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 361-370 of 11,986 reviews
May 11, 2023
Reviewer name: RVBoss
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Clarity and Focus!!!

I'm very happy with the results after taking Alpha Brain. I work 2 jobs and put in about 12 hours every day. My thoughts are clear and I'm able to focus on my multitasking much better when I take just one Alpha Brain. My husband says the same! Placing my second order now!

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Sep 15, 2020
Reviewer name: Anonymous
3 out of 5 stars
3 out of 5 stars review

Verified Purchase

Not bad not exactly great

It only came with 15 days worth of product. I'm not sure if i got the full amount to see any difference. 1 bottle should at least be 30 days worth. For the price, I'm not 100% sure 15 days is worth it. I would like to see more in a bottle with a bit more savings.

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

We appreciate you taking the time to leave some feedback! Sorry to hear that Alpha Brain didn't benefit you. Every person reacts differently to supplementation, and it's not uncommon to have different experiences. Please note that this supplement's main focus is to help support memory, focus, and processing speed. That being said, if you are ever dissatisfied with your order, you can always contact our customer experience team for further assistance!

Sep 29, 2023
Reviewer name: Tommy
4 out of 5 stars
4 out of 5 stars review

Verified Purchase

Memory efficiency

Not sure how to rate this yet, however my wife has been taking these for 15 days now and she did mention that they have helped her in tasky type work to remember the sequence better making her more efficient. I think she will have a better perspective once she finishes the second bottle.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Aug 9, 2020
Reviewer name: John Sellers
4 out of 5 stars
4 out of 5 stars review

Verified Purchase

A-brain Doing the lords work

Taking 2 of these got rid of my 3pm grogginess. Instead of pounding coffee throughout the day these just keep me sharp. Feels like my brain is working at 100% till I hit my bed at night. A bit pricey is the only complaint and keeping me from putting it on a subscription. Good stuff regardless

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Apr 14, 2025
Reviewer name: scott
1 out of 5 stars
1 out of 5 stars review

Verified Purchase

slurred words and confusion

won’t use this ever again. could feel it when it was on and when it was off had bad consequences. I work as an analyst and am active in the gym and outdoors and noticed bad things with AlphaBrain. When it was on I felt the focus but only briefly. When it was off it made me lose track of my thoughts mid-conversation and slurred my words.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Jun 13, 2020
Reviewer name: Jorgembg
1 out of 5 stars
1 out of 5 stars review

Verified Purchase

Didn’t work for me at all. Wish it did

It didn’t work for me at all. I took two a day and never felt anything like hear and read all over . I’m sure this works in most people but nothing here, I was hoping it would. I got a feeling it made me lazier because I was a lot more prior to the weeks I took it.

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. Please note that this supplement's main focus is to help support memory, focus, and processing speed - sometimes it can take a few tries to notice these effects. That being said, if you are ever dissatisfied with your order, you can always contact our customer experience team for further assistance!

Aug 1, 2021
Reviewer name: Aliza7Seventy
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Good Results

Very effective... in fact, too effective for me. The directions are to use two tablets... I only need one. I use it for the energy needed to do paper work which I don't like doing. It helps me fight my resistance to starting the work and then it keeps me focused. It's good stuff!

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Mar 26, 2015
Reviewer name: El Rincon
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Excellent Mental Focus

i have been using AlphaBrain for for 1 year. The focus, concentration, and mental acuity i feel is amazing. Enhanced vivid dreams are an added bonus. I combine with T+, and Stron Bone for my ultimate Preworkout combination. Throw in the speed & Jump ropes & ab wheel and you can have an @onnit workout almost anywhere.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Jun 5, 2020
Reviewer name: DavidTheComic
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Most Beneficial Supplement I've Ever Taken

Alpha Brain is the most important part of my all-natural diet and supplementation wellness plan. It helps to cut through mental fog and allows me to focus intently and increase my productivity as well as to maneuver thoughts and form sentences more fluidly. It 100% improves my mental acuity and cognition.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Dec 2, 2022
Reviewer name: GabeH
1 out of 5 stars
1 out of 5 stars review

Verified Purchase

Utterly Useless

I have not noticed a difference in anything in my life whatsoever since taking these. Nothing has increased - not focus, not clarity, not creativity, not mood, not mental acuity, not one single thing. Nor has anything decreased - not procrastination, not nerves, not feeling cloudy and/or tired.

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

​​Thanks for leaving Alpha Brain a review! We're sorry to hear that it has not worked as you were expecting. Everyone reacts differently to supplementation, and it's not uncommon to have different experiences. Please note that this supplement's goal is to help support memory, focus, and processing speed. For some folks, it can take a couple weeks of consistent use to really start to feel the benefits. That being said, if you are ever dissatisfied with your order, you can always contact our customer experience team by emailing help@onnit.com for further assistance!