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Cheapest Whey Protein Isolate (CFM cross flow micro and ultra-filtered) on iHerb

Ranked by real cost per g of Whey Protein Isolate (CFM cross flow micro and ultra-filtered) — cheapest value first.

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

The priciest option here costs about 1.8× more per g of Whey Protein Isolate (CFM cross flow micro and ultra-filtered) than the best-value pick NutraBio. For the same daily dose, choosing by cost per unit instead of sticker price can meaningfully cut your yearly spend.
#ProductDoseServingsPrice (USD)Cost per g
1
NutraBio, Whey Protein Isolate, Raw Unflavored, 5 lb (2,268 g)
NutraBio, Whey Protein Isolate, Raw Unflavored, 5 lb (2,268 g)
NutraBio
29 g79119.990.053View on iHerb →
2
NutraBio, Whey Protein Isolate, Alpine Vanilla, 5 lb (2,268 g)
NutraBio, Whey Protein Isolate, Alpine Vanilla, 5 lb (2,268 g)
NutraBio
29 g76119.990.055View on iHerb →
3
NutraBio, Whey Protein Isolate, Strawberry Ice Cream, 5 lb (2,268 g)
NutraBio, Whey Protein Isolate, Strawberry Ice Cream, 5 lb (2,268 g)
NutraBio
29 g75119.990.056View on iHerb →
4
NutraBio, Whey Protein Isolate, Vanilla Caramel , 5 lb (2,268 g)
NutraBio, Whey Protein Isolate, Vanilla Caramel , 5 lb (2,268 g)
NutraBio
29 g73119.990.057View on iHerb →
5
NutraBio, Whey Protein Isolate, Chocolate Peanut Butter Bliss, 5 lb (2,268 g)
NutraBio, Whey Protein Isolate, Chocolate Peanut Butter Bliss, 5 lb (2,268 g)
NutraBio
29 g72119.990.058View on iHerb →
6
NutraBio, Whey Protein Isolate, Cinnamon Sugar Donut, 2 lb (907 g)
NutraBio, Whey Protein Isolate, Cinnamon Sugar Donut, 2 lb (907 g)
NutraBio
29 g3059.990.070View on iHerb →
7
NutraBio, Whey Protein Isolate, Alpine Vanilla, 2 lb (907 g)
NutraBio, Whey Protein Isolate, Alpine Vanilla, 2 lb (907 g)
NutraBio
29 g3059.990.070View on iHerb →
8
NutraBio, Whey Protein Isolate, Strawberry Ice Cream, 2 lb (907 g)
NutraBio, Whey Protein Isolate, Strawberry Ice Cream, 2 lb (907 g)
NutraBio
29 g3059.990.070View on iHerb →
9
NutraBio, Whey Protein Isolate, Blueberry Muffin, 2 lb (907 g)
NutraBio, Whey Protein Isolate, Blueberry Muffin, 2 lb (907 g)
NutraBio
29 g3059.990.070View on iHerb →
10
NutraBio, Whey Protein Isolate, Dutch Chocolate, 2 lb (907 g)
NutraBio, Whey Protein Isolate, Dutch Chocolate, 2 lb (907 g)
NutraBio
29 g2959.990.072View on iHerb →
11
NutraBio, Whey Protein Isolate, Vanilla Caramel, 2 lb (907 g)
NutraBio, Whey Protein Isolate, Vanilla Caramel, 2 lb (907 g)
NutraBio
29 g2959.990.072View on iHerb →
12
NutraBio, Whey Protein Isolate, Chocolate Dipped Macaroon, 2 lb (907 g)
NutraBio, Whey Protein Isolate, Chocolate Dipped Macaroon, 2 lb (907 g)
NutraBio
29 g2659.990.080View on iHerb →
13
NutraBio, Grass Fed Whey Protein Isolate, Vanilla Bean Ice Cream, 2 lb (907 g)
NutraBio, Grass Fed Whey Protein Isolate, Vanilla Bean Ice Cream, 2 lb (907 g)
NutraBio
29 g2967.990.081View on iHerb →
14
NutraBio, Grass Fed Whey Protein Isolate, Ice Cream Cookie Dream, 2 lb (907 g)
NutraBio, Grass Fed Whey Protein Isolate, Ice Cream Cookie Dream, 2 lb (907 g)
NutraBio
29 g2967.990.081View on iHerb →
15
NutraBio, Grass Fed Whey Protein Isolate, Chocolate Milkshake, 2 lb (907 g)
NutraBio, Grass Fed Whey Protein Isolate, Chocolate Milkshake, 2 lb (907 g)
NutraBio
29 g2867.990.084View on iHerb →
16
Raw Nutrition, Grass Fed Whey Isolate Protein, Peanut Butter, 1.89 lb (857.5 g)
Raw Nutrition, Grass Fed Whey Isolate Protein, Peanut Butter, 1.89 lb (857.5 g)
Raw Nutrition
29 g2564.990.090View on iHerb →
17
Raw Nutrition, Grass Fed Whey Isolate Protein, Cookies and Cream, 1.98 lbs (900 g)
Raw Nutrition, Grass Fed Whey Isolate Protein, Cookies and Cream, 1.98 lbs (900 g)
Raw Nutrition
29 g2564.990.090View on iHerb →
18
Raw Nutrition, Grass Fed Whey Isolate Protein, Dark Chocolate, 1.97 lb (892.5 g)
Raw Nutrition, Grass Fed Whey Isolate Protein, Dark Chocolate, 1.97 lb (892.5 g)
Raw Nutrition
29 g2564.990.090View on iHerb →
19
NutraBio, Performance, Clear Protein, Watermelon Breeze, 1.1 lb (494 g)
NutraBio, Performance, Clear Protein, Watermelon Breeze, 1.1 lb (494 g)
NutraBio
24 g2042.990.091View on iHerb →
20
NutraBio, Clear Protein Powder, Whey Protein Isolate, Fruit Punch, 1.1 lb (511 g)
NutraBio, Clear Protein Powder, Whey Protein Isolate, Fruit Punch, 1.1 lb (511 g)
NutraBio
24 g2042.990.091View on iHerb →
21
NutraBio, Clear Protein Powder, Whey Protein Isolate, Strawberry Lemonade, 1.2 lb (518 g)
NutraBio, Clear Protein Powder, Whey Protein Isolate, Strawberry Lemonade, 1.2 lb (518 g)
NutraBio
24 g2042.990.091View on iHerb →
22
NutraBio, Performance, Clear Protein, Blue Raspberry, 1.1 lb (519 g)
NutraBio, Performance, Clear Protein, Blue Raspberry, 1.1 lb (519 g)
NutraBio
24 g2042.990.091View on iHerb →
23
NutraBio, Performance, Clear Protein, Pineapple Splash, 1.1 lb (499 g)
NutraBio, Performance, Clear Protein, Pineapple Splash, 1.1 lb (499 g)
NutraBio
24 g2042.990.091View on iHerb →
24
NutraBio, Performance, Clear Protein, Mango Mist, 1.1 lb (489 g)
NutraBio, Performance, Clear Protein, Mango Mist, 1.1 lb (489 g)
NutraBio
24 g2042.990.091View on iHerb →
25
Raw Nutrition, Grass Fed Whey Isolate Protein, Vanilla, 1.63 lb (740 g)
Raw Nutrition, Grass Fed Whey Isolate Protein, Vanilla, 1.63 lb (740 g)
Raw Nutrition
28 g2564.990.093View on iHerb →

How we rank Whey Protein Isolate (CFM cross flow micro and ultra-filtered)

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.