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Cheapest Astragalus Extract on iHerb

Ranked by real cost per 100 mg of Astragalus Extract — cheapest value first.

Prices updated Jul 25, 2026 · 14 products · Prices in USD

The priciest option here costs about 65.4× more per 100 mg of Astragalus Extract than the best-value pick Nature's Answer. For the same daily dose, choosing by cost per unit instead of sticker price can meaningfully cut your yearly spend.
#ProductDoseServingsPrice (USD)Cost per 100 mg
1
Nature's Answer, Astragalus Root, Fluid Extract, Alcohol-Free, 2,000 mg, 1 fl oz (30 ml)
Nature's Answer, Astragalus Root, Fluid Extract, Alcohol-Free, 2,000 mg, 1 fl oz (30 ml)
Nature's Answer
2,000 mg1512.740.043View on iHerb →
2
Kyolic, Aged Garlic Extract™, Formula 103, 300 Capsules
Kyolic, Aged Garlic Extract™, Formula 103, 300 Capsules
Kyolic
100 mg15033.640.224View on iHerb →
3
Healths Harmony, Adrenal Health & Balance, 120 Capsules
Healths Harmony, Adrenal Health & Balance, 120 Capsules
Healths Harmony
50 mg12027.500.458View on iHerb →
4
Healths Harmony, Adrenal System Support, 60 Capsules
Healths Harmony, Adrenal System Support, 60 Capsules
Healths Harmony
50 mg6021.970.732View on iHerb →
5
Vibrant Health, Green Vibrance +25 Billion Probiotics, Version 21.0, 32.21 oz (913 g)
Vibrant Health, Green Vibrance +25 Billion Probiotics, Version 21.0, 32.21 oz (913 g)
Vibrant Health
190 mg83130.380.827View on iHerb →
6
Vibrant Health, Green Vibrance® +25 Billion Probiotics, Version 21.0, Original, 11.64 oz (330 g)
Vibrant Health, Green Vibrance® +25 Billion Probiotics, Version 21.0, Original, 11.64 oz (330 g)
Vibrant Health
190 mg3056.880.998View on iHerb →
7
Vibrant Health, Green Vibrance, Version 21.0, Blueberry Lemon, 10.3 oz (292 g)
Vibrant Health, Green Vibrance, Version 21.0, Blueberry Lemon, 10.3 oz (292 g)
Vibrant Health
190 mg2558.631.23View on iHerb →
8
Vibrant Health, Green Vibrance +25 Billion Probiotics, Version 21.0, Chocolate Coconut, 12.35 oz (350 g)
Vibrant Health, Green Vibrance +25 Billion Probiotics, Version 21.0, Chocolate Coconut, 12.35 oz (350 g)
Vibrant Health
190 mg2558.631.23View on iHerb →
9
LifeSeasons, Breathe-X®, Allergy & Sinus Support, 90 Veg Capsules
LifeSeasons, Breathe-X®, Allergy & Sinus Support, 90 Veg Capsules
LifeSeasons
100 mg3039.991.33View on iHerb →
10
Pure Essence, EnergyPlus™, 120 Tablets
Pure Essence, EnergyPlus™, 120 Tablets
Pure Essence
50 mg6044.521.48View on iHerb →
11
Vibrant Health, Green Vibrance® +25 Billion Probiotics, Version 21.0, 15 To Go Packets, 5.82 oz (165 g)
Vibrant Health, Green Vibrance® +25 Billion Probiotics, Version 21.0, 15 To Go Packets, 5.82 oz (165 g)
Vibrant Health
190 mg1542.881.50View on iHerb →
12
Vibrant Health, Green Vibrance, Version 21.0, 240 Vegicaps
Vibrant Health, Green Vibrance, Version 21.0, 240 Vegicaps
Vibrant Health
190 mg1551.631.81View on iHerb →
13
Vibrant Health, Maximum Vibrance®, Version 7.0, Vanilla Bean, 21.5 oz (610 g)
Vibrant Health, Maximum Vibrance®, Version 7.0, Vanilla Bean, 21.5 oz (610 g)
Vibrant Health
190 mg1579.202.78View on iHerb →
14
Vibrant Health, Maximum Vibrance®, Version 7, Chocolate Chunk, 23.2 oz (659 g)
Vibrant Health, Maximum Vibrance®, Version 7, Chocolate Chunk, 23.2 oz (659 g)
Vibrant Health
190 mg1579.202.78View on iHerb →

How we rank Astragalus Extract

Two supplements can list the same dose per serving yet cost very differently once you account for how many servings are in the bottle. We calculate the total nutrient in each container (dose per serving × servings per container), divide the current price by that total, and rank by the resulting cost per unit. Lower is better. Because prices are refreshed automatically, this ranking reflects today's iHerb pricing rather than a snapshot from months ago.

Cost per unit is a starting point, not the whole story — the ideal form, third-party testing, and other ingredients matter too. Always check the label and consult a healthcare professional before starting a supplement.

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Prices update automatically and may differ from iHerb at checkout. Rankings are based on cost per unit of the listed nutrient and are for informational purposes only — not medical advice. Links to iHerb are affiliate links.