Skip to Main Content
Sam's Club
Sam's Club
All Departments
All Services
Customer reviews for ONNIT Alpha BRAIN Nootropic Brain Health Supplement Capsules, 78 ct. for
ONNIT Alpha BRAIN Nootropic Brain Health Supplement Capsules, 78 ct.
3.8 out of 5 stars
stars
12K ratings11.9K reviews
  1. 5 stars52% (6,258)
  2. 4 stars15% (1,793)
  3. 3 stars10% (1,251)
  4. 2 stars7% (859)
  5. 1 star16% (1,909)

Member photos

Sort by |
Showing 5,811-5,820 of 11,986 reviews
Oct 18, 2023
Reviewer name: Gori
3 out of 5 stars
3 out of 5 stars review

Too soon to judge, for me

Started in August and didn’t notice any significant improvements, so took a pause when the bottle finished in the hope that when I decide to continue (now), I’ll be able to notice a change. Have an order for 3 bottles, roughly 3-months, so I’ll know more then.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
reply from Onnit Customer Service

Thanks for giving Alpha Brain a shot and for sharing your experience! Everyone's experience can be a bit different with a formula like this. It's formulated to help support memory, focus, and processing speed, and it can take some regular use to really feel these changes. We suggest trying it for at least two weeks and if you still aren’t happy we can help with some supplement tips and/or to help facilitate a return if needed. You can email help@onnit.com for further assistance with your order!

Apr 10, 2020
Reviewer name: Discobolis
5 out of 5 stars
5 out of 5 stars review

My Brain is JACKED

While taking Alpha BRAIN the last few months I have not noticed any conscious differences in how I feel physically or mentally. What I have noticed is the following: First, when drinking a few cups of coffee in the morning and then taking the recommended dose of Alpha BRAIN in the early afternoon by evening my brain is so wired I cannot sleep at night. After doing some Googling I saw some recommendations by other users to take it in the morning with breakfast. I've switched to the recommended dose of Alpha BRAIN and one regular cup of coffee late morning to get back to sleeping regularly. If I drink extra coffee or miss taking Alpha Brain in the morning I take half the recommended dose...or sometimes skip it altogether if I haven't slept in 1-2 nights. Secondly, I've noticed changes in the way co-workers and upper management have responded to my work and within our recent interactions. Always felt like my efforts and overall body of work were under appreciated. I have a tendency to be too wordy and not straight to the point...not by design. I just freaking ramble. Looking at Joe Rogan's comments about formulating sentences better, faster has me wondering what the heck is up with my brain because as that's how I feel and I can see it in peoples reactions. I've never taken supplements before for for the purpose of being a nootropic. Doing some research I've noted that I'm already consuming things that are considered nootropics (caffeine, creatine). Based on the affects I've noticed in my interactions with others while taking Alpha BRAIN it will remain part of the arsenal. Cheers.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Mar 22, 2025
Reviewer name: jeng63_5705
5 out of 5 stars
5 out of 5 stars review

great supplement

[This review was collected as part of a promotion.] I was very skeptical about the claims when I first tried it, but I'm a full believer now. I feel more focused and calm. A great supplement for busy people who could use some improved focus and memory.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Mar 28, 2025
Reviewer name: lauram5_1209
5 out of 5 stars
5 out of 5 stars review

Had some great focus days!

[This review was collected as part of a promotion.] I have really enjoyed trying my Alpha BRAIN supplements. The capsules are easy to swallow and they don’t upset my stomach at all. While it could be a coincidence, I’ve definitely noticed some very focused and productive days since I started taking them. I believe it would take consistent use over 4–6 weeks to really gauge any long-term improvements in brain or memory function, but so far, the experience has been a positive one. All in all, I think Alpha BRAIN is worth trying if you’re looking for a potential boost in focus and mental clarity.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Mar 25, 2025
Reviewer name: helenn59_5252
2 out of 5 stars
2 out of 5 stars review

Alpha Brain

[This review was collected as part of a promotion.] My mom has bad memory so I let her try this, the dose was too strong. She took 2 in the morning after breakfast and felt dizzy and vomited after that. She has to took 2 days off work just to recover.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
reply from Onnit Customer Service

Thank you for sharing your experience with this formula, we’re sorry to hear that it wasn’t a positive one! Everyone's experience with supplementation is unique to them, and we would like to learn more about yours. You will be contacted by someone on our Customer Service team shortly so we can support you directly in this matter. -- Kristen ONNIT Customer Service Associate #getonnit

Aug 4, 2022
Reviewer name: Nathaninaustin
1 out of 5 stars
1 out of 5 stars review

Garbage!!!

Just another waste of money. Just another over-hyped product. This stuff did absolutely nothing! I used as directed and didn't notice anything at all. Do not buy this product. The only reason why I am even giving it 1 star is because the shipping was on time. Garbage!

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
reply from Customer Experience

Thanks for leaving a review! We're bummed to hear that Alpha Brain did not work as you expected. We all respond to supplements differently, not only in how they affect us but how quickly they affect us. With a supplement like this, it can take some regular use to really feel the changes.That being said, we would never want you to feel stuck with a product that didn't meet your expectations, and if you reach out to our customer experience team, they'd be happy to help further!

Jun 29, 2025
Reviewer name: britt_erica_7474
4 out of 5 stars
4 out of 5 stars review

Curious

[This review was collected as part of a promotion.] I received the Onnit Alpha Brain supplements for free from influenster in exchange for my honest review. Seems to have quality ingredients , like b6 , etc. I have not taken long enough to see any real effects. Will post a follow up review.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
May 3, 2025
Reviewer name: desireegina_3696
5 out of 5 stars
5 out of 5 stars review

Focus Supplement

[This review was collected as part of a promotion.] I received this memory and focus supplement; Alpha Brain by Onnit, from influenster in exchange for my honest review. I have now taken it for about two weeks and I think with continued use it could be very beneficial. I like that it assists mental clarity, and doesn't have caffeine. I think daily use will give me the results I'm looking for.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Aug 16, 2024
Reviewer name: angelob4
5 out of 5 stars
5 out of 5 stars review

Brain power onnit

[This review was collected as part of a promotion.] I did receive this free from influenster for my honest review and I was just thrilled about this product, especially when it's something supposed to better my decision making and make me smarter,heck yeah .thanks so much!!

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Mar 22, 2025
Reviewer name: scouto_2487
4 out of 5 stars
4 out of 5 stars review

No morning fog

[This review was collected as part of a promotion.] Alpha brain leaves me with a clear mind, I haven’t found myself waking up with a morning fog since I began taking it. It does not have an aftertaste and the bottle is easy to open. Good bang for your buck with this product.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153