata root on inflammatory bowel disease. In the study, a methanol extract of the root significantly decreased nitric oxide and inflammatory cytokine levels in LPS-induced RAW 264.7 cells in vitro; oral administration reduced the expression of inflammatory cytokines in the colons of mice with DSS-induced colitis; additionally, the extract inhibited the abundance of Clostridium sensu stricto 1 and enhanced predicted functional pathways, including L-glutamate degradation; seven compounds with anti-inflammatory properties were isolated. However, no scientific studies have yet validated its clinical use as an anti-inflammatory agent against inflammatory bowel disease (IBD) in humans.

Evidence strength: Preclinical only (murine model and cell line data); no human clinical evidence identified.

5.6 Antiproliferative and Antitumor Effects

It has been reported that S. divaricata extract may inhibit tumor growth, but the mechanism involved is elusive; a study aimed to investigate the anti-tumor activity of polysaccharides derived from SD in breast cancer and the underlying mechanisms. The results demonstrated that SD polysaccharides (SDPs) promoted U937 (monocyte) cell growth dose-dependently, with no obvious effect on growth of breast cancer cell lines MCF-7 and MDA-MB-231 directly. The proposed mechanism is immunostimulatory rather than directly cytotoxic: accumulating evidence showed that polysaccharides might activate antitumor immune responses.

Earlier cell-based research cited in systematic reviews noted that an in vitro study investigated the anti-proliferative, antioxidant, and anti-inflammatory activities of a 70% ethanol extract of SD; IC50 (50% inhibition) was estimated at 1/300, 1/1400, 1/250, and 1/600 dilutions for the K562, HL60, MCF7, and MDA-MB-468 cell lines, respectively.

Evidence strength: Preliminary, in vitro and animal-model only. No human clinical evidence for anticancer applications of Fang-feng as a single agent has been identified.

5.7 Nervous System Effects

The dried root (Radix Saposhnikoviae) is used as a Chinese herbal medicine for the treatment of immune system, nervous system, and respiratory diseases. Preclinical work on cimifugin has examined its potential role in neuroinflammation and peripheral nerve protection. Cimifugin repressed inflammatory cell infiltration, reduced proinflammatory cytokine levels while increasing anti-inflammatory factor (IL-10) levels in serum or sciatic nerves of rats with chronic constriction injury; it enhanced S100β expression and downregulated apoptotic markers in vivo; the anti-inflammatory and anti-apoptotic properties of cimifugin were verified in LPS-stimulated Schwann cells.

Evidence strength: Preclinical only; human neurological clinical trials with Fang-feng have not been identified.

6. Body Systems Associated with Fang-Feng

Based on traditional use and preclinical pharmacological research, Fang-feng is associated with the following body systems:

Immune system: Fang-feng is traditionally used for its potential effects on the immune system and inflammation.
Musculoskeletal system: The root has been widely used in traditional medicine for the treatment of headache, pain, inflammation, and arthritis in Korea and China; diverse pharmacological effects also include anti-inflammatory, analgesic, antipyretic, and antiarthritic properties.
Respiratory and integumentary (skin) systems: Siler root is traditionally used as a diaphoretic (sweat-inducing), antipyretic (fever-reducing), and anti-inflammatory herb; it is often used at the early onset of colds and flu, particularly when symptoms include chills, body aches, and neck or upper back stiffness.
Digestive and gastrointestinal system: Classical TCM texts describe use for diarrhea and digestive complaints related to stress or liver-spleen disharmony.
Nervous system: Traditional applications include tetanus and convulsions, in addition to headache.

7. Dosage Forms and Reported Dosages

The main researched compounds are chromones and coumarins, especially prim-O-glucosylcimifugin, cimifugin, and related constituents. A common traditional decoction range is about 3 to 9 g dried root per day.

In the key anti-inflammatory and antiosteoarthritis preclinical study, rats were treated orally with SDE (200 mg/kg) for 28 days — a dose in a rodent model that cannot be directly extrapolated to human dosing.

In the antitumor polysaccharide study, a concentration of SDP up to 800 μg/mL did not exhibit obvious cytotoxic effects on breast cancer cell lines in vitro.

No standardized pharmaceutical-grade dosage for Fang-feng monotherapy has been established by major Western regulatory bodies such as the EMA, the US FDA, or the NIH Office of Dietary Supplements. Dosage forms commercially available include dried root for decoction, concentrated granule extracts, powdered root in capsules, and alcohol-based tinctures.

8. Safety Considerations and Known Interactions

Toxicological Profile

Fang-feng is classified as non-toxic in both the Shen Nong Ben Cao Jing and the modern Chinese Pharmacopoeia. Animal studies show a high safety margin, with an oral LD50 of approximately 214 g/kg (crude herb equivalent) in mice, indicating very low acute toxicity. No significant toxic components have been identified. The main bioactive constituents — chromones (such as prim-O-glucosylcimifugin and cimifugin) and coumarins — have low toxicity profiles at therapeutic doses.

Traditional Contraindications

Use with caution in Yin deficiency patterns with interior Heat, as the warm, dispersing nature can aggravate these conditions; avoid in patterns without an exterior Wind component. Precautions include avoiding use if pregnant or nursing; caution in patients with Yin and blood deficiency causing spasms or heat. Blood deficiency with spasms or convulsions is listed as a traditional contraindication.

Known and Theoretical Drug Interactions

No well-documented drug interactions have been established for Fang-feng through rigorous clinical study. Based on its known pharmacological properties, the following theoretical interactions should be considered: Fang-feng extracts have demonstrated anticoagulant effects in animal studies (reducing blood viscosity); caution may be warranted when combining with warfarin, heparin, or similar drugs, though clinical evidence of significant interaction is lacking. Fang-feng contains compounds that inhibit mast cell degranulation and have antihistamine-like effects; theoretically, concurrent use with pharmaceutical antihistamines could produce additive effects.

Fang-feng is not listed in either of the two classical incompatibility texts — Shi Ba Fan (Eighteen Antagonisms) or Shi Jiu Wei (Nineteen Mutual Inhibitions) — that govern known antagonistic or inhibitory herb-herb combinations in classical TCM.

General Safety Margin

No special processing is required for safety purposes; standard decoction use within recommended dosage ranges poses no known toxicity concerns. However, general principles of TCM herb safety apply: TCM is often erroneously believed to be non-toxic or low-toxic because it is traditionally considered "natural"; however, the toxicity and side effects of TCM should not be ignored, and whether TCM is a poison or a remedy depends largely on the dosage used.

9. Summary of Evidence Strength

Modern interest in Fang-feng focuses on its chromones, coumarins, polysaccharides, and other compounds that show anti-inflammatory, antioxidant, antiallergic, and immunomodulatory activity in laboratory and animal research. That research is promising, but the evidence is still much stronger for mechanisms than for proven clinical outcomes in people. The body of evidence supporting Fang-feng's pharmacological activity is substantial at the preclinical level, with well-characterized mechanisms involving NF-κB, MAPK, COX-2, and cytokine pathways. In the formula context (particularly YPFS), some human clinical data exist for allergic rhinitis, asthma, and respiratory infections, but the contribution of Fang-feng specifically cannot be isolated. Independent, well-powered human RCTs examining Fang-feng as a single agent remain absent from the peer-reviewed literature as of the time of this writing.

References

Health Conditions

Health conditions that Fang-feng may help support.

No conditions available.

Body Systems

Body systems that Fang-feng may help support.

No body systems available.