Best Soy Free Whey Protein Isolate in 2026
Daisy
Last Updated: Jul 17, 2026
Daisy
Last Updated: Jul 17, 2026
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| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| NutraBio Labs | 9.92 | ✅ | ✅ | ✅ |
HIGH QUALITY INGREDIENTS - NutraBio uses only the best, and our Isolate is no exception. We use high grade, cold processed, ultra-filtered WPI 90; the purest isolate available. Our protein is also non-GMO, soy free, low carb, low calorie, low cholesterol, kosher dairy, contains no fat, no additives, and no added sugar.
IDEAL FOR WEIGHT LOSS - Our whey isolate is low in carbs and contains no fat, making it ideal for anyone on a diet and also keto-friendly. Our pure whey isolate can help any gym-goer build lean muscle mass.
FREE OF FILLERS – You won’t find any fillers or fluff in our protein powder! Our Isolate contains zero dextrose, maltodextrin, dairy creamer, or other junk. It’s also suitable for lactose sensitive individuals.
VITAL NUTRIENTS – NutraBio 100% Whey Isolate has the perfect amino acid profile to optimize your recovery, with 5.3 grams of BCAAs and over 11 grams of essential amino acids per serving.
FULL LABEL DISCLOSURE AND TRANSPARENCY – All NutraBio products feature fully transparent labels with no proprietary blends. Every batch of every product is tested by independent third party labs to ensure potency.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| My Nutrition Depot™ | 8.16 | ✅ | ✅ | ✅ |
100% WHEY ISOLATE PROTEIN POWDER- NutraBio Grass Fed Whey Isolate contains 100% Whey Protein Isolate only! There is no whey concentrate or other proteins, maltodextrin, dextrose, creamer or any other filler in this product.
PROTEIN EFFICIENCY - You've just chosen the world's leading muscle building protein designed specifically for individuals needing the highest quality protein. This protein has a Biological Value of 159, Protein Digestibility of 95, Protein Efficiency Ratio of 3.6, Net Protein Utilization of 92, and a perfect 1.0 PDCAAS.
LOW CARB - Our factory fresh whey protein isolate (WPI) contains 25 grams of pure protein per serving and has zero sugars, is fat free, and cholesterol free with just 1 gram of carbs making it the perfect choice for keto diets or athletes who want to get ripped and pack on lean muscle.
NATURALLY FLAVORED AND SWEETENED – We use only all natural stevia leaf extract and monk fruit extract to sweeten our Grass Fed Isolate. We also use sunflower lecithin to ensure this product is soy free.
KOSHER – Our Grass Fed Protein is certified Kosher Dairy by the Orthodox Union.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| NutraBio Labs | 9.93 | ✅ | ✅ | ✅ |
HIGH QUALITY INGREDIENTS - NutraBio uses only the best, and our Isolate is no exception. We use high grade, cold processed, ultra-filtered WPI 90; the purest isolate available. Our protein is also non-GMO, soy free, low carb, low calorie, low cholesterol, kosher dairy, contains no fat, no additives, and no added sugar.
IDEAL FOR WEIGHT LOSS - Our whey isolate is low in carbs and contains no fat, making it ideal for anyone on a diet and also keto-friendly. Our pure whey isolate can help any gym-goer build lean muscle mass.
FREE OF FILLERS – You won’t find any fillers or fluff in our protein powder! Our Isolate contains zero dextrose, maltodextrin, dairy creamer, or other junk. It’s also suitable for lactose sensitive individuals.
VITAL NUTRIENTS – NutraBio 100% Whey Isolate has the perfect amino acid profile to optimize your recovery, with 5.3 grams of BCAAs and over 11 grams of essential amino acids per serving.
FULL LABEL DISCLOSURE AND TRANSPARENCY – All NutraBio products feature fully transparent labels with no proprietary blends. Every batch of every product is tested by independent third party labs to ensure potency.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| NutraBio Labs | 9.92 | ✅ | ✅ | ✅ |
HIGH QUALITY INGREDIENTS - NutraBio uses only the best, and our Isolate is no exception. We use high grade, cold processed, ultra-filtered WPI 90; the purest isolate available. Our protein is also non-GMO, soy free, low carb, low calorie, low cholesterol, kosher dairy, contains no fat, no additives, and no added sugar.
IDEAL FOR WEIGHT LOSS - Our whey isolate is low in carbs and contains no fat, making it ideal for anyone on a diet and also keto-friendly. Our pure whey isolate can help any gym-goer build lean muscle mass.
FREE OF FILLERS – You won’t find any fillers or fluff in our protein powder! Our Isolate contains zero dextrose, maltodextrin, dairy creamer, or other junk. It’s also suitable for lactose sensitive individuals.
VITAL NUTRIENTS – NutraBio 100% Whey Isolate has the perfect amino acid profile to optimize your recovery, with 5.3 grams of BCAAs and over 11 grams of essential amino acids per serving.
FULL LABEL DISCLOSURE AND TRANSPARENCY – All NutraBio products feature fully transparent labels with no proprietary blends. Every batch of every product is tested by independent third party labs to ensure potency.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| NutraBio Labs | 9.92 | ✅ | ✅ | ✅ |
HIGH QUALITY INGREDIENTS - NutraBio uses only the best, and our Isolate is no exception. We use high grade, cold processed, ultra-filtered WPI 90; the purest isolate available. Our protein is also non-GMO, soy free, low carb, low calorie, low cholesterol, kosher dairy, contains no fat, no additives, and no added sugar.
