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Customer reviews for ISOPURE Whey Protein Isolate, Unflavored, 1.55 lbs. for
ISOPURE Whey Protein Isolate, Unflavored, 1.55 lbs.
4.4 out of 5 stars
stars
122 ratings118 reviews
  1. 5 stars58% (71)
  2. 4 stars28% (34)
  3. 3 stars9% (11)
  4. 2 stars1% (1)
  5. 1 star4% (5)

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Showing 21-30 of 118 reviews
Oct 22, 2025
Reviewer name: Bob C
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Perfect!

Perfect protein product. No junk. Dissolves easy.

Review from Glanbia Performance Nutrition, Inc.
Helpful?70GIW7NABGMB16150765564
Feb 22, 2026
Reviewer name: Christine
3 out of 5 stars
3 out of 5 stars review

Doesn’t mix well

Lots of clumping. Doesn’t mix well. To mix in coffee and be able to drink it you’re going to need a blender.

Helpful?70GIW7NABGMB16150765564
Sep 7, 2025
Reviewer name: jessicam1887_4459
4 out of 5 stars
4 out of 5 stars review

Easy to use protein powder

[This review was collected as part of a promotion.] Isopure zero carb unflavored powder is a great product to get some extra nutrients and vitamins into your diet. It is unflavored and can be added to anything.

Review from Glanbia Performance Nutrition, Inc.
Helpful?70GIW7NABGMB16150765564
Oct 24, 2025
Reviewer name: blu_beautyyy_1773
3 out of 5 stars
3 out of 5 stars review

Ok, not the best

[This review was collected as part of a promotion.] Mixes very well but doesn't taste the best. No texture noticed when sipping it. I'm just personally not a fan of the taste even tho it's “unflavored”.

Review from influenster.com
Helpful?70GIW7NABGMB16150765564
reply from Isopure

We recommend trying Isopure Unflavored into your favorite smoothies and juices and letting us know what you think! 👀

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
Aug 25, 2025
Reviewer name: krisseh_5374
4 out of 5 stars
4 out of 5 stars review

Blends fluffy!

[This review was collected as part of a promotion.] I like the quality of the protein. It isn't gritty, but it does blend fluffy since it's purer. That's not my favorite as it makes me gag, but it's the risk of a good protein powder. I like the fact it's multi use - baking, smoothies etc. It does have an animal like taste you can still taste in some drinks but so best for something that would mask that. Good quality though, and if you need the specialty of what it offers I'd recommend.

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

The specialist...we'll take it!

Jul 10, 2025
Reviewer name: chayay45ad_2958
5 out of 5 stars
5 out of 5 stars review

Amazing

[This review was collected as part of a promotion.] This is a relatively good protein powder. I like the fact that it's unflavored, so it doesn't change the flavor of your smoothie. It mixes very well. The taste is okay because it has no flavor packaging is good and the effectiveness. I can tell the difference. It brings between my workouts that I gained a little more strength and I believe it's affordable

Review from Glanbia Performance Nutrition, Inc.
Helpful?70GIW7NABGMB16150765564
Jul 20, 2025
Reviewer name: madir24_8256
4 out of 5 stars
4 out of 5 stars review

Clean protein ideal for custom shakes

[This review was collected as part of a promotion.] If you’re looking for a high-quality whey isolate without the extra sugar, carbs, or unnecessary ingredients, this is it. Pros: Truly unflavored: No sweeteners, no artificial taste, no funky aftertaste. It blends well into just about anything—smoothies, oatmeal, coffee, even soups. Zero carbs + loaded with vitamins: Great for low-carb or keto diets. The added micronutrients are a nice bonus. Mixes easily: A few shakes in a bottle or a quick whirl in a blender, and you’re good to go. No clumping. Cons: Unflavored doesn’t mean tasteless: It has a slightly milky, chalky taste when mixed with plain water. Not bad, but not something I’d drink straight without mixing it into something else. Can be pricey: You’re paying for high purity and added vitamins, but if you're just looking for basic protein, there are cheaper options. Bottom line: If you want a clean, versatile protein supplement that won't interfere with flavors in your custom blends, this is one of the best out there. Just don’t expect it to taste like a milkshake on its own.

Review from Glanbia Performance Nutrition, Inc.
Helpful?70GIW7NABGMB16150765564
Aug 28, 2025
Reviewer name: joelle305_6638
5 out of 5 stars
5 out of 5 stars review

It's actually tasteless!

[This review was collected as part of a promotion.] Our whole family agreed that this protein powder truly is tasteless! This is a huge plus for us, as we're always trying to find ways to incorporate more protein into our diet. We tried it in a smoothie and added it to a tomato basil pasta sauce. My picky 6-year-old even asked for seconds! We can't wait to try this powder in more ways.

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

You'll have to let us know what else you try Isopure Unflavored with!