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Customer reviews for ISOPURE Whey Protein Isolate, Unflavored, 1.55 lbs. for
ISOPURE Whey Protein Isolate, Unflavored, 1.55 lbs.
4.3 out of 5 stars
stars
126 ratings122 reviews
  1. 5 stars57% (72)
  2. 4 stars27% (34)
  3. 3 stars10% (12)
  4. 2 stars1% (1)
  5. 1 star6% (7)

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Showing 21-30 of 122 reviews
Jun 7, 2026
Reviewer name: Valerie
5 out of 5 stars
5 out of 5 stars review

Taste good and mixes well and nicely priced.

Helpful?70GIW7NABGMB16150765564
Nov 21, 2025
Reviewer name: LAURA
1 out of 5 stars
1 out of 5 stars review

Absolutely horrendous. It smelled and tasted rotten. I couldn't even choke down a shake with half a serving in it.

Helpful?70GIW7NABGMB16150765564
Jul 10, 2025
Reviewer name: emanuelv1_9501
4 out of 5 stars
4 out of 5 stars review

Nutritional Profile

[This review was collected as part of a promotion.] One of the standout features of Isopure’s Zero Carb protein is its impressive nutritional profile. With zero carbs and zero sugars, it's an excellent option for anyone following a low-carb or ketogenic diet. Each serving typically contains 25 grams of protein, providing a substantial boost to my daily intake. The inclusion of vitamins and minerals is a brilliant touch, aiding in overall health without unnecessary fillers. This makes it not just a protein supplement but a holistic addition to my diet.

Review from Glanbia Performance Nutrition, Inc.
Helpful?70GIW7NABGMB16150765564
Aug 24, 2025
Reviewer name: productgirlie_804
5 out of 5 stars
5 out of 5 stars review

Zero Carb Protein Win!

[This review was collected as part of a promotion.] So I am a workout person who happens to consume a lot of protein to meet my needs. I find most protein powders are very sweet and don’t taste too good to me. I’ve purchased from this brand before and I really love their protein powders. The unflavored one was phenomenal as I am able to add it to other foods or drinks. I did notice that some bits of it doesn’t fully dissolve in water and taste like salt which gives me the ick. Otherwise, this works perfect and gives me a bunch of protein for minimal calories! The container is gorgeous with the almost see through white color. I forgot to mention this is ZERO CARB! That’s a plus for me as someone who is mindful of the carbs I intake on a daily basis. I will definitely purchase this as it does fit my need and is a solid product!!

Review from Glanbia Performance Nutrition, Inc.
Helpful?70GIW7NABGMB16150765564
Jul 24, 2025
Reviewer name: natalief120_5544
5 out of 5 stars
5 out of 5 stars review

Zero Carb Protein

[This review was collected as part of a promotion.] This protein powder is perfect for all the smoothies I make. I love to add seasonal fruits and berries, some crushed ice and a scoop of protein powder. The perfect balanced snack or meal. This unflavored protein powder pack 25g og protein, 5g BCAAs, has zero sugar and zero carbs. It mixed well into any liquid, it is even delicious in oatmeal, pancakes or muffins

Review from Glanbia Performance Nutrition, Inc.
Helpful?70GIW7NABGMB16150765564
reply from Isopure

Isopure Unflavored is a smoothie's best friend! ❤️

Aug 26, 2025
Reviewer name: annieo19_7443
5 out of 5 stars
5 out of 5 stars review

Add protein to anything!

[This review was collected as part of a promotion.] I received the isopure unflavored protein with vitamins courtesy of influenster in exchange for my honest review. I really like this product! It has good macros and because it is unflavored, I can mix it in with whatever I want. Sometimes I add it to coffee, dips, or sauces. This product is a great way to increase your daily protein intake. I will definitely purchase this product again in the future!

Review from Glanbia Performance Nutrition, Inc.
Helpful?70GIW7NABGMB16150765564
Jul 26, 2025
Reviewer name: made_in_ne_8544
3 out of 5 stars
3 out of 5 stars review

Seriously no flavor whatsoever

[This review was collected as part of a promotion.] I swapped out my typical plant protein in my morning smoothie to give this a shot. They're not kidding when they say it's unflavored: you taste nothing. It does still have the smell and texture and aftertaste of whey, but there's no overt taste. This may be a great product for cooking or baking, but I can't recommend drinking it on its own. That said, the nutrition profile is excellent. 110 calories for 25 grams of protein and no carbs is incredibly helpful for hitting your macros.

Review from Glanbia Performance Nutrition, Inc.
Helpful?70GIW7NABGMB16150765564
reply from Isopure

Try Isopure Unflavored in cooking or baking and let us know what you think!

Jul 22, 2025
Reviewer name: yourlola_8928
5 out of 5 stars
5 out of 5 stars review

Yuum!

[This review was collected as part of a promotion.] I absolutely love this Zero Carb Isopure protein! One of the best things about it is the complete lack of smell — it’s truly odorless, which is rare for protein powders. I added a full scoop to my chia pudding made with coconut milk, and the taste didn’t change at all — amazing! It dissolves so easily and leaves no trace of texture or aftertaste. I’m genuinely impressed and thrilled with this product!

Review from Glanbia Performance Nutrition, Inc.
Helpful?70GIW7NABGMB16150765564
reply from Isopure

With Isopure Unflavored, the possibilities are endless!

Jul 8, 2025
Reviewer name: meaganrose15_4655
5 out of 5 stars
5 out of 5 stars review

Love

[This review was collected as part of a promotion.] I chose this one. It is a zero carb protein powder, easy mixability. The packaging was great. It is a decent value for the price. It is very effective for protein powders and the taste is unflavored so it’s not terrible. You can mix it in whatever Scott all your ingredients on the back, it’s got 25 g of protein 0 g of carbs zero sugar, 20 vitamins and a lot more good stuff up in therehighly recommend

Review from Glanbia Performance Nutrition, Inc.
Helpful?70GIW7NABGMB16150765564
Jul 15, 2025
Reviewer name: biancapachec0_3447
5 out of 5 stars
5 out of 5 stars review

A clean, versatile protein that mixes well and sup

[This review was collected as part of a promotion.] I’ve been using Isopure Zero Carb Unflavored protein for a few weeks now and it’s been a solid addition to my daily routine. I love that it’s truly unflavored, which makes it super versatile, I can mix it into smoothies, oatmeal, or even soups without altering the taste. The mixability is great; no clumps when shaken properly. It’s also gentle on my stomach and doesn’t cause bloating, which has been an issue with other brands. I really appreciate the zero carb content, especially since I’m watching my macros closely. The packaging is sturdy and keeps the powder fresh.

Review from Glanbia Performance Nutrition, Inc.
Helpful?70GIW7NABGMB16150765564