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 6,291-6,300 of 11,986 reviews
Aug 16, 2024
Reviewer name: susanb176
5 out of 5 stars
5 out of 5 stars review

Stay alert

[This review was collected as part of a promotion.] I’ve taken these 2 a day for almost a week and actually I have seen a small improvement in my mental clarity,which truly surprises me. I am looking forward to forward to weeks to come to see how sharp my brain gets.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Aug 25, 2024
Reviewer name: Anonymous
5 out of 5 stars
5 out of 5 stars review

Good choice

[This review was collected as part of a promotion.] If focus is your focus than give these a try. The label instructs to use three capsules however, I only take two and two seems to be quite enough for me. I weigh 150 lbs and am in excellent physical condition. These supplements really work. What I mean is this: thinking and focusing like never before. Like major intense awareness. Yet peaceful and serene at the same time. I take two capsules in the morning with one cup of Starbucks and “ZINGGGG” within 15 minutes I am dialed in. I take two capsules every day and even after two months daily I can stop taking these and there are zero side effects accept the awareness that I am not dialed in as usual but no big deal. Being overly focused is not really necessary for me every day but I must admit it is a fun and energizing experience.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Aug 29, 2024
Reviewer name: a_dod
4 out of 5 stars
4 out of 5 stars review

Big capsules but good focus

[This review was collected as part of a promotion.] Taste isn’t too bad if you get it down fast but they are pretty big capsules. I do feel like my focus is better when I take this but not sure about my memory. I will buy another bottle to see if it gets better the longer you take as I have only been taking them for about a month

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
May 7, 2025
Reviewer name: mickeyb8_3080
5 out of 5 stars
5 out of 5 stars review

Great for your memory and focus.

[This review was collected as part of a promotion.] It is very effective with my focus. It's packaged in a bottle easily seen. It don8havr a bad taste so it's easy to swallow. The vale is great also. It doesn't have alot of ingredients so it's good for you.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Apr 26, 2025
Reviewer name: lyn16_6866
4 out of 5 stars
4 out of 5 stars review

Focus!!!

[This review was collected as part of a promotion.] I’ve been using Onnit Alpha Brain for a few weeks and have noticed a subtle but real boost in focus and mental clarity. It’s especially helpful during long workdays or when I need to stay sharp for extended periods. I like that it’s caffeine-free, so I don’t get jitters or crashes. While results may vary, it’s been a helpful addition to my daily routine.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Sep 3, 2024
Reviewer name: duyn8
4 out of 5 stars
4 out of 5 stars review

Support daily task

[This review was collected as part of a promotion.] I've been taking Onnit Alpha Brain for a week now, and I’m pretty impressed. The boost in focus and mental clarity is noticeable, especially when I’m tackling challenging tasks. I also appreciate that it doesn't come with the jittery side effects some other nootropics do. The only downside is the price—it’s a bit on the higher side. Overall, it’s a solid supplement and definitely worth trying if you’re looking to enhance your cognitive performance.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Feb 21, 2021
Reviewer name: Tutz67
5 out of 5 stars
5 out of 5 stars review

Excellent Product. It Delivers.

I have been using this product for about a month and it has changed me. I retired about a year ago and I slowly became so sluggish and could not remember things I was going to do. Now I get up every morning and I am so focused I accomplish everything I want to do that day. I will never go without Alpha Brain each morning with my breakfast. It is refreshing to find a product that delivers on their claims. My husband is now calling me the "machine" I used to be before I retired. Thank you.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
May 25, 2020
Reviewer name: Michaelr578
1 out of 5 stars
1 out of 5 stars review

Didn't do anything and that's the honest truth

I bought into the genius marketing especially since I follow Joe Rogan. I've been fascinated by the idea of using nootropics for a while and took the plunge with these. I bought three bottles I plan on using all of it since I already paid but I've been using them for a month at the recommended to capsule per dosage. the first day or two I may be felt a slight uptick in energy but other than that my cognition, focus mental acuity etc has not improved whatsoever. I wish I could even give it three stars but then I would be doing all of you a disservice. Save your money!

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

Thanks for reaching out and leaving a review! Apologies that Alpha Brain did not work for you. Everyone reacts differently to supplementation, and it's not uncommon to have different experiences. That being said, if you are ever dissatisfied with your order, you can always contact us directly so that we can assist you further.

Apr 9, 2015
Reviewer name: csweet
5 out of 5 stars
5 out of 5 stars review

INSTANT improvement in mental performance

I use a lot of different strategies (the usual suspects: high quality food, water, exercise, meditation, and sleep) to optimize my energy levels, but Alpha Brain has taken me to another level. I seriously feel Super Sayan at times. While you cannot create more time, this supplement is the closest thing I have found to it because of the lucid dreams. The best part...no crash. Just consistent flow.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Mar 22, 2025
Reviewer name: jdc732_532
5 out of 5 stars
5 out of 5 stars review

Very excited to try these

[This review was collected as part of a promotion.] I have been using these supplements for just over a week now. I didn't notice anything out of the ordinary the first few days as expected, but have seen some slight improvements now that they have been in my system for awhile. Overall, I feel like I am more alert throughout the day. I am more focused with the task at hand. Now, I can't say for sure that it is directly related to these supplements or the fact I made changes in my personal life. I am not a scientist and not 100% sure exactly what is in this product, but I do love the fact that there is no caffeine in the ingredients. I will continue to use as I still have about half of the bottle left and who knows, maybe I will see more of certain increase when it comes to my memory and focus.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153