Plant
Astragalus
Astragalus mongholicus / membranaceus
Also known as: huang qi, milk-vetch
A perennial legume native to northern China, Mongolia, and Korea; one of the most-used herbs in Traditional Chinese Medicine and increasingly in Western herbalism. The dried root (*huang qi*) is the medicinal portion, harvested from 4–7 year-old plants. Foundational TCM use is as a *qi tonic* — supporting the body's vital energy, immune function, and recovery after illness or exhaustion. Modern pharmacology has documented immunomodulatory, anti-inflammatory, cardio-protective, and anti-fatigue effects; the herb is widely used in adjunct cancer therapy in China and Japan, and in Western integrative medicine for chronic fatigue, frequent infections, and immune-system support during recovery from illness. The plant fixes nitrogen via root-nodule bacteria (typical of legumes) and tolerates poor soils.
Scientific / medicinal
Astragalus membranaceus (the historical name; the current accepted scientific name is A. mongholicus var. dahuricus) is in the Fabaceae (legume family). The dried root contains polysaccharides (the principal immunomodulatory compounds), saponins (astragalosides — including astragaloside IV, the most-studied bioactive compound), flavonoids, and amino acids.
Documented pharmacological effects:
- Immunomodulation. Astragalus polysaccharides activate macrophages, enhance T-cell response, and increase natural killer cell activity. Clinical evidence supports use in respiratory infection prevention, chemotherapy-induced immune suppression, and chronic fatigue syndromes.
- Anti-inflammatory. Astragaloside IV inhibits NF-κB signaling and reduces pro-inflammatory cytokine production.
- Cardioprotective. Astragaloside IV has been studied extensively for cardiac function support; some clinical evidence in heart failure and post-myocardial infarction recovery.
- Anti-fatigue. Documented effects on exercise endurance and recovery in animal models and several human trials.
In TCM, astragalus is the principal qi tonic — supporting the body’s [[qi|vital energy]], particularly in the spleen and lung systems. Foundational uses include strengthening recovery after illness, supporting immune function in frequent-infection patterns, and as part of broader adaptogenic formulas. The herb is conventionally used in long-term tonic preparation (cooked into bone broth, soup stocks, or as tea) rather than acute symptom treatment.
Practical
Common preparation forms: dried root slices simmered into broth or tea (the foundational TCM preparation); tincture; powdered root; standardized extract capsules. The herb has an excellent safety record at standard doses; few interactions or side effects documented in long-term use.
The plant is hardy in most temperate climates (USDA zones 4–8) and adapts to poor, dry soils. Home cultivation produces medicinal-quality root in 4–5 years; the species is increasingly available through native-plant and medicinal-herb nurseries in North America.
See also
Auto-generated from this entry’s typed relations: frontmatter, grouped by relation type so the editorial signal isn’t flattened.
- Shares approach with: [[traditional-chinese-medicine]] · [[immune-system]] · [[ashwagandha]]
- Member of: [[plants]]
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Medicinal
shares approach with
- Ashwagandha comparable adaptogenic herb from a different traditional-medicine system (TCM)
1 inbound link · 4 outbound