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Astragalus Root

Immune · adaptogen · longevity

Moderate evidenceVegan492 studies on PubMedRead the research
Written to our editorial standards · reviewed against published research· Updated 30 May 2026
Last reviewed: May 30, 2026

Astragalus Root: Immune · adaptogen · longevity. A foundational Chinese tonic herb. Supports immune resilience, energy under stress, and telomerase activity. Standard dose 470 mg, taken in the morning, about $16/month. Evidence rating: moderate evidence.

Where to buy

Nature's Way Astragalus Root 470mg
Recommended
Nature's Way, Astragalus Root
470 mg · Morning · ~$16/month

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Nature's Way Astragalus Root 470mgBest Value
Astragalus Root 470mg
Nature's Way
180 veg caps · $16 · ★ 4.7
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NOW Foods
90 veg caps · $11 · ★ 4.6
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Astragalus
Nature's Way
180 capsules · $13 · ★ 4.6
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Solaray AstragalusPremium
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100 capsules · $12 · ★ 4.5
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60 capsules · $20 · ★ 4.6
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What is Astragalus Root?

Astragalus (Astragalus membranaceus) is a foundational herb in traditional Chinese medicine, classified as a Qi tonic. Its primary actives, astragalosides and polysaccharides, support immune cell activity, reduce upper respiratory infection frequency, and have been investigated for cardiovascular and renal protective effects. Astragaloside IV in particular activates telomerase, a longevity-relevant mechanism. Standard dose is 500-1500 mg per day of root or 250-500 mg of standardized extract. Avoid in active autoimmune conditions where immune stimulation is undesirable.

A foundational Chinese tonic herb. Supports immune resilience, energy under stress, and telomerase activity.

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Common questions

What is Astragalus Root?
Astragalus (Astragalus membranaceus) is a foundational herb in traditional Chinese medicine, classified as a Qi tonic. Its primary actives, astragalosides and polysaccharides, support immune cell activity, reduce upper respiratory infection frequency, and have been investigated for cardiovascular and renal protective effects. Astragaloside IV in particular activates telomerase, a longevity-relevant mechanism. Standard dose is 500-1500 mg per day of root or 250-500 mg of standardized extract. Avoid in active autoimmune conditions where immune stimulation is undesirable.
What is Astragalus Root used for?
Immune · adaptogen · longevity. A foundational Chinese tonic herb. Supports immune resilience, energy under stress, and telomerase activity.
What is the standard dose of Astragalus Root?
470 mg, typically taken in the morning. Approximate cost is $16 per month.
Who should avoid Astragalus Root?
Use extra caution, and speak to a clinician first, if you are autoimmune condition.
How strong is the evidence for Astragalus Root?
Moderate evidence for its primary uses. See the full study list on the research page.

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