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Astragalus (Astragalus membranaceus)

Botanical Information

  • Family: Fabaceae
  • Common Names: Astragalus, Milk Vetch, Huang Qi (Chinese)
  • Parts Used: Root

Description

Astragalus is a perennial herb native to China and parts of Mongolia and Korea. The plant produces yellow flowers and has a long, fibrous root that is the primary medicinal part. It has been used in Traditional Chinese Medicine (TCM) for thousands of years.

Historical and Traditional Uses

  • Used in TCM to strengthen the immune system and increase energy (qi).
  • Traditionally used as an adaptogen to enhance vitality, stamina, and resistance to stress.
  • Employed for wound healing, respiratory health, and improving overall endurance.

Constituents

  • Polysaccharides
  • Flavonoids
  • Saponins (astragalosides)
  • Amino acids
  • Trace minerals (selenium, zinc)

Actions

  • Adaptogenic
  • Immunostimulant
  • Anti-inflammatory
  • Antioxidant
  • Diuretic
  • Cardioprotective

Medicinal Uses

1. Immune System Support:
Astragalus is widely known for boosting the immune system, enhancing the body’s defense against colds, flu, and other infections. It increases white blood cell activity and promotes immune balance.

2. Adaptogen for Energy and Stress:
As an adaptogen, Astragalus helps the body adapt to physical, mental, and emotional stress. It enhances stamina and reduces fatigue.

3. Cardiovascular Health:
Astragalus supports heart health by improving circulation, reducing blood pressure, and protecting against oxidative damage to the heart.

4. Respiratory Health:
Traditionally used to strengthen lung function and alleviate symptoms of respiratory infections such as bronchitis and asthma.

5. Anti-inflammatory and Wound Healing:
Its anti-inflammatory properties help reduce swelling and inflammation. It is often applied to wounds or taken internally to promote faster healing.

6. Kidney Support:
Astragalus is used to support kidney function, particularly in conditions involving proteinuria and chronic kidney disease.

Preparation and Dosage

Decoction (Tea):

  • 1-2 tbsp of dried root per cup of water. Simmer for 30-45 minutes and drink 1-2 times daily for immune support and vitality.

Tincture:

  • 2-4 ml of Astragalus tincture, taken 2-3 times daily.

Powder:

  • 500-1,000 mg of powdered root per dose, taken 1-2 times daily.

Soups and Stews:

  • Astragalus root is often added to soups and stews as a traditional remedy to boost overall health.

Precautions and Contraindications

  • Autoimmune Conditions: Individuals with autoimmune disorders should use caution, as Astragalus may overstimulate the immune system.
  • Pregnancy and Lactation: Generally considered safe in food amounts, but consult a healthcare professional for medicinal use.
  • Medication Interactions: May interact with immunosuppressants and blood pressure medications.

Energetics (Traditional Medicine Perspectives)

  • Ayurvedic: Warming and nourishing, Astragalus can help balance vata and kapha while moderately increasing pitta.
  • Traditional Chinese Medicine: Classified as sweet and slightly warming, it strengthens qi and tonifies the spleen and lungs.

Combinations

  • For Immune Support: Combine with echinacea and elderberry.
  • For Stress and Fatigue: Combine with ginseng and ashwagandha.
  • For Respiratory Health: Combine with licorice and reishi mushroom.

Harvesting and Storage

  • Harvesting: Roots are typically harvested after 4-5 years of growth during autumn.
  • Drying: Wash and slice the roots, then dry them in a well-ventilated area.
  • Storage: Store dried roots in an airtight container in a cool, dark place for up to a year.

Modern Research

Studies have shown Astragalus to be effective in enhancing immune function, protecting cardiovascular health, and supporting kidney function. Research also highlights its antioxidant and anti-aging properties.

Astragalus remains a vital herb in both traditional and modern herbal medicine, offering versatile support for immunity, energy, and overall well-being.