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Cheapest Probiotics (Bacillus subtilis DE111) on iHerb

Ranked by real cost per Billion of Probiotics (Bacillus subtilis DE111) — cheapest value first.

Prices updated Jul 25, 2026 · 11 products · Prices in USD

The priciest option here costs about 1.9× more per Billion of Probiotics (Bacillus subtilis DE111) than the best-value pick Vega. For the same daily dose, choosing by cost per unit instead of sticker price can meaningfully cut your yearly spend.
#ProductDoseServingsPrice (USD)Cost per Billion
1
Vega, Plant-Based Protein, Performance Protein + Recovery, Creamy Chocolate, 4 lb 5.9 oz (1.98 kg)
Vega, Plant-Based Protein, Performance Protein + Recovery, Creamy Chocolate, 4 lb 5.9 oz (1.98 kg)
Vega
2 Billion4585.990.955View on iHerb →
2
Vega, Plant-Based Protein, Performance Protein + Recovery, Creamy Vanilla, 4 lb 1.8 oz (1.86 kg)
Vega, Plant-Based Protein, Performance Protein + Recovery, Creamy Vanilla, 4 lb 1.8 oz (1.86 kg)
Vega
2 Billion4585.990.955View on iHerb →
3
Vega, Plant-Based Protein, Performance Protein + Recovery, Mocha, 4 lb 3.9 oz (1.92 kg)
Vega, Plant-Based Protein, Performance Protein + Recovery, Mocha, 4 lb 3.9 oz (1.92 kg)
Vega
2 Billion4585.990.955View on iHerb →
4
Vega, Plant-Based Protein, Performance Protein + Recovery, Berry, 4 lb 3 oz (1.89 kg)
Vega, Plant-Based Protein, Performance Protein + Recovery, Berry, 4 lb 3 oz (1.89 kg)
Vega
2 Billion4585.990.955View on iHerb →
5
Vega, Plant-Based Protein, Performance Protein + Recovery, Peanut Butter, 4 lb 4.1 oz (1.93 kg)
Vega, Plant-Based Protein, Performance Protein + Recovery, Peanut Butter, 4 lb 4.1 oz (1.93 kg)
Vega
2 Billion4585.990.955View on iHerb →
6
Vega, Plant-Based Protein, Performance Protein + Recovery, Berry, 1 lb 12 oz (801 g)
Vega, Plant-Based Protein, Performance Protein + Recovery, Berry, 1 lb 12 oz (801 g)
Vega
2 Billion1942.991.13View on iHerb →
7
Vega, Plant-Based Protein, Performance Protein + Recovery, Creamy Chocolate, 1 lb 13.5 oz (837 g)
Vega, Plant-Based Protein, Performance Protein + Recovery, Creamy Chocolate, 1 lb 13.5 oz (837 g)
Vega
2 Billion1942.991.13View on iHerb →
8
Vega, Plant-Based Protein, Performance Protein + Recovery, Mocha, 1 lb 13 oz (812 g)
Vega, Plant-Based Protein, Performance Protein + Recovery, Mocha, 1 lb 13 oz (812 g)
Vega
2 Billion1942.991.13View on iHerb →
9
Vega, Performance, Protein + Recovery, Peanut Butter, 1 lb 12 oz (815 g)
Vega, Performance, Protein + Recovery, Peanut Butter, 1 lb 12 oz (815 g)
Vega
2 Billion1942.991.13View on iHerb →
10
Vega, Plant-Based Protein, Performance Protein + Recovery, Creamy Vanilla, 12 Packs, 1.5 oz (41 g) Each
Vega, Plant-Based Protein, Performance Protein + Recovery, Creamy Vanilla, 12 Packs, 1.5 oz (41 g) Each
Vega
2 Billion1234.681.45View on iHerb →
11
Vega, Performance, Protein + Recovery, Creamy Vanilla, 1 lb 13.2 oz (828 g)
Vega, Performance, Protein + Recovery, Creamy Vanilla, 1 lb 13.2 oz (828 g)
Vega
2 Billion1242.991.79View on iHerb →

How we rank Probiotics (Bacillus subtilis DE111)

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.