Skip to Main Content
Sam's Club
Sam's Club
All Departments
All Services
Customer reviews for Optimum Nutrition Micronized Creatine Powder, Unflavored, 23.8 oz. for
Optimum Nutrition Micronized Creatine Powder, Unflavored, 23.8 oz.
4.1 out of 5 stars
stars
127 ratings56 reviews
  1. 5 stars64% (81)
  2. 4 stars11% (14)
  3. 3 stars7% (9)
  4. 2 stars4% (5)
  5. 1 star14% (18)

Member photos

Sort by |
Showing 1-10 of 56 reviews
Jan 4, 2026
Reviewer name: Michael
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

On Nutrition is a great product.

I’ve tried different brands, cannot honestly say there is a big difference if one works better than the other. What I do like better, ON is not actually a powder like the last brand I tried which makes it mix and dissolve better.

Helpful?61CMFNRKJFYM17797605150
Feb 7, 2026
Reviewer name: CT
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Great deal on a great brand

Creatinine is so underused but is a great supplement supported by vast research. It's also not expensive to produce so I never like that companies mark it up so much. ON is generally a trustworthy brand and this price at Sam's was too good to pass up. I fear it was on clearance though, so I stocked up!

Helpful?61CMFNRKJFYM17797605150
Jun 3, 2026
Reviewer name: Tom
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Ridiculous price for High quality product

Not my regular brand, but with Sam's Club's sale price it was irresistible. I went back a second time and bought all I thought I could consume before the expiration date.

Helpful?61CMFNRKJFYM17797605150
Aug 21, 2026
Reviewer name: Kimberly G
5 out of 5 stars
5 out of 5 stars review

Best Creatine

If you are looking for something that has multiple studies & is great for muscle growth I strongly recommend taking optimim nutritions creatine. Out of all the creatines I have tried I will say this one is the best. It easily dissolved with my beverage and had a decent taste compared to others. Although there is always that option to mix it with electrolytes or a water protien. Personally, I like to take it with electrolytes so I remain hydrated.

Review from ExpertVoice.com
Helpful?61CMFNRKJFYM17797605150
Mar 14, 2026
Reviewer name: Isaac C
5 out of 5 stars
5 out of 5 stars review

Great Product

I feel the creatine helped with my focus, strength, and more stamina when working out. I was doing longer reps than I had ever done before. The flavor of the creatine isn't very strong which I like and is very easy to drink. I feel like this item is beginner and expert friendly. This could be the product you are looking for if you want that extra push in the gym. Great product and it is very affordable.

Review from ExpertVoice.com
Helpful?61CMFNRKJFYM17797605150
May 2, 2026
Reviewer name: Korey H
5 out of 5 stars
5 out of 5 stars review

Yet another subscription

Before Creatine: I was strong. After Creatine: I was stupid strong. My deadlift spiked 70lbs to almost 5 plates within a month of getting on the goods. I am a believer and hooked. Ok, it wasn't just some magic powder that is probably on some banned list. But I was able to noticable go harder at everything in the gym and in the mountains. It certainly paid off in areas like gym lifting where it is easier to get measurable results. I guess this will now be like my iCloud and Spotify subscriptions – paying for life!

Review from ExpertVoice.com
Helpful?61CMFNRKJFYM17797605150
Aug 17, 2026
Reviewer name: Theo K
4 out of 5 stars
4 out of 5 stars review

Best Creatine

I use this stuff daily. Great creatine with affordable pricing, however it doesn't mix exceptionally well. Totally fine if you don't mind a little grittiness in your water.

Review from ExpertVoice.com
Helpful?61CMFNRKJFYM17797605150
Mar 19, 2026
Reviewer name: MR
3 out of 5 stars
3 out of 5 stars review

Verified Purchase

Just OK

First time trying creatine but this one does not dissolve completely. Not sure if all creatine is like that or just this brand. Not sure I would purchase again.

Helpful?61CMFNRKJFYM17797605150
reply from Optimum Nutrition

Creatine is a product that does not fully dissolve, so rest assured that this is completely normal. Note that creatine should be consumed immediately upon mixing.

Apr 14, 2026
Reviewer name: anonymous
1 out of 5 stars
1 out of 5 stars review

Do not bother

Boy o boy this stuff is bad it doesn’t dissolve has a distinct taste and doesn’t come with a scoop at all. It is less a powdered product and more of a sandy product it was an immediate return … severely disappointed two thumbs down.

Helpful?61CMFNRKJFYM17797605150
reply from Optimum Nutrition

We are sorry to hear of the experience you’ve had with unflavored Micronized Creatine Powder. We greatly appreciate you bringing your concern to our attention and would love to hear from you so we may have a chance to resolve this directly with you. We are available M-F 8:30am - 5pm CST and can be reached at oncustsuppus@optimumnutrition.com

Feb 15, 2026
Reviewer name: anonymous
1 out of 5 stars
1 out of 5 stars review

Missing 27% of declared NET WT

missing .4 LB from declared net WT. It has tons of room inside container for the product, but it is missing. the packaging was sealed, so it makes me think it comes that way from manufacturer. Now that there is lack of transparency on weight I doubt the quality of the product.

Helpful?61CMFNRKJFYM17797605150
reply from Optimum Nutrition

We are sorry to hear of the experience you’ve had with your purchase. We greatly appreciate you bringing your concern to our attention and would love to hear from you so we may have a chance to resolve this directly with you. We are available M-F 8:30am - 5pm CST and can be reached at oncustsuppus@optimumnutrition.com