Protein type

Whey isolate protein powders

Q: Is whey isolate lactose-free?

Not necessarily. It often contains less lactose than concentrate, but the exact amount and labeling vary.

Q: What is hydrolyzed whey isolate?

It is whey isolate that has undergone additional processing to break some proteins into smaller components. The finished label still determines the comparable nutrition values.

Q: How should isolate value be compared?

Use verified total protein and cost per 25g, then consider ingredients, package size and your dietary requirements.

Whey isolate products are commonly chosen for higher protein concentration, but finished formulas differ. Compare the exact serving, ingredients and price instead of relying on the category name alone.

50 matching productsReviewed October 12, 2026

Selection method

How this shortlist is built

Includes whey isolate and hydrolyzed whey isolate listings.
Verified metrics come from the exact package label.
Milk allergen and lactose-related decisions require current manufacturer information.

Read the complete comparison methodology

Comparable products

50 products match

US listing base · reference conversion

Product	Protein	Density	Calories	Sugar	25g cost	Details
AnimalIsolate Loaded Whey Protein Powder, Chocolate, 4 lb	25g	74%	125 kcal	1g	$1.38	View
Biochem100% Whey Protein Isolate Powder, Natural, 1.5 lbs	Label check	—	—	—	—	View
Biochem100% Whey Protein Isolate Powder, Natural, 12.3 oz	Label check	—	—	—	—	View
California Gold NutritionSport Whey Isolate with Organic Cane Sugar, Very Vanilla, 2 lb	Label check	—	—	—	—	View
California Gold NutritionSport Whey Protein Isolate, Dark Chocolate, 2 lb	27g	68%	150 kcal	6g	$2.21	View
California Gold NutritionSport Whey Protein Isolate, Dark Chocolate, 5 lb	27g	68%	150 kcal	6g	$1.71	View
California Gold NutritionSport Whey Protein Isolate, Unflavored, 1 lb	27g	87%	120 kcal	0g	$1.90	View
California Gold NutritionSport Whey Protein Isolate, Unflavored, 5 lb	27g	87%	120 kcal	0g	$1.33	View
California Gold NutritionWhey Protein Isolate, Very Vanilla, 5 lb	27g	71%	140 kcal	6g	$1.62	View
DymatizeISO100 Hydrolyzed Whey Isolate, Chocolate Peanut Butter, 1.43 lb	25g	78%	120 kcal	1g	$2.23	View
DymatizeISO100 Hydrolyzed Whey Isolate, Dunkin Glazed Donut, 1.34 lb	25g	83%	120 kcal	1g	$2.38	View
DymatizeISO100 Hydrolyzed Whey Isolate, Gourmet Chocolate, 1.43 lb	25g	78%	120 kcal	<1 g	$2.23	View
DymatizeISO100 Hydrolyzed Whey Isolate, Gourmet Vanilla, 1.34 lb	25g	83%	110 kcal	1g	—	View
DymatizeISO100 Hydrolyzed Whey Isolate, Pebbles Birthday Cake, 1.34 lb	25g	83%	120 kcal	1g	$2.38	View
EVLution Nutrition100% Isolate Protein, Double Rich Chocolate, 1 lb	25g	80%	100 kcal	0g	$2.47	View
EVLution Nutrition100% Isolate Protein, Double Rich Chocolate, 5 lb	25g	78%	120 kcal	1g	$1.94	View
EVLution Nutrition100% Isolate Protein, Unflavored, 1 lb	25g	88%	100 kcal	0g	$2.16	View
EVLution Nutrition100% Isolate Protein, Vanilla Ice Cream, 5 lb	25g	83%	110 kcal	1g	$1.81	View
IsopureLow Carb Protein Powder, Dutch Chocolate, 1.04 lb	25g	74%	110 kcal	0g	$2.44	View
IsopureZero Carb Protein Drink Mix, Creamy Vanilla, 1.06 lb	25g	78%	110 kcal	0g	$2.27	View
IsopureZero Carb Protein Powder, Strawberries & Cream, 1.06 lb	25g	78%	110 kcal	0g	$2.21	View
