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Astragalus 500 mg

Swanson
4.6
★ ★ ★ ★ ★
(79 ratings)
Astragalus 500 mg
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Score74
A substantial species-identified astragalus extract with a named marker. Missing marker concentration and extraction details limit precision.
How scoring works
Quantity:120 Capsule(s) • (120 servings)
Goals:
Immunity

Score 74

A substantial species-identified astragalus extract with a named marker. Missing marker concentration and extraction details limit precision.
How scoring works

Also available as

1 option
940mg • 100 servings Astragalus 470 mg • 100 Capsule(s) • 100 servings $7.69 ($0.07 per serving)
$46.43($0.38 per serving)
iHerb
$ 0.00
Amazon
$ 46.43
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Analysis

The capsule supplies 500 mg of Astragalus membranaceus extract, a useful targeted amount. Calycosin glucoside is identified as a relevant marker, but its concentration is not stated.

The single botanical offers a coherent approach to longer-term immune resilience. It does not provide vitamin C, vitamin D, zinc, or other foundational immune nutrients.

The formula suits users who want a substantial astragalus extract with clear species identification. A more fully standardized product would be preferable for people who want predictable active exposure.

Who is it for
  • Adults seeking a substantial astragalus extract
  • People who value species identification
  • Users preferring a focused capsule
Best for
  • Daily botanical immune support
  • Single-ingredient routines
  • Longer-term resilience support

Pros

  • Identifies Astragalus membranaceus
  • Provides a full extract amount
  • Names a relevant flavonoid marker

Cons

  • Marker concentration is not disclosed
  • Root part and extract ratio are missing
  • No foundational immune nutrients

Warnings

  • Astragalus may interfere with immunosuppressant medicines by affecting immune activity.
  • People with autoimmune conditions should confirm suitability with their clinician.

Nutrient quality

82 Highest impact

The extract names a relevant active marker, though its concentration and botanical identity remain incomplete. The supplied amount supports practical use for focused use.

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Ingredient transparency

81 Highest impact

The main active amounts are clearly listed, making the core formula possible to assess. Intake directions, non-active ingredients, and key botanical-quality details are absent from the supplied data.

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Customer satisfaction

60 Moderate impact

The supplied average is strong and the response volume is limited. No detailed feedback is provided to assess recurring complaints or fit with the intended purpose.

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Value for money

68 High impact

The serving may be economical, but incomplete botanical verification limits confidence in value. A better specified or more concentrated astragalus product would provide a stronger comparison.

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Report analysis

Goals

Immunity
Immunity
Impact
High effect
C Goal FitC+ Strength of SupportD CoverageA- Formula Quality

Astragalus is traditionally used for immune resilience, but it provides a narrower and less established pathway than essential immune nutrients. Human evidence for meaningful infection outcomes is limited compared with vitamin C, vitamin D, or zinc.

The 500 mg extract amount is substantial enough to avoid a token-dose penalty. The botanical species and amount are clear, but root part, extract ratio, and marker concentration are not disclosed.

Study evidence
Astragalus Supportive 16 studies

Ingredients

IngredientAmount per serving
Astragalus membranaceus extract (Calycosin 7-O-Beta D-Glucopyranoside)
 500 mg
Adults 18–50
Report overview
Astragalus (Calycosin 7-O-Beta D-Glucopyranoside) · 500 mg OverallScore62
F Active Ingredient Quality & BioavailabilityA Dose, Safety & Label TransparencyC Value
Astragalus membranaceus extract provides a substantial dose and names a flavonoid marker, but no marker concentration, extract ratio, or root part is disclosed. The exact amount is clear, while purity claims and complete excipient details are absent. Its normalized cost falls in the fair range for the extract supplied.
View ingredientView products
Loading alternative details
81 Performance

Astragalus Extract 500 mg

NOW
<p>Its 500 mg astragalus root extract identifies polysaccharides, making the main ingredient easier to assess than an uncharacterized herb amount. Compared with the original, that ingredient profile is better characterized or more closely aligned with immune support; the species and active-marker concentration remain unstated.</p>
78 Performance

Astragalus

Herb Pharm
<p>Its label identifies an accepted astragalus species and the root source at 665 mg, making the botanical identity clearer. Compared with the original, that ingredient profile is better characterized or more closely aligned with immune support; no active-marker concentration is provided.</p>
77 Performance

Astragalus Root 2000 mg

Nature's Answer
<p>Its label identifies an accepted astragalus species and the root source at 2000 mg, making the botanical identity clearer. Compared with the original, that ingredient profile is better characterized or more closely aligned with immune support; no active-marker concentration is provided.</p>
75 Budget

