Skip to Main Content
Sam's Club
Sam's Club
All Departments
All Services
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)

Member photos

Sort by |
Showing 11-20 of 118 reviews
Mar 20, 2026
Reviewer name: TONI
5 out of 5 stars
5 out of 5 stars review

Excellent, clean protein powder. I use it in my oatmeal, plain non fat greek yogurt,and unsweetened almond milk and love it. The best protein powder on the market. I love the fact that it is also loaded with essential vitamins and minerals since I do not take any vitamins. Thank you Sam's club for carrying this product at such a good price. You definitely beat out GNC and The Vitamin Shop.

Helpful?70GIW7NABGMB16150765564
Oct 19, 2025
Reviewer name: Anne
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Recommend

Good product, smooth taste.

Helpful?70GIW7NABGMB16150765564
Feb 2, 2026
Reviewer name: Kendria
5 out of 5 stars
5 out of 5 stars review

I love it I mix a scoop in my protein shakes it's perfect it makes the best protein shakes I love it being unflavored I can mix whatever I want in it n it turns out great!!!

Helpful?70GIW7NABGMB16150765564
May 6, 2026
Reviewer name: anonymous
1 out of 5 stars
1 out of 5 stars review

Ripoff!!!

This is 100% rip off. It may be quality protein, but it's twice the price for half as much as the nasty flavored stuff that's full of garbage. there's better stuff available at a much better price elsewhere.

Helpful?70GIW7NABGMB16150765564
Sep 15, 2025
Reviewer name: bellassanctuary_2465
5 out of 5 stars
5 out of 5 stars review

Awesome product

[This review was collected as part of a promotion.] Honestly I think it’s an awesome product. It has no flavor and I didn’t think it tasted like some proteins where it’s chalky. It was very easy to mix into other drinks and into my meals. I’d definitely recommend buying it.

Review from Glanbia Performance Nutrition, Inc.
Helpful?70GIW7NABGMB16150765564
Sep 17, 2025
Reviewer name: inkd_disaster_6387
4 out of 5 stars
4 out of 5 stars review

Great Whey Protein Powder

[This review was collected as part of a promotion.] This is the second Isopure Whey Protein powder I have tried. I really like the natural, clean ingredients and 0 sugar. It has 20+ vitamins and minerals. This one I received was unflavored but I couldn’t really stand the weird taste it had. Maybe it’s just me but I did not care for it at all. I do however take it because I like the ingredients and 25 grams of Protein it provides.

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

We recommend trying Isopure Unflavored in smoothies and juices and letting us know what you think!

Oct 14, 2025
Reviewer name: David K
4 out of 5 stars
4 out of 5 stars review

if you want something super simple then this is the product for you. I am not necessarily a fan of unflavored protein powders but i can see a use case for it. for example, when you want to make a dish and want to have extra protein without completely altering the flavor of it. also the macros are very good. good amount of protein per serving and not too many calories either. i also like the simple ingredients list

Review from ExpertVoice.com
Helpful?70GIW7NABGMB16150765564
Dec 29, 2025
Reviewer name: Ariel
4 out of 5 stars
4 out of 5 stars review

A for effort but doesn't always hit the mark

I'm still trying to figure out if i like this product. Although it's "flavorless", when it's added to anything plain it gives a horrible taste in my opinion. I think in a homemade protein smoothie it would be okay but i would put it in a mason jar with a cold liquid and shake really well before adding it even to a blender. It clumps very easily....anyone saying it mixes with ease is probably sponsored by this product. LOL :P I added it to hot coffee and used a frother which just made it clump and curdle. The product itself seems great as far as ingredients but definitely takes a little figuring out to find something it's good in . I was hoping i could just add it to almond milk or coffee and be good to go but it's definitely not that simple unfortunately.

Helpful?70GIW7NABGMB16150765564
Oct 26, 2025
Reviewer name: alp13_4595
5 out of 5 stars
5 out of 5 stars review

Great source of protein

[This review was collected as part of a promotion.] Received this product from influenster for a honest review. This is a great unflavored powder when you add flavor to it. Unflavored tastes strange & unpleasant in my opinion. I think you get good value seeing how similar products go for more typically

Review from influenster.com
Helpful?70GIW7NABGMB16150765564
Oct 16, 2025
Reviewer name: KayToy
5 out of 5 stars
5 out of 5 stars review

Love Unflavored - versatile

I love this product. Mix with a small amout of liquid to smooth the lumps and then mix in the total amount of liquid. If the liquid is too hot the whey tightens up into little chunks, tempering the whey helps. I can add my own flavorings or spices or fruit, and sweeteners, if needed. It is a great base with a slightly cooked milk flavor profile. With a strong flabor like chocolate or mango fruit - can't really taste it, with tea or coffee it adds a milky flavor.

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