Best Soy Free Whey Protein Isolate in 2026

Daisy
Last Updated: Jul 17, 2026

At a Glance: Our Top Picks for Soy Free Whey Protein Isolate

BSN SYNTHA-6 Whey Protein Powder, Chocolate Protein Powder with Micellar Casein, Milk Protein Isolate, Chocolate Milkshake, 48 Servings (Packaging May Vary)
#TOP1
Bsn Syntha-6 Whey Protein Powder, Chocolate Protein Powder
9.9
PM SCORE
BSN SYNTHA-6 Whey Protein Powder, Chocolate Protein Powder with Micellar Casein, Milk Protein Isolate, Chocolate Milkshake, 28 Servings (Packaging May Vary)
#TOP2
Bsn Syntha-6 Whey Protein Powder, Chocolate Protein Powder
9.9
PM SCORE
BSN SYNTHA-6 Edge Protein Powder, with Hydrolyzed Whey, Micellar Casein, Milk Protein Isolate, Low Sugar, 24g Protein, Cookies N Cream, 28 Servings
#TOP3
Bsn Syntha-6 Edge Protein Powder, With Hydrolyzed Whey,
9.8
PM SCORE

* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.

Summary of the Best Soy Free Whey Protein Isolate of 2026

Market Overview
Soy Free Whey Protein Isolate Reviewed
  • Reviews Analyzed: 128112 Items
  • PM Avg. Rating: 9.8 / 10
15 Products Evaluated
  • Highest Price: $74.99
  • Lowest Price: $39.99
  • Avg. Price: $55.47

Bsn Syntha-6 Whey Protein Powder, Chocolate Protein Powder With Micellar Casein, Milk Protein Isolate, Chocolate Milkshake, 48 Servings (Packaging May Vary)

BSN
4500
7.75 X 7.75 X 11.00 Inches
3.36 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Ridiculously delicious : BSN broke through the whey protein flavor barrier once and for all with the introduction of syntha-6

22 gram protein matrix : Consisting of whey protein concentrate, whey protein isolate, calcium caseinate, micellar casein, milk protein isolate, and egg albumin

2-3 gram sugar : While the taste is mind blowing, syntha-6 contains 2-3 gram of sugar per serving depending on flavor

Use any time of day : Post workout, between meals, as a snack, or as a treat, it doesn’t matter. BSN syntha-6 was formulated to be your any time of day protein powder

Protein supplementation : Promotes muscle protein synthesis and recovery support

Bsn Syntha-6 Whey Protein Powder, Chocolate Protein Powder With Micellar Casein, Milk Protein Isolate, Chocolate Milkshake, 28 Servings (Packaging May Vary)

BSN
1040243
5.75 X 5.75 X 10.00 Inches
2.91 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

BSN SYNTHA-6 IS RIDICULOUSLY DELICIOUS: We broke through the taste barrier once and for all. Choose from a wide range of protein powder flavors that deliver an unbeatable milkshake-like experience.

BSN PROTEIN MATRIX: 22g of premium protein from whey protein concentrate, whey protein isolate, calcium caseinate, micellar casein, milk protein isolate, and egg albumin

10g OF ESSENTIAL AMINO ACIDS: Additional support for your nutrition and fitness goals

ANYTIME PROTEIN: Mix up your protein drink and enjoy post workout, between meals, as a snack, or as a treat

HIGH-QUALITY PROTEIN POWDER: Helps you reap the benefits of every training session by meeting your protein needs for muscle building and maintenance

SERVING SIZE: 47g (1 SCOOP): 190-200 calories and just 2-3g of sugar per serving depending on flavor

Bsn Syntha-6 Edge Protein Powder, With Hydrolyzed Whey, Micellar Casein, Milk Protein Isolate, Low Sugar, 24G Protein, Cookies N Cream, 28 Servings

BSN
387659
6.00 X 6.00 X 10.00 Inches
0.06 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

GIVE YOURSELF AN EDGE – Give your recovery the performance edge to help you achieve your health and fitness goals

CREAMY & RICH TEXTURE – The texture of a real milkshake without the excess carbs and fat you would associate with a powder this delicious

24 GRAMS PROTEIN-MATRIX – Consisting of whey protein concentrate, whey protein isolate, hydrolyzed whey protein, calcium caseinate, micellar casein, milk protein concentrate to give your muscles the protein they need to support recovery