Astragalus 550 mg

Nutricost
<p>Its 550 mg astragalus root powder provides a simple, focused herbal option without unrelated active ingredients. Compared with the original, it lowers the serving cost while retaining relevant astragalus support, although it is not an identified standardized extract, so active strength is uncertain.</p>
78 Budget

Astragalus

Paradise
<p>Its focused astragalus root extract keeps the formula closely aligned with the original product’s main ingredient. Compared with the original, it lowers the serving cost while retaining relevant astragalus support, although the species and active-marker concentration remain unstated.</p>
78 Budget

Astragalus

Nature's Way
<p>Its astragalus root extract names astragalosides and is paired with additional whole astragalus, giving the formula a more clearly characterized herbal core. Compared with the original, it lowers the serving cost while retaining relevant astragalus support, although the label names the marker but does not state its concentration.</p>
77 Value

Full Spectrum Astragalus Extract 500 mg

Planetary Herbals
<p>Its focused astragalus root extract keeps the formula closely aligned with the original product’s main ingredient. Compared with the original, a lower serving cost and the disclosed ingredient profile create a useful quality-to-cost balance, although the species and active-marker concentration remain unstated.</p>
74 Value

Astragalus 500 mg

Nature's Answer
<p>Its astragalus root extract names astragalosides and is paired with additional whole astragalus, giving the formula a more clearly characterized herbal core. Compared with the original, a lower serving cost and the disclosed ingredient profile create a useful quality-to-cost balance, although the label names the marker but does not state its concentration.</p>
76 Value

Astragalus 1000 mg

AN Amazing Nutrition Amazing Formulas
<p>Its focused astragalus extract preserves the original product’s main herbal purpose in a concise formula. Compared with the original, a lower serving cost and the disclosed ingredient profile create a useful quality-to-cost balance, although the species, plant part, and active-marker concentration remain unclear.</p>
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Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. [Effect of intravenous drip infusion of cyclophosphamide with high-dose Astragalus injection in treating lupus nephritis].
    Su L; Mao JC; Gu JH · Zhong xi yi jie he xue bao = Journal of Chinese integrative medicine · 2008
    Randomized trial43 participantsImmunity forAstragalus
  2. [Effect of compound astragalus recipe on lymphocyte subset, immunoglobulin and complements in patients with myasthenia gravia].
    Niu GH; Sun X; Zhang CM · Zhongguo Zhong xi yi jie he za zhi Zhongguo Zhongxiyi jiehe zazhi = Chinese journal of integrated traditional and Western medicine · 2010
    Randomized trial60 participantsImmunity forAstragalus
  3. Oral Astragalus (Huang qi) for preventing frequent episodes of acute respiratory tract infection in children.
    Su G; Chen X; Liu Z; Yang L; Zhang L; Stålsby Lundborg C; Wen Z; Guo X; Qin X; Liang J; Liu X · The Cochrane database of systematic reviews · 2017
    Systematic reviewImmunity forAstragalus
  4. Astragalus polysaccharides combined with radiochemotherapy for cervical cancer: a systematic review and meta-analysis of randomized controlled studies.
    Sun T; Zhao R; Zhang Y; Li D; Shan X; Tang X; Zheng Y · Frontiers in pharmacology · 2025
    Meta-analysis776 participants9 studies pooledImmunity forAstragalus
  5. Astragalus mongholicus (Fisch.) Bge Improves Peripheral Treg Cell Immunity Imbalance in the Children With Viral Myocarditis by Reducing the Levels of miR-146b and miR-155.
    Zhang Z; Dai X; Qi J; Ao Y; Yang C; Li Y · Frontiers in pediatrics · 2020
    Randomized trial68 participantsImmunity forAstragalus
  6. [Clinical study on effect of Astragalus in efficacy enhancing and toxicity reducing of chemotherapy in patients of malignant tumor].
    Duan P; Wang ZM · Zhongguo Zhong xi yi jie he za zhi Zhongguo Zhongxiyi jiehe zazhi = Chinese journal of integrated traditional and Western medicine · 2003
    Randomized trial120 participantsImmunity forAstragalus
  7. [Modulatory effect of Astragalus membranaceus on Th1/Th2 cytokine in patients with herpes simplex keratitis].
    Mao SP; Cheng KL; Zhou YF · Zhongguo Zhong xi yi jie he za zhi Zhongguo Zhongxiyi jiehe zazhi = Chinese journal of integrated traditional and Western medicine · 2004
    Randomized trial168 participantsImmunity forAstragalus