IDEAL FOR WEIGHT LOSS - Our whey isolate is low in carbs and contains no fat, making it ideal for anyone on a diet and also keto-friendly. Our pure whey isolate can help any gym-goer build lean muscle mass.
FREE OF FILLERS – You won’t find any fillers or fluff in our protein powder! Our Isolate contains zero dextrose, maltodextrin, dairy creamer, or other junk. It’s also suitable for lactose sensitive individuals.
VITAL NUTRIENTS – NutraBio 100% Whey Isolate has the perfect amino acid profile to optimize your recovery, with 5.3 grams of BCAAs and over 11 grams of essential amino acids per serving.
FULL LABEL DISCLOSURE AND TRANSPARENCY – All NutraBio products feature fully transparent labels with no proprietary blends. Every batch of every product is tested by independent third party labs to ensure potency.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| NutraBio Labs | 9.93 | ✅ | ✅ | ✅ |
HIGH QUALITY INGREDIENTS - NutraBio uses only the best, and our Isolate is no exception. We use high grade, cold processed, ultra-filtered WPI 90; the purest isolate available. Our protein is also non-GMO, soy free, low carb, low calorie, low cholesterol, kosher dairy, contains no fat, no additives, and no added sugar.
IDEAL FOR WEIGHT LOSS - Our whey isolate is low in carbs and contains no fat, making it ideal for anyone on a diet and also keto-friendly. Our pure whey isolate can help any gym-goer build lean muscle mass.
FREE OF FILLERS – You won’t find any fillers or fluff in our protein powder! Our Isolate contains zero dextrose, maltodextrin, dairy creamer, or other junk. It’s also suitable for lactose sensitive individuals.
VITAL NUTRIENTS – NutraBio 100% Whey Isolate has the perfect amino acid profile to optimize your recovery, with 5.3 grams of BCAAs and over 11 grams of essential amino acids.
FULL LABEL DISCLOSURE AND TRANSPARENCY – All NutraBio products feature fully transparent labels with no proprietary blends. Every batch of every product is tested by independent third party labs to ensure potency.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| NutraBio Labs | 9.92 | ✅ | ✅ | ✅ |
RAPID RECOVERY AND LEAN MUSCLE GROWTH – Feed your muscles with fast digesting WPI-90. At 20g of protein per serving, 0g of sugar, 1g of carbs, and only 90 calories, you can be sure you are giving your body only what it needs and nothing else.
IDEAL FOR WEIGHT LOSS - Our Clear Whey Isolate is low in carbs and contains no fat, making it ideal for anyone on a diet and also keto-friendly. Use Clear Isolate with or between meals, or after exercise for a healthy source of calories.
REFRESHING – NutraBio’s Clear Whey Protein Isolate has no milky texture or excessive foaming like other brands. Our Clear Isolate provides an entirely new whey protein experience, with delicious hydrating flavors like Pineapple, Mango, and Watermelon.
SUPERIOR QUALITY - NutraBio uses only the best, and this product is no exception. Our Clear Isolate is non-GMO, fat free, sugar free, gluten free, soy free, vegetarian, third-party tested, and made in the USA.
THIRD PARTY TESTED, FULL DISCLOSURE – Like all NutraBio products, our Clear Isolate is tested by an independent third party lab to ensure it is both pure and meets our strict quality standards. All NutraBio products feature fully transparent labels with no proprietary blends.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| NutraBio Labs | 9.92 | ✅ | ✅ | ✅ |
RAPID RECOVERY AND LEAN MUSCLE GROWTH – Feed your muscles with fast digesting WPI-90. At 20g of protein per serving, 0g of sugar, 1g of carbs, and only 90 calories, you can be sure you are giving your body only what it needs and nothing else.
IDEAL FOR WEIGHT LOSS - Our Clear Whey Isolate is low in carbs and contains no fat, making it ideal for anyone on a diet and also keto-friendly. Use Clear Isolate with or between meals, or after exercise for a healthy source of calories.
REFRESHING – NutraBio’s Clear Whey Protein Isolate has no milky texture or excessive foaming like other brands. Our Clear Isolate provides an entirely new whey protein experience, with delicious hydrating flavors like Pineapple, Mango, and Watermelon.
SUPERIOR QUALITY - NutraBio uses only the best, and this product is no exception. Our Clear Isolate is non-GMO, fat free, sugar free, gluten free, soy free, vegetarian, third-party tested, and made in the USA.
THIRD PARTY TESTED, FULL DISCLOSURE – Like all NutraBio products, our Clear Isolate is tested by an independent third party lab to ensure it is both pure and meets our strict quality standards. All NutraBio products feature fully transparent labels with no proprietary blends.
Here is the list of top-rated brands that were evaluated by PM.
| Brand | Count |
|---|---|
| Nutrabio | 8 |
We've carried out a comprehensive analysis of 16,011 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 $62.24, with top brands including and
Our team of expert editors reviewed these high-quality items and handpicked the top 8 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.
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