12 GRAMS NATURALLY OCCURRING BCAAs and EAAs – Helps support muscle recovery following intense bouts of exercise

USE ANY TIME OF DAY – Post-workout, between meals, as a snack, or as a treat, it doesn’t matter – BSN Syntha-6 Edge was formulated to be your any time of day protein powder

BANNED SUBSTANCE TESTED – Highest quality control measures so you feel comfortable and safe consuming the product

Bsn Syntha-6 Edge Protein Powder, Vanilla Protein Powder With Hydrolyzed Whey, Micellar Casein, Milk Protein Isolate, Low Sugar, 24G Protein, Vanilla Milkshake, 28 Servings

BSN
2063899
6.00 X 6.00 X 10.00 Inches
0.06 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

GIVE YOURSELF AN EDGE – Give your recovery the performance edge to help you achieve your health and fitness goals

CREAMY & RICH TEXTURE – The texture of a real milkshake without the excess carbs and fat you would associate with a powder this delicious

15 GRAMS NATURALLY OCCURRING BCAAs and EAAs – Helps support muscle recovery following intense bouts of exercise

USE ANY TIME OF DAY – Post-workout, between meals, as a snack, or as a treat, it doesn’t matter – BSN Syntha-6 Edge was formulated to be your any time of day protein powder

BANNED SUBSTANCE TESTED – Highest quality control measures so you feel comfortable and safe consuming the product

Bsn Syntha-6 Whey Protein Powder With Micellar Casein, Milk Protein Isolate Powder, Vanilla Ice Cream, 48 Servings (Packaging May Vary)

BSN
4502
7.75 X 7.75 X 11.00 Inches
5.00 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Ridiculously delicious : BSN broke through the whey protein flavor barrier once and for all with the introduction of syntha-6

22 gram protein matrix : Consisting of whey protein concentrate, whey protein isolate, calcium caseinate, micellar casein, milk protein isolate, and egg albumin

2-3 gram sugar : While the taste is mind blowing, syntha-6 contains 2-3 gram of sugar per serving depending on flavor

Use any time of day : Post workout, between meals, as a snack, or as a treat, it doesn’t matter. BSN syntha-6 was formulated to be your any time of day protein powder

Protein supplementation : Promotes muscle protein synthesis and recovery support

Bsn Syntha-6 Edge Protein Powder, Strawberry Protein Powder With Hydrolyzed Whey, Micellar Casein, Milk Protein Isolate, Low Sugar, 24G Protein, Strawberry Milkshake, 28 Servings

BSN
2063923
6.00 X 6.00 X 10.00 Inches
0.17 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

GIVE YOURSELF AN EDGE – Give your recovery the performance edge to help you achieve your health and fitness goals

CREAMY & RICH TEXTURE – The texture of a real milkshake without the excess carbs and fat you would associate with a powder this delicious

24 GRAMS PROTEIN-MATRIX – Consisting of whey protein concentrate, whey protein isolate, hydrolyzed whey protein, calcium caseinate, micellar casein, milk protein concentrate to give your muscles the protein they need to support recovery

14 GRAMS NATURALLY OCCURRING BCAAs and EAAs – Helps support muscle recovery following intense bouts of exercise

USE ANY TIME OF DAY – Post-workout, between meals, as a snack, or as a treat, it doesn’t matter – BSN Syntha-6 Edge was formulated to be your any time of day protein powder

BANNED SUBSTANCE TESTED – Highest quality control measures so you feel comfortable and safe consuming the product

Bsn Syntha-6 Edge Protein Powder, With Hydrolyzed Whey, Micellar Casein, Milk Protein Isolate, Low Sugar, 24G Protein, Strawberry Milkshake, 48 Servings

BSN
2063931
8.00 X 8.00 X 11.30 Inches
4.80 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Product Type:Health_Personal_Care

Item Package Dimension:8.0 " L X8.0 " W X 11.3 " H

Item Package Weight:4.6 lbs

Country Of Origin: United States

Use Any Time Of Day – Post-Workout, Between Meals, As A Snack, Or As A Treat, It Doesn’T Matter – Bsn Syntha-6 Edge Was Formulated To Be Your Any Time Of Day Protein Powder

