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Cheapest FOS (Inulin) on iHerb

Ranked by real cost per 10 mg of FOS (Inulin) — cheapest value first.

Prices updated Jul 25, 2026 · 5 products · Prices in USD

The priciest option here costs about 4.1× more per 10 mg of FOS (Inulin) than the best-value pick Deva. 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 mg
1
Deva, Vegan Tuba Prime®, Multivitamin, High Potency, 90 Coated Tablets
Deva, Vegan Tuba Prime®, Multivitamin, High Potency, 90 Coated Tablets
Deva
150 mg4513.590.020View on iHerb →
2
California Gold Nutrition, Probiotic UTI Support with Fructooligosaccharides, Cranberry Extract, Three-Leaf Caper Extract, and Proprietary Digestive Blend, 60 Veggie Capsules
California Gold Nutrition, Probiotic UTI Support with Fructooligosaccharides, Cranberry Extract, Three-Leaf Caper Extract, and Proprietary Digestive Blend, 60 Veggie Capsules
California Gold Nutrition
200 mg3012.940.022View on iHerb →
3
Deva, Vegan Tuba Prime™, Multivitamin, Iron Free, High Potency, 90 Coated Tablets
Deva, Vegan Tuba Prime™, Multivitamin, Iron Free, High Potency, 90 Coated Tablets
Deva
150 mg4516.990.025View on iHerb →
4
Futurebiotics, Women's Probiotic Plus Prebiotic, 60 Vegetarian Capsules
Futurebiotics, Women's Probiotic Plus Prebiotic, 60 Vegetarian Capsules
Futurebiotics
100 mg3019.990.067View on iHerb →
5
California Gold Nutrition, Cranberry & Probiotic Gummies with Cranberry Concentrate, Fructooligosaccharides and Bacillus coagulans, Natural Cranberry, 90 Vegetarian Gummies
California Gold Nutrition, Cranberry & Probiotic Gummies with Cranberry Concentrate, Fructooligosaccharides and Bacillus coagulans, Natural Cranberry, 90 Vegetarian Gummies
California Gold Nutrition
50 mg4518.680.083View on iHerb →

How we rank FOS (Inulin)

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.