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Cheapest Grapefruit Seed Extract on iHerb

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

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

The priciest option here costs about 66.6× more per 100 mg of Grapefruit Seed Extract than the best-value pick Nutricost. 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
Nutricost, Grapefruit Seed Extract, 2,000 mg, 60 Capsules
Nutricost, Grapefruit Seed Extract, 2,000 mg, 60 Capsules
Nutricost
500 mg6013.950.047View on iHerb →
2
NutriBiotic, Grapefruit Seed Extract, Maximum Strength, 250 mg, 60 Capsules
NutriBiotic, Grapefruit Seed Extract, Maximum Strength, 250 mg, 60 Capsules
NutriBiotic
250 mg6011.990.080View on iHerb →
3
NutriBiotic, DefensePlus®, Maximum Strength, 90 Vegan Tablets
NutriBiotic, DefensePlus®, Maximum Strength, 90 Vegan Tablets
NutriBiotic
250 mg9022.490.100View on iHerb →
4
NutriBiotic, DefensePlus®, Maximum Strength, 45 Vegan Tablets
NutriBiotic, DefensePlus®, Maximum Strength, 45 Vegan Tablets
NutriBiotic
250 mg4513.120.117View on iHerb →
5
Kirkman Labs, Grapefruit Seed Extract, 125 mg, 120 Capsules
Kirkman Labs, Grapefruit Seed Extract, 125 mg, 120 Capsules
Kirkman Labs
125 mg12017.620.118View on iHerb →
6
NutriBiotic, High Potency Grapefruit Seed Extract with Echinacea & Artemisia Annua, 125 mg, 90 Vegan Capsules
NutriBiotic, High Potency Grapefruit Seed Extract with Echinacea & Artemisia Annua, 125 mg, 90 Vegan Capsules
NutriBiotic
125 mg9018.740.167View on iHerb →
7
Rule One Proteins, Burn™, Thermo Weight Management, Peach Mango, 7.41 oz (210 g)
Rule One Proteins, Burn™, Thermo Weight Management, Peach Mango, 7.41 oz (210 g)
Rule One Proteins
25 mg302.000.267View on iHerb →
8
Solaray, Yeast-Cleanse, 180 VegCaps
Solaray, Yeast-Cleanse, 180 VegCaps
Solaray
240 mg3031.090.432View on iHerb →
9
Solaray, Yeast-Cleanse™, 90 VegCaps
Solaray, Yeast-Cleanse™, 90 VegCaps
Solaray
240 mg1517.690.491View on iHerb →
10
Renew Life, CandiSmart™, 15-Day Program, 2 Count
Renew Life, CandiSmart™, 15-Day Program, 2 Count
Renew Life
75 mg3030.731.37View on iHerb →
11
BIOptimizers, Para Guardian, 90 Veggie Caps
BIOptimizers, Para Guardian, 90 Veggie Caps
BIOptimizers
36 mg9044.991.39View on iHerb →
12
Rule One Proteins, Burn™, Thermo Weight Management, Watermelon, 7.41 oz (210 g)
Rule One Proteins, Burn™, Thermo Weight Management, Watermelon, 7.41 oz (210 g)
Rule One Proteins
25 mg3023.233.10View on iHerb →
13
Rule One Proteins, Burn™, Thermo Weight Management, Blue Razz Lemonade, 7.41 oz (210 g)
Rule One Proteins, Burn™, Thermo Weight Management, Blue Razz Lemonade, 7.41 oz (210 g)
Rule One Proteins
25 mg3023.233.10View on iHerb →
14
Rule One Proteins, Burn™, Thermo Weight Management, Snow Cone , 7.41 oz (210 g)
Rule One Proteins, Burn™, Thermo Weight Management, Snow Cone , 7.41 oz (210 g)
Rule One Proteins
25 mg3023.233.10View on iHerb →

How we rank Grapefruit Seed 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.