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Cheapest Grapefruit (seed extract) on iHerb

Ranked by real cost per 10 mcg of Grapefruit (seed extract) — cheapest value first.

Prices updated Jul 25, 2026 · 7 products · Prices in USD

The priciest option here costs about 48.1× more per 10 mcg of Grapefruit (seed extract) than the best-value pick Metagenics. For the same daily dose, choosing by cost per unit instead of sticker price can meaningfully cut your yearly spend.
#ProductDoseServingsPrice (USD)Cost per 10 mcg
1
Metagenics, BioSom®, 2 fl oz (59.5 ml)
Metagenics, BioSom®, 2 fl oz (59.5 ml)
Metagenics
350 mcg8530.950.010View on iHerb →
2
Solaray, Grapefruit Seed Extract With Zinc, Beta Glucan & Astragalus, 60 VegCaps
Solaray, Grapefruit Seed Extract With Zinc, Beta Glucan & Astragalus, 60 VegCaps
Solaray
250 mg3018.490.025View on iHerb →
3
DaVinci Laboratories, Vira-Shield, 120 Tablets
DaVinci Laboratories, Vira-Shield, 120 Tablets
DaVinci Laboratories
200 mg6045.640.038View on iHerb →
4
Natural Balance, Parazide Clenz, 60 Tablets
Natural Balance, Parazide Clenz, 60 Tablets
Natural Balance
100 mg3017.490.058View on iHerb →
5
Solaray, ImmuFight™, Respiratory Support, 90 VegCaps
Solaray, ImmuFight™, Respiratory Support, 90 VegCaps
Solaray
100 mg3025.690.086View on iHerb →
6
Solaray, ImmuFight™, Ultimate Immune Support, 90 VegCaps
Solaray, ImmuFight™, Ultimate Immune Support, 90 VegCaps
Solaray
300 mg1028.290.094View on iHerb →
7
Codeage, Leaky Gut Formula, 60 Vegetable Capsules
Codeage, Leaky Gut Formula, 60 Vegetable Capsules
Codeage
20 mg3029.990.500View 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.