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 4,421-4,430 of 11,986 reviews
Aug 26, 2024
Reviewer name: hdine22
4 out of 5 stars
4 out of 5 stars review

Good vitamins!

[This review was collected as part of a promotion.] These Onnit brand Alpha Brain vitamins are really nice! I like them so far, and I do feel like they help my mind feel a little sharper and like I can think a bit clearer. My husband has also been trying them and loves them. I am excited to keep using them and see how they continue to help. I would recommend these!

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Jul 6, 2025
Reviewer name: harumio_5428
4 out of 5 stars
4 out of 5 stars review

Decent Start

[This review was collected as part of a promotion.] So I’m on day 3 of testing out Alpha Brain, and here’s my honest take so far. Still early, but I think I’m starting to feel a bit more focused especially in the mornings. Not a huge change, but I notice I’m a little more dialed in and less easily distracted. No side effects yet, which is a win. As for the taste well, the capsules don’t really have a strong flavor, which is great. They go down pretty easily, no weird aftertaste or anything gross. If you’re sensitive to taste, you’ll be fine. Packaging-wise, it looks clean and professional. The bottle feels high-quality, and the branding is pretty sleek. It definitely gives “premium supplement” vibes. Still too early to give a final verdict, but I’m curious to see what changes (if any) show up over the next week or so. For now, I’d say it’s off to a decent start

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Jul 20, 2025
Reviewer name: hollych987_4148
5 out of 5 stars
5 out of 5 stars review

Sharper Focus, Clearer Mind – Game-Changer!

[This review was collected as part of a promotion.] I’ve tried a few nootropics before, but Onnit Alpha BRAIN® truly stands out. Within the first week, I noticed a huge difference in my focus, memory, and mental clarity—especially during long work sessions and multitasking days. No jitters, no crashes—just smooth, sustained brain power. I feel more productive and even more articulate in conversations. It’s become part of my daily routine, and I honestly don’t want to go without it. If you’re looking for that extra mental edge, this is it. Highly recommend!

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Apr 22, 2025
Reviewer name: lagueritaloquita_1944
3 out of 5 stars
3 out of 5 stars review

Vegan, gluten free, and caffeine free

[This review was collected as part of a promotion.] I received this Onnit Alpha Brain Supplement complimentary from Influenster in exchange for my honest feedback. This supplement helps to support focus, memory, and reaction time. This supply is also vegan, gluten free, and caffeine free. Over time this helps to improve memory, focus, and cognitive processing speed. You take two capsules a day along with a meal.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Jun 20, 2025
Reviewer name: rocioc9af3_455
5 out of 5 stars
5 out of 5 stars review

Excellent

[This review was collected as part of a promotion.] This ALPHA BRAIN from ONNIT is really of excellent quality. They are capsules that help you in your daily cognitive support. They help you maintain focus, memory, and reaction time. It is effective because it keeps you focused and clear in your daily routines, and you feel clear-minded because it promotes Flow State. It is very easy to use because you only have to take the capsule. I recommend it.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Apr 21, 2025
Reviewer name: krystag5_2858
4 out of 5 stars
4 out of 5 stars review

A slight improvement in focus!

[This review was collected as part of a promotion.] I decided to try these in a few different settings where an improvement on memory and focus could be most beneficial. I took them at work, as well as at home to have something to compare to. I feel like I did notice an improvement in my attention span while working on data entry tasks at work, and it also seemed to be beneficial while doing a big LEGO project at my house with lots of little directions to follow. I don’t feel like it was a giant change, but was happy to give it a try. Because they are capsules there was no flavor/taste connected to them. The bottle was easy to open, and not overly large so it was small enough to toss into my bag for work.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
May 10, 2025
Reviewer name: annl28_5932
3 out of 5 stars
3 out of 5 stars review

Aids flow state but needs consistent evidence

[This review was collected as part of a promotion.] It could be placebo but I did find that I was able to focus and get into a flow state easier when taking these! The capsule is rather large but there’s no noticeable taste so it’s not unpleasant to take. I’m interested to see if I feel any long term benefits with consistent use- the one caveat is that a full dosage is 2 pills so these probably won’t last one very long.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Jul 18, 2025
Reviewer name: nhip10_8856
4 out of 5 stars
4 out of 5 stars review

Great but a little pricey

[This review was collected as part of a promotion.] Its actually considered a good product. It has no taste and odor when you take it. It actually support my brain. I stay awake in the morning without coffee because of it. So i think it works. However, it think it is alittle pricey when it comes to supplement. Overall 4/5z

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Aug 18, 2024
Reviewer name: bliggins2
5 out of 5 stars
5 out of 5 stars review

Caffeine free!

[This review was collected as part of a promotion.] I would have to believe that these are pretty effective. I love that the ingredients do not include caffeine as I am super sensitive to it but I still need the energy to focus this is a big plus in my eyes.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Jul 30, 2025
Reviewer name: evanessancet_4884
3 out of 5 stars
3 out of 5 stars review

Ehhh

[This review was collected as part of a promotion.] I started with one tablet as recommended before increasing to a whole serving. I appreciate that the tablets are a pretty standard size so not difficult to swallow but made me a little queasy. Overall, I did not discern a notable difference.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153