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Cheapest PreforPro on iHerb

Ranked by real cost per 10 mg of PreforPro — cheapest value first.

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

The priciest option here costs about 44.4× more per 10 mg of PreforPro than the best-value pick Garden of Life. 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
Garden of Life, Probiotics Women's pH, 50 Billion, 30 Vegetarian Capsules
Garden of Life, Probiotics Women's pH, 50 Billion, 30 Vegetarian Capsules
Garden of Life
220 mg3029.390.045View on iHerb →
2
Garden of Life, Probiotics Gas & Bloating, 50 Billion, 30 Vegetarian Capsules
Garden of Life, Probiotics Gas & Bloating, 50 Billion, 30 Vegetarian Capsules
Garden of Life
220 mg3029.390.045View on iHerb →
3
Garden of Life, Probiotics, 30 Mini Vegetarian Capsules
Garden of Life, Probiotics, 30 Mini Vegetarian Capsules
Garden of Life
140 mg3020.990.050View on iHerb →
4
Garden of Life, Probiotics Immune, 30 Vegetarian Capsules
Garden of Life, Probiotics Immune, 30 Vegetarian Capsules
Garden of Life
110 mg3029.390.089View on iHerb →
5
Garden of Life, Probiotics Calm, 50 Billion, 30 Vegetarian Capsules
Garden of Life, Probiotics Calm, 50 Billion, 30 Vegetarian Capsules
Garden of Life
100 mg3029.390.098View on iHerb →
6
Garden of Life, Probiotics, 30 Vegetarian Capsules
Garden of Life, Probiotics, 30 Vegetarian Capsules
Garden of Life
100 mg3034.290.114View on iHerb →
7
Doctor's Best, Women's Digestive Probiotic Prebiotic with Cranberry, 4 Billion CFU, 30 Veggie Caps
Doctor's Best, Women's Digestive Probiotic Prebiotic with Cranberry, 4 Billion CFU, 30 Veggie Caps
Doctor's Best
15 mg3019.990.444View on iHerb →
8
pH-D Feminine Health, Women's Probiotic and Prebiotics with Cranberry, 30 Capsules
pH-D Feminine Health, Women's Probiotic and Prebiotics with Cranberry, 30 Capsules
pH-D Feminine Health
15 mg3023.390.520View on iHerb →
9
Nature's Craft, Prebiotic + Probiotic, 2.2 Billion CFU, 60 Capsules
Nature's Craft, Prebiotic + Probiotic, 2.2 Billion CFU, 60 Capsules
Nature's Craft
15 mg3025.990.578View on iHerb →
10
AZO, Dual Protection, Urinary + Vaginal Support, 30 Once Daily Capsules
AZO, Dual Protection, Urinary + Vaginal Support, 30 Once Daily Capsules
AZO
15 mg3032.880.731View on iHerb →
11
BioTRUST, Pro-X10™, 60 Veggie Capsules
BioTRUST, Pro-X10™, 60 Veggie Capsules
BioTRUST
8 mg6033.000.733View on iHerb →
12
Econugenics, PowerBiotic, 30 Vegetarian Capsules
Econugenics, PowerBiotic, 30 Vegetarian Capsules
Econugenics
15 mg3047.501.06View on iHerb →
13
Ritual, Synbiotic+®, Mint, 30 Vegan Capsules
Ritual, Synbiotic+®, Mint, 30 Vegan Capsules
Ritual
15 mg3059.991.33View on iHerb →
14
Cymbiotika, Probiotic, 50 Billion CFU, 90 Capsules
Cymbiotika, Probiotic, 50 Billion CFU, 90 Capsules
Cymbiotika
15 mg3088.991.98View on iHerb →

How we rank PreforPro

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.