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 6,971-6,980 of 11,986 reviews
Aug 25, 2024
Reviewer name: Anonymous
4 out of 5 stars
4 out of 5 stars review

Not sure

[This review was collected as part of a promotion.] I was curious to try these - I’m happy with how easy these are to take and that there is no aftertaste. To be honest I’m not sure if I feel any different after taking them, but I’m not experiencing any side effects.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Aug 15, 2024
Reviewer name: timothyg1103
1 out of 5 stars
1 out of 5 stars review

DO NOT recommend, makes you feel dizzy and nauseous

[This review was collected as part of a promotion.] I only lasted taking this for 2 days before I stopped taking it due to it making me feel nauseous and dizzy and it made my stomach feel crampy and gave me an upset stomach. My diet and water intake was the same both days (following the recommended directions) and both times after taking it, I felt these symptoms. It’s not worth the way it made me feel to stick with it, which makes me sad because I was very hopeful.

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.

Jun 24, 2025
Reviewer name: ashleyvrussell_154
5 out of 5 stars
5 out of 5 stars review

Easy to take, good benefit for my brain health

[This review was collected as part of a promotion.] I love to have a brain supplement that has a little more benefits than the usual fish oil. Being on other medications, my brain gets drained easily so this is an easy to take supplement I’m happy is in my stack now. Makes me feel pretty alert and is easy to take.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Jul 24, 2025
Reviewer name: tramn31_9391
5 out of 5 stars
5 out of 5 stars review

i love it...!

[This review was collected as part of a promotion.] Alpha BRAIN® product by Onnit - this is a brain function support supplement, helps me increase my concentration, supports memory, increases reflexes in all senses, helps my work day become perfect... I love them...

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Mar 20, 2025
Reviewer name: mariajesuscolmenare_6361
5 out of 5 stars
5 out of 5 stars review

Excellent

[This review was collected as part of a promotion.] Very satisfied with this product. I really needed it and will buy it again. From the start, you can see the results; I feel more focused. I recommend it for new moms; our brains will thank us for it.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Jul 2, 2025
Reviewer name: mariloua_8563
5 out of 5 stars
5 out of 5 stars review

Sharper Focus and Clarity

[This review was collected as part of a promotion.] ONNIT Alpha Brain supplements deliver on their promise. I'm impressed by the high ingredient quality, clearly listed and natural. While there's no taste as it's a capsule, the sleek, professional packaging is great. I find the value excellent given the noticeable cognitive boost. It truly enhances focus and mental clarity. A highly effective supplement for daily mental performance!

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Apr 17, 2025
Reviewer name: sasha4beauty_8070
4 out of 5 stars
4 out of 5 stars review

It Works!

[This review was collected as part of a promotion.] I heard about Alpha Brain by Onnit through social media posts regarding Joe Rogan, the famous UFC commentator/ podcaster. There was controversy about whether the product worked or not due to his shares in the company. Well, now that I have tried it for myself, I can honestly say that it does, in fact, work. First of all, I was very pleased to see that it is caffeine free!! I also like that there are lots of natural herbs that I already use or am familiar with, such as L-Tyrosine, L-Theanine, Cat's Claw, L- Leucine, and B6. All of which I highly recommend. The other Focus herbs that I wasn't familiar with, I researched and found them to be equally beneficial. Located under "Other," which may refer to what the capsule is made of, is Maltodextrin. This is the one ingredient that I am not a fan of and wish they could've used an alternative. Otherwise, everything else is good. 👍🏼 I recommend this product for anyone suffering from staying focused throughout the day. I used it to help me complete my tasks when I was overwhelmed with a case load. I think in general, as we age, it's good to be proactive about anything that can prevent or improve our memory, and this is good for that also. Just DO NOT take it on an empty stomach. 9/10

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Jul 15, 2025
Reviewer name: antoniob64_1990
4 out of 5 stars
4 out of 5 stars review

Makes an impact!

[This review was collected as part of a promotion.] So I’ve been taking Alpha Brain for a week straight and was skeptical at first. I made sure to take it without any caffeine or energy boosters. I have to say it did meet my expectations. After about 15 minutes, I felt focused, awake and mental clarity on things needing to be completed. I would say it lasts about 4 hours if you take 2 pills. Overall, I am satisfied with how Alpha Brain performed.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Sep 17, 2024
Reviewer name: 12123emansfieldaveap
5 out of 5 stars
5 out of 5 stars review

Pretty good supplement

[This review was collected as part of a promotion.] I’ve been taking this supplement since I received it and I do feel a bit of a difference when I take it. I feel sharper at work, a little bit faster. It’s been good and I do think it can help somewhat.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Jul 21, 2025
Reviewer name: andread595_451
1 out of 5 stars
1 out of 5 stars review

Too strong for me

[This review was collected as part of a promotion.] Unfortunately this product didn’t work out for me. I had panic attacks all day when using it and felt like I couldn’t concentrate. I even tried only take one pill. Overall I think it’s too strong for me and might be better for others whose bodies adapt better to these.

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. -- Cailee B. ONNIT Customer Service Associate #getonnit