Skip to Main Content
Sams Club
Sams Club
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
stars118 ratings114 reviews
  1. 5 stars59% (70)
  2. 4 stars29% (34)
  3. 3 stars8% (9)
  4. 2 stars1% (1)
  5. 1 star3% (4)

Member photos

Sort by |
Showing 1-10 of 114 reviews
Oct 17, 2025
Beth J
5 out of 5 stars review

Verified Purchase

Great product!

I've been using Isopure Unflavored protein powder for a couple of years. It dissolves easily into beverages (I add it to my chai) and I like adding it to my smoothies, Greek yogurt and oatmeal as a way to get extra protein. I also love the large package size which means less ordering + less packaging waste!

Review from Glanbia Performance Nutrition, Inc.
Helpful?70GIW7NABGMB16150765564
Nov 10, 2025
A.D.
5 out of 5 stars review

Verified Purchase

Solid

As billed great supplement. Some tips when adding to coffee - mix separate in shaker with only 4-6oz lukewarm H2O. The mix becomes frothy and adds to coffee without clumping. Overall this has been an awesome addition to daily protein intake. Additionally, though I'm lactose intolerant no issues with my stomach. Already bought more

Review from Glanbia Performance Nutrition, Inc.
Helpful?70GIW7NABGMB16150765564
Oct 22, 2025
Bob C
5 out of 5 stars review

Verified Purchase

Perfect!

Perfect protein product. No junk. Dissolves easy.

Review from Glanbia Performance Nutrition, Inc.
Helpful?70GIW7NABGMB16150765564
Oct 19, 2025
Anne
5 out of 5 stars review

Verified Purchase

Recommend

Good product, smooth taste.

Helpful?70GIW7NABGMB16150765564
Mar 20, 2026
TONI
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
Feb 16, 2026
AnaG
5 out of 5 stars review

Taste great

[This review was collected as part of a promotion.] This protein powder mixes easily and is a good source of protein without adding sugar or carbs to my day. I love how easy it is to incorporate it into my day. I also love that there isn't a very distinctive taste.

Review from influenster.com
Helpful?70GIW7NABGMB16150765564
Feb 12, 2026
DJ
4 out of 5 stars review

Verified Purchase

Clean

No taste. Goes well in my coffee every morning. Clean ingredients compared to most. Could blend a little better but a hand blender does the trick. Reason for 4 stars.

Helpful?70GIW7NABGMB16150765564
Sep 11, 2025
Maureen
1 out of 5 stars review

Same name but different ingredients

I normally buy this item from another store - it is the same brand and same exact name. The ingredients are different, however. The version from the other store has only 2 ingredients - whey protein isolate and sunflower or soy lecithin. This version has a whole laundry list of ingredients! And I can absolutely taste the difference, this one is gross.

Helpful?70GIW7NABGMB16150765564
Mar 14, 2026
anonymous
1 out of 5 stars review

Adds a Horrific Taste to Everything!

I wanted an unflavored protein to add to my delicious smoothies and milkshakes however, this protein powder has add a horrid taste that I can't even describe to every milkshake and smoothie! I would never buy this product again it adds a milky horrid taste. Makes all my delicious smoothies and milkshakes un-drinkable!

Helpful?70GIW7NABGMB16150765564
May 6, 2026
anonymous
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