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Cheapest Phase 2 Carb Controller on iHerb

Ranked by real cost per 100 mg of Phase 2 Carb Controller — cheapest value first.

Prices updated Jul 25, 2026 · 8 products · Prices in USD

The priciest option here costs about 1,340.3× more per 100 mg of Phase 2 Carb Controller than the best-value pick The Vitamin Shoppe. 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
The Vitamin Shoppe, Phase 2 Carb Controller®, 180 Capsules (500 mg per Capsule)
The Vitamin Shoppe, Phase 2 Carb Controller®, 180 Capsules (500 mg per Capsule)
The Vitamin Shoppe
1,000 mg9038.700.043View on iHerb →
2
The Vitamin Shoppe, Carb Shredder, 90 Tablets
The Vitamin Shoppe, Carb Shredder, 90 Tablets
The Vitamin Shoppe
600 mg4531.990.119View on iHerb →
3
NaturesPlus, Ultra Fat Busters, 60 Bi-Layered Tablets
NaturesPlus, Ultra Fat Busters, 60 Bi-Layered Tablets
NaturesPlus
500 mg3032.680.218View on iHerb →
4
Swanson, White Kidney Bean Extract, 180 Capsules (500 mg per Capsule)
Swanson, White Kidney Bean Extract, 180 Capsules (500 mg per Capsule)
Swanson
1 g9024.2326.92View on iHerb →
5
NOW Foods, Phase 2®, Starch Neutralizer, 500 mg, 120 Veg Capsules
NOW Foods, Phase 2®, Starch Neutralizer, 500 mg, 120 Veg Capsules
NOW Foods
2 g4021.4235.70View on iHerb →
6
Source Naturals, Phase 2® Carbohydrate Blocker, 500 mg, 60 Tablets
Source Naturals, Phase 2® Carbohydrate Blocker, 500 mg, 60 Tablets
Source Naturals
1 g3015.6052.00View on iHerb →
7
Swanson, Diet Duo, 120 Capsules
Swanson, Diet Duo, 120 Capsules
Swanson
1 g6032.7954.65View on iHerb →
8
Swanson, Diet Duo, 60 Capsules
Swanson, Diet Duo, 60 Capsules
Swanson
1 g3017.2957.63View on iHerb →

How we rank Phase 2 Carb Controller

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.