Astragalus

Uses

Botanical names:
Astragalus membranaceus

Parts Used & Where Grown

Astragalus is native to northern China and the elevated regions of the Chinese provinces, Yunnan and Sichuan. The portion of the plant used medicinally is the four- to seven-year-old dried root, collected in the spring. While over 2,000 types of astragalus exist worldwide, the Chinese version has been extensively tested, both chemically and pharmacologically.1

What Are Star Ratings?

This supplement has been used in connection with the following health conditions:

Used forWhy
1 Star
Common Cold and Sore Throat
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Adaptogens such as astragalus are thought to help keep various body systems—including the immune system—functioning optimally.

Herbal supplements can help strengthen the immune system and fight infections. Adaptogens, which include eleuthero, Asian ginseng, , and schisandra, are thought to help keep various body systems—including the immune system—functioning optimally. They have not been systematically evaluated as cold remedies. However, one double-blind trial found that people who were given 100 mg of Asian ginseng extract in combination with a flu vaccine experienced a lower frequency of colds and flu compared with people who received only the flu vaccine.

1 Star
Heart Attack
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Preliminary clinical trials in China suggest that astragalus may be beneficial for people after they have suffered a heart attack.
Preliminary clinical trials in China suggest that astragalus may be of benefit in people after they have suffered a heart attack. These studies did not attempt to show any survival or symptom reduction benefit. Therefore, further research is needed to determine whether astragaslus would be of benefit to people with heart attacks or angina.
1 Star
Hepatitis
2.5 grams licorice three times per day providing 750 mg glycyrrhizin, taken under the supervision of a doctor
Early clinical trials in China suggest astragalus root might benefit people with chronic viral hepatitis.

Early clinical trials in China suggest root might benefit people with chronic viral hepatitis, though it may take one to two months to see results. Textbooks on Chinese herbs recommend taking 9–15 grams of the crude herb per day in decoction form. A decoction is made by boiling the root in water for a few minutes and then brewing the tea.

1 Star
Immune Function
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Complex polysaccharides in astragalus affect the immune system. One study showed that astragalus elevate antibody levels in healthy people.
Complex polysaccharides present in and in maitake and coriolus mushrooms appear to act as “immunomodulators” and, as such, are being researched for their potential role in AIDS and cancer. Presently, the only human studies on astragalus indicate that it can prevent white blood cell numbers from falling in people given chemotherapy and radiotherapy and can elevate antibody levels in healthy people. Maitake has only been studied in animals as a way to increase immune function. The primary immuno-activating polysaccharide found in these mushrooms, beta-D-glucan, is well absorbed when taken orally and is currently under investigation as a supportive tool for HIV infection. Results from future research will improve the understanding of the possible benefits of these mushrooms and their constituents.
1 Star
Infection
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Astragalus supports the immune system and protects against microbes.

Herbs that support a person’s immune system in the fight against microbes include the following: American ginseng, andrographis, Asian ginseng, , coriolus, eleuthero, ligustrum, maitake, picrorhiza, reishi, schisandra, and shiitake.

1 Star
Lupus
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Though a safe amount has not been established, one preliminary trial found that this herb could decrease overactive immune function in people with this disease.

One Chinese preliminary trial also found that could decrease overactive immune function in people with systemic lupus erythematosus. However, much more research is needed to know whether astragalus is safe in lupus or any other autoimmune disease.

Traditional Use (May Not Be Supported by Scientific Studies)

Shen Nung, the founder of Chinese herbal medicine, classified astragalus as a superior herb in his classical treatise Shen Nung Pen Tsao Ching (circa A.D. 100). The Chinese name huang qi translates as “yellow leader,” referring to the yellow color of the root and its status as one of the most important tonic herbs. Traditional Chinese Medicine used this herb for night sweats, deficiency of chi (e.g., fatigue, weakness, and loss of appetite), and diarrhea.2

Information about Astragalus

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