Allergen Information: Soy

Bsn Syntha-6 Edge Protein Powder, Chocolate Protein Powder With Hydrolyzed Whey, Micellar Casein, Milk Protein Isolate, Low Sugar, 24G Protein, Chocolate Milkshake, 48 Servings

BSN
834266005697
7.75 X 7.75 X 11.00 Inches
4.80 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

GIVE YOURSELF AN EDGE – Give your recovery the performance edge to help you achieve your health and fitness goals

CREAMY & RICH TEXTURE – The texture of a real milkshake without the excess carbs and fat you would associate with a powder this delicious

24 GRAMS PROTEIN-MATRIX – Consisting of whey protein concentrate, whey protein isolate, hydrolyzed whey protein, calcium caseinate, micellar casein, milk protein concentrate to give your muscles the protein they need to support recovery

11 GRAMS NATURALLY OCCURRING BCAAs and EAAs – Helps support muscle recovery following intense bouts of exercise

USE ANY TIME OF DAY – Post-workout, between meals, as a snack, or as a treat, it doesn’t matter – BSN Syntha-6 Edge was formulated to be your any time of day protein powder

BANNED SUBSTANCE TESTED – Highest quality control measures so you feel comfortable and safe consuming the product

Bsn Syntha-6 Edge Protein Powder, Vanilla Protein Powder With Hydrolyzed Whey, Micellar Casein, Milk Protein Isolate, Low Sugar, 24G Protein, Vanilla Milkshake, 48 Servings

BSN
834266005703
8.00 X 8.00 X 11.30 Inches
4.80 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Product Type:Health_Personal_Care

Item Package Dimension:8.0 " L X8.0 " W X 11.3 " H

Item Package Weight:4.7 lbs

Country Of Origin: United States

Use Any Time Of Day – Post-Workout, Between Meals, As A Snack, Or As A Treat, It Doesn’T Matter – Bsn Syntha-6 Edge Was Formulated To Be Your Any Time Of Day Protein Powder

This Lean, Protein Packed Shake Delivers A Milkshake-Like Experience That Will Have You Convinced It’S Your Cheat Day

Bsn Syntha-6 Whey Protein Powder, Cold Stone Creamery- Birthday Cake Remix Flavor, Micellar Casein, Milk Protein Isolate Powder, 25 Servings

BSN
1084310
5.97 X 5.97 X 10.00 Inches
2.58 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

BSN SYNTHA-6 IS RIDICULOUSLY DELICIOUS: We broke through the taste barrier once and for all. Choose from a wide range of protein powder flavors that deliver an unbeatable milkshake-like experience.

BSN PROTEIN MATRIX: 22g of premium protein from whey protein concentrate, whey protein isolate, calcium caseinate, micellar casein, milk protein isolate, and egg albumin

10g OF ESSENTIAL AMINO ACIDS: Additional support for your nutrition and fitness goals

ANYTIME PROTEIN: Mix up your protein drink and enjoy post workout, between meals, as a snack, or as a treat

HIGH-QUALITY PROTEIN POWDER: Helps you reap the benefits of every training session by meeting your protein needs for muscle building and maintenance

SERVING SIZE: 47g (1 SCOOP): 190-200 calories and just 2-3g of sugar per serving depending on flavor

#TOP11
Best For Bsn

Bsn Syntha-6 Isolate Protein Powder, Peanut Butter Protein Powder With Whey Protein Isolate, Milk Protein Isolate, Flavor: Chocolate Peanut Butter, 48 Servings

BSN
834266002719
8.00 X 8.00 X 11.00 Inches
4.01 pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Isolate Protein Matrix: a matrix of fast and slow release proteins from whey protein isolate and milk protein isolate sources

11 grams Eaas Per Serving: help refuel and build quality muscle mass

Great Tasting: The delicious milkshake like flavors you’ve been accustomed to drinking from BSN

Milkshake Consistency: amazing texture and consistency

Any Time Formula: great for in the morning, pre workout, post workout, between meals, or anytime where you need more protein in your diet

#TOP12

Bsn Syntha-6 Isolate Protein Powder, Peanut Butter Protein Powder With Whey Protein Isolate, Milk Protein Isolate, Flavor: Peanut Butter Cookie, 48 Servings

