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Astragalus

(Astragalus membranaceus)
Also know as Milk vetch, huangqi

Botanical Information

A perennial member of the pea family with small yellow flowers in elongated spikes.

Working with Astragalus

Part(s) Used

Root

Herb Forms

Capsules, tablets, tinctures, bulk herb for teas

Christopher Hobbs:

“Known in China as a “Qi” tonic, astragalus is one of the most beneficial immune tonics and cancer-fighting herbs. It increases the body’s resistance to disease, strengthens the digestion, and improves the vitality of the immune system. Astragalus increases the “bone marrow reserve,” enabling the body to produce more immune effector cells (such as t-cells), aiding the immune system in its fight against pathogens. Compounds from astragalus root have been shown to slow the aging process in animal cells by helping to preserve the length of telomeres at the ends of chromosomes. Long telomere length has been associated with human longevity, which might explain the reverence with which this herb is held in traditional Chinese medicine. In China, health practitioners prescribe astragalus as a daily tonic. It is often blended with other immune tonics such as ligustrum.

Astragalus promotes the production of white blood cells, helping the body produce antibodies and interferon to fight infections. Herbalists often recommend it for people who are experiencing frequent colds and flu, fatigue, and weakness in the limbs (when arms and legs feel heavy). With regular use, astragalus is thought to be one of the most important herbs to help strengthen the immune system and help the boy prevent and fight cancer and chronic viral syndromes. It is especially indicated for use during recovery from a serious or long illness because it promotes strong digestion and assimilation of nutrients. In the case of chronic illness, the herb is often taken daily for anywhere from 3 months to several years or more. More well-designed human trials are needed to confirm its status as a major healing herb for mainstream medical practice, but even without them, astragalus continues to be used widely in many cultures.

Astragalus has a taste of SWEET and a temperature of WARM.”

Historical Uses

  • Traditional Chinese Medicine (TCM): Astragalus has been used for thousands of years, primarily as a tonic herb to boost energy (qi) and immune strength, increase vitality, and protect against disease.
  • Traditional Uses: Often used to treat fatigue, respiratory infections, and other conditions where the body needs support in recovering strength and resilience.

Modern Clinical Uses by Herbalists & Naturopaths

  • Immune Support: Commonly used to enhance immune function and reduce the frequency of colds, flu, and respiratory infections.
  • Adaptogen: Considered an adaptogenic herb, it is believed to help the body cope with physical and mental stress.
  • Heart Health: Used for its purported benefits in supporting cardiovascular health, improving circulation, and managing cholesterol.
  • Chronic Fatigue and Energy: Recommended by naturopaths for boosting energy in cases of chronic fatigue and debility.

Chemistry

  • Key Compounds: Astragalus contains polysaccharides, flavonoids, saponins (astragalosides), and amino acids.
  • Astragalosides: Astragaloside IV is one of the main active components with potential benefits in immune modulation, anti-inflammatory, and anti-aging effects.
  • Polysaccharides: These contribute to its immune-modulating properties.

Pharmacology

  • Immune Modulation: Astragalus is believed to stimulate immune cells, including macrophages and T-cells.
  • Antioxidant Properties: It has been shown to reduce oxidative stress, which may protect cells and support longevity.
  • Anti-Inflammatory Actions: Astragalus extracts may help reduce inflammatory responses, supporting recovery from illness and injury.
  • Telomerase Activation: Some studies suggest that Astragalus may stimulate telomerase, an enzyme linked to cell longevity.

Summary of Clinical Trials

  • Immune Support: Several clinical trials support Astragalus’ role in enhancing immune response, showing reduced frequency and severity of colds and respiratory infections.
  • Cardiovascular Health: Some clinical trials show positive effects on cardiac function, particularly in chronic heart failure patients, where Astragalus has improved heart performance and reduced symptoms.
  • Kidney Health: Clinical studies have explored its potential benefits in chronic kidney disease, where it may help reduce proteinuria and improve renal function.
  • Anti-Aging and Telomerase: Some studies, though still in early stages, support its potential for longevity by stimulating telomerase activity.

In summary, Astragalus is widely used in both traditional and modern natural medicine for immune enhancement, stress adaptation, cardiovascular support, and anti-aging effects. Its safety profile is favorable when used correctly, though further high-quality studies could strengthen clinical evidence for its efficacy.

Generated by ChatGPT; edited by Dr. Christopher Hobbs

 

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Cautions

Astragalus is generally considered safe for most people when used in moderate doses. Commonly reported side effects are mild and may include digestive upset. Precautions: Some species of Astragalus are toxic, so it’s essential to use only Astragalus membranaceus from reliable sources. Contraindications: Not recommended for people with autoimmune diseases, as it may stimulate immune function. Those on immunosuppressive medications should avoid it without consulting a healthcare provider.

Conditions treated with Astragalus

Condition

Treatment Support

Application

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Condition

Treatment Support

immune tonic

Application

capsules, tea

Condition

Treatment Support

digestive tonic

Application

tea, tincture, tablet, capsule

Dosages

Decoction

9–30 grams per day in dried root form

Infusion

9–30 grams per day in dried root form

Capsules

Follow label instructions

Tincture

2-4 mL 3 times daily

Extract

standardized extract 500=1,500 mg daily

The information given here is designed to help you make informed choices about your health. The information is drawn from numerous sources—both traditional medicine practice, from the clinical experience of many herbalists currently practicing, and supported by decades of scientific research from the author. The research most consulted includes human clinical trials that help to determine the most effective and safe herbs for various needs, the best doses, and types of preparations.

The information offered in this database is not intended as a substitute for any that may have been prescribed by your health practitioner or physician.

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