Siler root (Saposhnikovia divaricata)
Synopsis of siler root
Siler root, known in Traditional Chinese Medicine (TCM) as Fáng Fēng (防風), comes from the plant Saposhnikovia divaricata, a perennial herb native to East Asia. It is part of the Apiaceae (carrot) family and is recognized for its sweet, slightly spicy flavor and its ability to "expel wind"—a central concept in TCM relating to pathogenic influences like colds, fevers, and joint pain.
Siler root is traditionally used as a diaphoretic (sweat-inducing), antipyretic (fever-reducing), and anti-inflammatory herb. It has immunomodulatory properties and is often used at the early onset of colds and flu, particularly when symptoms include chills, body aches, and neck or upper back stiffness. Its ability to relax muscle tension and alleviate pain also makes it useful for wind-damp conditions such as rheumatic or arthritic joint pain.
Modern studies have found that siler root contains chromones, coumarins, and polysaccharides that may contribute to its anti-inflammatory, analgesic, antispasmodic, and antimicrobial activities. It is typically prepared as a decoction, powder, or included in classical formulas like Yu Ping Feng San (Jade Windscreen Powder) to support immune function and protect against recurrent infections.
Historical Use:
Siler root has been used in Chinese herbal medicine for over 2,000 years. It is mentioned in the Shennong Bencao Jing (Divine Farmer’s Materia Medica Classic), one of the earliest pharmacological texts, where it was categorized as a top-grade herb—safe for long-term use and capable of supporting general health and longevity.
In classical TCM, Fáng Fēng is considered a key herb for releasing the exterior, especially when wind-cold or wind-heat pathogens invade the body. It was often combined with herbs like Jing Jie (Schizonepeta) and Qiang Huo (Notopterygium) for treating colds, fevers, and joint pain. Its name, which translates as "guard against wind," reflects both its therapeutic action and protective reputation.
In addition to cold and flu symptoms, siler root was historically used for tetany (muscle spasms), numbness, itching, and migraine-like headaches. It was also believed to be helpful in preventing seasonal illnesses and treating certain neurological conditions when attributed to "wind" disturbing the body's internal balance.
Today, siler root continues to be widely used in TCM and is gaining interest in the West as part of immune-supportive and anti-inflammatory herbal formulations. Though less commonly used as a standalone herb outside of Chinese medicine, its long history and diverse applications make it an important botanical in holistic healing systems.
Siler root is used for these health conditions
Abdominal Pain (Traditional)
Abrasions (Traditional)
Abscesses (Traditional)
Afterbirth Pain (Traditional)
Allergies (respiratory) (Traditional)
Asthma (Traditional)
Backache (Traditional)
Bites and Stings (Traditional)
Blood Poisoning (Traditional)
Boils (Traditional)
Bronchitis (Traditional)
Bruises (healing) (Traditional)
Burns and Scalds (Traditional)
Cancer (natural therapy for) (Traditional)
Cancer Treatment (reducing side effects) (Traditional)
Canker Sores (Traditional)
Carbuncles (Traditional)
Chest Pain (Traditional)
Chills (Traditional)
Cholera (Traditional)
Circulation (poor) (Traditional)
Colds (general) (Traditional)
Colds (prevention) (Traditional)
Congestion (bronchial) (Traditional)
Congestion (lungs) (Traditional)
Contagious Diseases (Traditional)
Dandruff (Traditional)
Debility (Traditional)
Dermatitis (Traditional)
Diarrhea (Traditional)
Digestion (poor) (Traditional)
Diphtheria (Traditional)
Dizziness (Traditional)
Edema (Traditional)
Emotional Sensitivity (Traditional)
Endurance (lack of) (Traditional)
Energy (lack of) (Traditional)
Enteritis (Traditional)
Epilepsy (Traditional)
Erectile Dysfunction (Traditional)
Eye Infections (Traditional)
siler root is used to support these body systems
Immune System (Traditional)
Joints (Traditional)
Lungs (Traditional)
Muscles (Traditional)
Respiratory System (Traditional)
Skin (Traditional)