BSN
230593
8.00 X 8.00 X 11.00 Inches
4.01 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

ISOLAST ISOLATE PROTEIN MATRIX –a matrix of fast and slow release proteins from whey protein isolate and milk protein isolate sources

11G EAAs PER SERVING – help refuel and build quality muscle mass

GREAT-TASTING – the delicious milkshake-like flavors you’ve been accustomed to drinking from BSN

MILKSHAKE CONSISTENCY – amazing texture and consistency

ANY-TIME FORMULA – great for in the morning, pre-workout, post-workout, between meals, or anytime where you need more protein in your diet

Bsn Syntha-6 Isolate Protein Powder, Chocolate Protein Powder With Whey Protein Isolate, Milk Protein Isolate, Flavor: Chocolate Milkshake, 48 Servings (Packaging May Vary)

BSN
BN13X
7.75 X 7.75 X 11.00 Inches
4.00 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

ISOLAST ISOLATE PROTEIN MATRIX –a matrix of fast and slow release proteins from whey protein isolate and milk protein isolate sources

11G EAAs PER SERVING – help refuel and build quality muscle mass

GREAT-TASTING – the delicious milkshake-like flavors you’ve been accustomed to drinking from BSN

MILKSHAKE CONSISTENCY – amazing texture and consistency

ANY-TIME FORMULA – great for in the morning, pre-workout, post-workout, between meals, or anytime where you need more protein in your diet

During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when provided.

Bsn Berry Berry Berry Good Flavor, Powder, 25 Servings

BSN
1092360
5.97 X 5.97 X 10.00 inches
2.58 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
HOT DEALS ONLY!!! 9.80

Features

BSN SYNTHA-6 IS RIDICULOUSLY DELICIOUS: We broke through the taste barrier once and for all. Choose from a wide range of protein powder flavors that deliver an unbeatable milkshake-like experience.

BSN PROTEIN MATRIX: 22g of premium protein from whey protein concentrate, whey protein isolate, calcium caseinate, micellar casein, milk protein isolate, and egg albumin

10g OF ESSENTIAL AMINO ACIDS: Additional support for your nutrition and fitness goals

ANYTIME PROTEIN: Mix up your protein drink and enjoy post workout, between meals, as a snack, or as a treat

HIGH-QUALITY PROTEIN POWDER: Helps you reap the benefits of every training session by meeting your protein needs for muscle building and maintenance

SERVING SIZE: 47g (1 SCOOP): 190-200 calories and just 2-3g of sugar per serving depending on flavor

Bsn Isoburn, Lean Whey Protein Powder, Fat Burner For Weight Loss With L-Carnitine - Chocolate Milkshake, (20 Servings), 1.32 Pound (Pack Of 1)

BSN
1989326
5.20 X 5.20 X 8.49 Inches
1.75 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

FAT-BURNING PROTEIN POWDER MATRIX – 2-in-1 support to provide you with the best of both worlds for helping attain lean muscle mass gains

20G WHEY PROTEIN ISOLATE – supplies your muscles with the highest quality protein to help maintain and build lean muscle mass while supporting your physique goals*

250MG L-CARNITINE – helps support fat burning*

300MG LEPTICORE; 300MG GREEN COFFEE EXTRACT

NON-CAFFEINATED FORMULA – great for any time of day use

120 CALORIES PER SERVING – provides your body with the best ingredients while keeping to 120 calories per serving to support your weight management goals*

≤6G CARBS, ≤2G SUGAR, AND 2G FAT PER SERVING

20 SERVINGS PER CONTAINER

3 DELICIOUS FLAVORS – vanilla, chocolate, strawberry

During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when provided.

Top 10 whey protein isolate Brands on Amazon

Here is the list of top-rated brands that were evaluated by PM.

Brand Count
Bsn 15

Top 10 whey protein isolate Brands Pie Chart


We've carried out a comprehensive analysis of 128,112 reviews on whey protein isolate, using our selection criteria to identify the best options in the categories. Our findings reveal that most customers typically select whey protein isolate priced around $55.47, with top brands including and

Our team of expert editors reviewed these high-quality items and handpicked the top 15 whey protein isolate for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the categories category. These include and .

We are dedicated to assisting our users in finding the right powders Products based on their needs, saving them considerable time when choosing which whey protein isolate to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.