IsopureZero Carb Protein Powder, Unflavored, 1 lb	25g	86%	100 kcal	0g	$2.13	View
IsopureZero Carb Protein Powder, Unflavored, 2.55 lb	25g	86%	100 kcal	0g	$2.27	View
MomentousWhey Protein Isolate, Vanilla, 1.38 lb (625 g) (Discontinued Item)	Label check	—	—	—	—	View
NOW FoodsSports Whey Protein Isolate, Creamy Vanilla, 1.8 lbs	25g	78%	120 kcal	0g	$1.82	View
NOW FoodsSports Whey Protein Isolate, Unflavored, 1.2 lb	25g	89%	110 kcal	0g	$1.91	View
NOW FoodsSports Whey Protein Isolate, Unflavored, 5 lbs	24g	86%	110 kcal	0g	$1.29	View
NutraBioWhey Protein Isolate, Creamy Vanilla, 5 lb	25g	84%	120 kcal	0g	$1.60	View
NutraBioWhey Protein Isolate, Strawberry Ice Cream, 5 lb	25g	83%	120 kcal	0g	$1.60	View
NutraBioWhey Protein Isolate, Vanilla Caramel, 2 lb	25g	82%	120 kcal	0g	$2.07	View
Nutrex ResearchIsoFit, Chocolate Shake, 5.1 lbs	25g	76%	120 kcal	1g	$1.57	View
NutricostGrass-Fed Whey Protein Isolate, Unflavored, 2 lb	30g	86%	130 kcal	1g	$1.92	View
NutricostGrass-Fed Whey Protein Isolate, Unflavored, 5 lb	30g	86%	130 kcal	1g	$1.63	View
NutricostGrass-Fed Whey Protein Isolate, Vanilla, 5 lb	30g	77%	140 kcal	3g	$1.82	View
NutricostWhey Protein Isolate, Chocolate PB, 5 lb	30g	77%	150 kcal	1g	$1.80	View
NutricostWhey Protein Isolate, Cookies N Cream, 5 lb	30g	73%	160 kcal	2g	$1.89	View
NutricostWhey Protein Isolate, Mocha, 5 lb	30g	79%	140 kcal	1g	$1.74	View
NutricostWhey Protein Isolate, Salted Caramel, 2 lb	30g	83%	140 kcal	1g	$2.00	View
NutricostWhey Protein Isolate, Salted Caramel, 5 lb	30g	83%	140 kcal	1g	$1.68	View
NutricostWhey Protein Isolate, Unflavored, 2 lb	30g	86%	130 kcal	1g	$1.92	View
NutricostWhey Protein Isolate, Unflavored, 5 lb	30g	86%	130 kcal	1g	$1.60	View
NutricostWhey Protein Isolate, Vanilla, 5 lb	30g	81%	140 kcal	not significant	$1.68	View
Optimum NutritionGold Standard 100% Isolate, Chocolate Bliss, 3 lb	25g	81%	110 kcal	not significant	$2.05	View
Optimum NutritionPlatinum Hydro Whey, Turbo Chocolate, 3.61 lb	30g	73%	140 kcal	1g	$2.50	View
Optimum NutritionPlatinum Hydro Whey, Velocity Vanilla, 3.52 lb	30g	75%	140 kcal	1g	$2.50	View
Raw NutritionEssentials Grass Fed Whey Isolate, Dark Chocolate, 2 lb	Label check	—	—	—	—	View
ThorneWhey Protein Isolate, Chocolate, 1.99 lb	Label check	—	—	—	—	View
ThorneWhey Protein Isolate, Chocolate, 14 Packets	Label check	—	—	—	—	View
ThorneWhey Protein Isolate, Vanilla, 1.84 lb	Label check	—	—	—	—	View
WellahProtein Your Whey, Whey Isolate, Vanilla, 1.8 lb	20g	74%	100 kcal	2g	$2.08	View

Data note: A dash means the exact package label still needs verification or the input required for that calculation is unavailable. Prices are reference conversions from observed iHerb US listing prices, not live local quotes.

Clear answers

Frequently asked questions

Is whey isolate lactose-free?

Not necessarily. It often contains less lactose than concentrate, but the exact amount and labeling vary.

What is hydrolyzed whey isolate?

It is whey isolate that has undergone additional processing to break some proteins into smaller components. The finished label still determines the comparable nutrition values.

How should isolate value be compared?

Use verified total protein and cost per 25g, then consider ingredients, package size and your dietary requirements.