Astragalus (Huang Qi) Benefits: The Immune and Energy Herb Explained

Written and reviewed by Dr. Michael Koh, Chinese herbal medicine practitioner at The Oriental Herb, Cliffside Park, NJ

If ginseng is the famous tonic, astragalus is the working one – cheaper, gentler, used in far more everyday formulas, and the herb a Chinese herbalist thinks of first when someone catches every cold, tires easily, sweats at the slightest effort or heals slowly. Huang Qi, “yellow leader”, is the root of Astragalus membranaceus, and this post covers its real astragalus benefits, the research, how it is taken, and the two situations in which it should not be used. It belongs with our page on Chinese herbs for the immune system.

What Huang Qi does

Astragalus tonifies Qi and strengthens the Wei Qi – the body’s surface defense – lifts sagging Qi, stops sweating from weakness, promotes urination to reduce swelling, and helps wounds and ulcers heal. Translated: for the person who is tired but not exhausted, who gets sick often and takes long to recover, who sweats with mild exertion, who has swelling in the legs, or whose skin heals slowly. It is sweet and slightly warm, taken for weeks to months, and it is safe enough that in China it is cooked into soups for the whole family in winter.

The formulas it anchors

• Yu Ping Feng San (Jade Windscreen) – astragalus, Bai Zhu and Fang Feng; the formula for people who catch every cold and for hay fever prevention (see seasonal allergies).
• Bu Zhong Yi Qi Tang – the great formula for fatigue with sagging Qi; see our full guide.
• Dang Gui Bu Xue Tang – astragalus five parts to Dang Gui one part, for anemia-type Blood deficiency after blood loss or childbirth.
• Fang Ji Huang Qi Tang – for fluid retention and weight with weakness (see herbal remedies for weight loss).
• Huang Qi Gui Zhi Wu Wu Tang – for numbness and cold limbs; used in neuropathy.

What the research says

Astragalus polysaccharides and saponins (astragaloside IV) have been studied for immune cell activity, for fatigue and quality of life in people undergoing chemotherapy (with their oncologist’s agreement), for fasting glucose and insulin sensitivity, for kidney function in diabetic nephropathy, and for the heart in chronic heart failure. The trials are mostly small and from China; the direction is consistently positive and the effects modest. For blood sugar see our blood sugar support page.

How to take it

9–30 g of dried root in a decoction (simmered 30–45 minutes – it is a tough root), or granules or capsules equivalent to that; the higher end for sagging Qi and fluid retention. The simplest home use: a few slices simmered with chicken or in a bean soup, once or twice a week through autumn and winter. It combines beautifully with jujube dates, goji and Dang Shen.

When not to take astragalus

Not during an acute cold, flu or fever – it “closes the door” on the invader and can prolong it; stop at the first sore throat and restart when recovered. Not with a very hot, red, irritable constitution without balancing herbs. Caution with immunosuppressants after transplant and with autoimmune disease on immune-modulating drugs – ask your doctor. It is otherwise one of the safest herbs in the pharmacopoeia.

FAQ

Astragalus or echinacea?

Echinacea is for the first days of a cold; astragalus is for the months before it, building resistance. They do different jobs.

Is it good for energy?

For the tired-and-sweaty, catches-everything type, yes – it is the base of most energy formulas; see Chinese herbs for energy. For wired exhaustion with insomnia, no.

Can children take it?

Yes, in soup or small doses, for the child who is always sick in winter. Ask for the dose.

This article is for educational purposes only and is not medical advice. Chinese herbs are not a replacement for diagnosis or treatment from your physician. Always tell your doctor and your herbalist about every medication and supplement you take.