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 5,861-5,870 of 11,986 reviews
Jul 7, 2025
Reviewer name: tranvo90_6352
4 out of 5 stars
4 out of 5 stars review

Backed by limited clinical studies, it works for s

[This review was collected as part of a promotion.] Onnit Alpha Brain** is a caffeine-free nootropic designed to enhance focus and memory. Backed by limited clinical studies, it works for some, but results vary. Some users report headaches or nausea. Packaging really nice !

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Jun 25, 2025
Reviewer name: ollyyallo_4114
5 out of 5 stars
5 out of 5 stars review

Great for focus without the jitters

[This review was collected as part of a promotion.] I’ve been taking Alpha BRAIN for a short time now and I can already notice a difference. It really helps me stay focused and clear-headed, especially during busy workdays or when I’m studying. I love that it’s caffeine-free — no jitters, no crashes, just steady mental clarity. The fact that it supports memory and helps with that “in the zone” feeling makes it perfect for productivity. I feel more organized and able to concentrate for longer periods. It’s still early days for me, so I’m curious to see how it works with longer use, but so far I’m impressed. Definitely a good option if you want a cognitive boost without relying on stimulants.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Mar 24, 2025
Reviewer name: sandimariepotter_5954
4 out of 5 stars
4 out of 5 stars review

Good product

[This review was collected as part of a promotion.] Seems to be found exactly what it claims to do. I've been taking for several days, and I can already tell the difference . I can't taste an aftertaste, and a long as I drink plenty of water, they go down easy

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

Good so far

[This review was collected as part of a promotion.] These seem to be working a little so far. I’m a little more focused when doing things at work and putting things together at home. They don’t taste bad but there is a small after taste to me after I swallow. I would give it a try if you think you need it.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Mar 21, 2025
Reviewer name: mamdouhe1_6988
4 out of 5 stars
4 out of 5 stars review

Clarity!!

[This review was collected as part of a promotion.] I've noticed a significant increase in awareness and mental clarity, along with improved executive function, focus, and relaxation. I feel a greater sense of calm. The ingredients seem safe, but I would recommend doing some research and consulting with a doctor before trying them.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Aug 16, 2024
Reviewer name: stephanied654
5 out of 5 stars
5 out of 5 stars review

A must have

[This review was collected as part of a promotion.] I really love these! They taste great, easy packaging, and great ingredients! I’m definitely noticing a difference since taking these, and I think the price point is fair. I will definitely be purchasing these again.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Aug 15, 2024
Reviewer name: lillianj19
5 out of 5 stars
5 out of 5 stars review

Your day is about to get more focused!

[This review was collected as part of a promotion.] Just as easy as taking one pill that supports memory, focus, and clear thinking! Alpha BRAIN was formulated to support the neurotransmitter and acetylcholine. So whether you are working, studying, or need to focus extra Alpha BRAIN can help you dial in and focus when it matters most. What I love is that it is caffeine free since I am sensitive. Within a month of testing these vitamins I feel better than ever!

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Sep 8, 2024
Reviewer name: tamdann
3 out of 5 stars
3 out of 5 stars review

Kinda work

[This review was collected as part of a promotion.] I have been using this Alpha Brain Daily Cognitive Support for 2 weeks now and slightly feel the difference. The Nootropics really work. Being multi tasks, this helps with my focus. I am sleeping better.

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

​​Thanks for sharing your experience with Alpha Brain! Being that we're all unique individuals, everyone's experience will be a little different. Please reach out to our customer service team directly by emailing help@onnit.com if you need further assistance!

Jul 30, 2025
Reviewer name: amineb14_7657
5 out of 5 stars
5 out of 5 stars review

The Only supplement that improve focus and Mental

[This review was collected as part of a promotion.] I've been using rhis Alpha Brain supplement for a few weeks now, and I’ve noticed a significant improvement in my focus, memory recall, and mental clarity throughout the day. I take it in the morning with breakfast, and within about 30–45 minutes, I feel more mentally organized and alert, like my thoughts are firing more smoothly. I also noticed better dream recall when I take it consistently. Of course, individual results may vary, but for me, Alpha Brain delivers on its promise of cognitive enhancement without the crash and I do not mind the tast of it. Highly recommended if you're looking for a clean, effective brain booster.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Aug 31, 2024
Reviewer name: sarahsafari13
1 out of 5 stars
1 out of 5 stars review

Made me ill

[This review was collected as part of a promotion.] I unfortunately can't say much about efficacy these since it made me extremely nauseated to the point where I had to lay down all afternoon and sleep it off. It made me so dizzy. Not sure why I had a bad reaction but I wouldn't risk trying it again. The ingredients seem okay. The pills were scent free, without a distinguishable taste. They were easy to take but pricey for 15 days of servings in a bottle.

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.