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 3,181-3,190 of 11,986 reviews
May 8, 2025
Reviewer name: Cam C
1 out of 5 stars
1 out of 5 stars review

Verified Purchase

No Noticeable Difference

i'm sure it's healthy but i didn't notice any difference, mental clarity etc that i hear talked about and over hyped all the time

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

Thanks for reaching out and leaving a review! So sorry to hear that Alpha Brain did not work for you. Because everyone reacts differently to supplementation 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 time to notice these effects. That being said, if you are ever dissatisfied with your order, you can always contact our Customer Service team for further assistance! -- Kristen ONNIT Customer Service Associate #getonnit

Mar 5, 2023
Reviewer name: Virginia523
2 out of 5 stars
2 out of 5 stars review

Verified Purchase

No side effects, but no noticeable benefit

The product provided no noticeable benefit and stopping the product caused no detriment. Maybe has effect on some people, but not for me. Thanks!

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

​​Thanks for leaving a review about your experience with Alpha Brain! We’re bummed to hear that you didn’t have the experience that you expected while taking it. Being that we all have different needs, it's expected that we all respond to supplements a bit differently. Please feel free to reach out to us directly by emailing help@onnit.com if you need further assistance.

Aug 22, 2020
Reviewer name: Artie
3 out of 5 stars
3 out of 5 stars review

Verified Purchase

I think it’s awesome?

Not really sure if it’s working but I enjoy knowing I’m taking something good for my body......I think...

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!

Dec 31, 2022
Reviewer name: Glenm
1 out of 5 stars
1 out of 5 stars review

Verified Purchase

Horrible Headache

Horrible headache and nausea every single time. It didn’t matter if I took food before with or after. I also drink plenty of water. Not worth it.

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

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.

Aug 21, 2021
Reviewer name: Jeremiah J
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Most important supplement of the day

Feel more alert and not fumbling to find the correct words as much as I do without it. It really does work.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Feb 17, 2023
Reviewer name: Anonymous
3 out of 5 stars
3 out of 5 stars review

Verified Purchase

Alpha brain

Not what I was expecting. I didn't notice any difference really. Disappointing, cuz I was wanting the big effect like the advertisement says. But...

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 - 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!

Apr 20, 2022
Reviewer name: Teacher needs help
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Alpha Brain

I take 2 an hour before I get out of bed. I wake up feeling awake and ready for my day. No jittery feeling, no crash, just mental clarity!

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Aug 24, 2020
Reviewer name: crikey dick
1 out of 5 stars
1 out of 5 stars review

Verified Purchase

Absolute rubbish I want my money back

Absolute rubbish gave me headaches and felt like spewing, you should not be able to sell this product

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Nov 6, 2023
Reviewer name: Anonymous
3 out of 5 stars
3 out of 5 stars review

Verified Purchase

Not as great as they say.

It was ok. Didn’t do what they said it would, but it did give a little extra focus. Made me very nauseated the first few days.

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.

Dec 28, 2019
Reviewer name: Anonymous
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Alpha brain

So far very happy with my purchase can only hope that it becomes available to purchase here in Australia delivery process is long

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153