What dose of Astragalus is effective for Kidney function?

Astragalus at 1000 mg lands inside the studied 1000-3000 mg window. DoseRank scores this product's dose fit at 67 out of 100.

How much does the best Kidney function supplement cost?

NOW Foods, Astragalus, 500 mg, 100 Veg Capsules works out at $0.14 per serving. $0.14 per serving — mid price tier for this outcome. The cheapest ranked pick here is $0.04 per serving.

Does DoseRank get paid to rank a product first?

No. Retailer links may be affiliate links, but rankings and placement are never paid. Every product is scored by the same public model, and the ranking is recomputed from the underlying product data rather than edited by hand.

The short answer · Kidney function

Take astragalus for kidney function. This is the one to buy.

NOW Foods, Astragalus, 500 mg, 100 Veg Capsules

4.7· 3,546 ratings· $0.14/serving

DoseRank score82

Astragalus 1000 mg — inside the studied 1000-3000 mg window

Of 427 products scored for Kidney function, NOW Foods, Astragalus, 500 mg, 100 Veg Capsules ranks #1 with a DoseRank score of 82. Astragalus has moderate human evidence for this outcome.

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Cheaper alternative$0.04 per servingNutricost, Organic Astragalus Root Powder, Unflavored, 16.2 oz (454 g)

Retailer links may be affiliate links. Rankings and placement are never paid.

The form“Why Astragalus — not Cordyceps Mushroom?”

Astragalus has moderate human evidence for this outcome.

AstragalusThe pick
Moderate evidence · 1000 mg
Adaptogenic root from Traditional Chinese Medicine, valued mainly for immune-modulating polysaccharides; popular claims about telomerase and longevity remain weakly supported.
Cordyceps Mushroom
Moderate evidence · 1500 mg
Parasitic fungus with a long history in traditional Chinese medicine; primarily used to support energy, endurance, and respiratory function.

Buy the #1 pick

The dose“Is the dose actually effective?”

Astragalus at 1000 mg lands inside the studied 1000-3000 mg window.

Astragalus

Studied window 1000-3000 mg · this pick 1000 mg

The ranking“Why should I trust this pick?”

Strong trust signals — consistently high marks from verified buyer ratings. Each product gets a DoseRank score blending clinical strength, evidence, dose fit, trust and value. Retailer links may be affiliate links — the scoring model decides placement, never payment from a brand.

427 products scored
Never paid placement
Evidence level: Moderate · 78
123 brands
5 ingredients

See the full analysis — every score, every product How the ranking works

The price“Can I do better than $0.14 a serving?”

$0.14 per serving — mid price tier for this outcome. The cheapest ranked pick here is $0.04 per serving.

2
Nutricost, Organic Astragalus Root Powder, Unflavored, 16.2 oz (454 g)Score 81 · $0.04/serving
iHerb

Why not the absolute cheapest? The DoseRank score also weighs clinical strength, evidence, dose fit and trust — the very cheapest listings rarely hold up everywhere else.

Ready?

The #1 pick is $0.14 a serving.

NOW Foods, Astragalus, 500 mg, 100 Veg Capsules — in stock at a tracked retailer.

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Questions

Frequently asked

NOW Foods, Astragalus, 500 mg, 100 Veg Capsules ranks #1 for Kidney function with a DoseRank score of 82. The score blends clinical strength, evidence, dose fit, trust signals and value across 427 products scored for this outcome.

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Other outcomes

Albuminuria or proteinuriaProtein leakage into urine indicating kidney damage risk.

Frequently asked