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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)

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Showing 521-530 of 11,986 reviews
Feb 28, 2022
Reviewer name: Michael Barbour Sr
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Pleasantly surprised

I was skeptical, to the point I even had to go back to cancel the subscription because I just wanted to try the product. Definitely surprised at the results and honestly could feel the difference when I ran out. I absolutely felt more focused and even energized when I was taking it and a couple of days after I ran out I regretted canceling that subscription. I have since stocked up and don't plan on running out again anytime soon. I am in no way shape or form paid to promote this product but I would B if I could. 10/10

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Jan 6, 2024
Reviewer name: Hanzpro
2 out of 5 stars
2 out of 5 stars review

Verified Purchase

Felt nausea and upset stomach

Didn’t feel much of a rush of energy or clarity. I did get nausea and stomach upset. I tried to eat with food but the heartburn or nausea feeling was with me most of my day. Maybe I have an intolerance to the ingredients. Not sure. But somewhat disappointed since I was really hoping for some artificial motivation to kick in.

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.

Apr 6, 2015
Reviewer name: Jereme
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

good product, great company

I am on my second bottle of alpha brain (90 count). I do believe it works. I feel more clear. I usually take two in the morning and begin my work, which requires a lot of research and report writing. I feel that I am sharper, and that problem solving is easier. I also have had some pretty lucid dreams now and again. J. C.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Mar 25, 2024
Reviewer name: Angel O
1 out of 5 stars
1 out of 5 stars review

Verified Purchase

Light-headed and Cold Sweats

I took 2 capsules as recommended with lunch (eggs, bacon, and potatoes), and after 30 minutes i would get light headed and start to have cold sweat in my upper lips and forehead. Did not feel good for 4-5 hours. I tried it with one the next day, and this time it didn't cause a cold sweat, but just a mild headache for the next 2 hours. I could not concentrate or remember names during work. Will not be taking them anymore, but the new mood ones ill keep trying since they arent having bad effects.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
reply from 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 20, 2022
Reviewer name: Blryan
2 out of 5 stars
2 out of 5 stars review

Verified Purchase

Alpha brain

I just started the second of three bottles. I’m hopeful but honestly haven’t noticed a difference yet besides being a bit agitated which is definitely not what I wanted. So anyway maybe by the end of the second bottle I will see some improvement. I really hope so. Thanks.

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

We appreciate you taking the time to leave some feedback! Sorry to hear that you haven't seen any results yet. 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!

Dec 7, 2024
Reviewer name: Joseph
1 out of 5 stars
1 out of 5 stars review

Verified Purchase

Alpha Brain Side effects

Unfortunately, I discovered that this gave me side effects. I had high hopes by the 3rd week but one day I wasn’t feeling well so I stopped taking it for a week until I felt better. I thought it was from the colder weather. My side effects were dizziness, nausea, gastrointestinal issues, and finally diarrhea. When I waited the week to get better I recovered and then took one pill this evening only to succumb to the same issue within an hour after ingesting. At first it was dizziness and nausea, then later diarrhea and gastrointestinal issues. I really had high hopes but it’s probably my body that doesn’t agree with it. The packaging, quality of the pills, etc all looked good. Just didn’t work out. Best regards, Joe :.

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

Thank you for sharing your experience with us. We’re sorry to hear that our product didn’t work out for you and that you experienced these side effects. While our formulas are designed with quality and care, we understand that everyone’s body reacts differently, and your health and comfort are always the priority. In regards to your experience, please keep an eye out for an email from our Customer Service team.

Oct 1, 2025
Reviewer name: bunnydollx_6864
5 out of 5 stars
5 out of 5 stars review

True Gut Relief

[This review was collected as part of a promotion.] I was skeptical at first. I've tried a few probiotics over the years, and they mostly felt like I was just spending money on hope. This one, however, was different. The First Few Days: I have to be honest—the first three days weren't miraculous. I felt some extra rumbling and gurgling in my stomach. I think that was just my body getting used to the new ingredients. It wasn't painful, but it was noticeable. It was a sign that things were actually changing, not just passing through. The Real Change (Week One Onward): After that adjustment period, everything went smoothly. The first thing I noticed was how much flatter my stomach was. My usual afternoon bloat, the kind that makes me feel like I have a basketball under my shirt, was greatly reduced. That alone was a win.But the biggest change was regularity. Before, my routine was unpredictable, which created stress in the mornings. With this supplement, I found a steady rhythm. It made me feel lighter and less sluggish overall. The "Extra" Factor: I really believe the combination of bacteria, fungi, and especially the digestive enzymes is what makes this work better than other brands. I could eat things that used to upset my stomach—like certain fibrous veggies—without as much impact. It felt like my entire digestive system was working at its best, instead of struggling through every meal. If I had to sum up my experience in one word, it would be "relief." It's not just that my digestion improved; it's the mental relief of not constantly worrying about gas, bloating, or needing to find the nearest bathroom. It's a real improvement in how I feel every single day.

Review from onnit.com
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Apr 9, 2022
Reviewer name: Tommy Truitt
4 out of 5 stars
4 out of 5 stars review

Verified Purchase

32 male 3+ weeks daily use

Consumers… This product took me 2 or 3 days to begin feeling the effects you’d expect. It was not like lighting strike, but more of a steady good onset of focus and energy. I did not experience the hundreds of adds and people posting online had with this product. However, there was a noticeable boost in energy and focus. But not to the levels at which I believed from all the testimonies I’ve read and watched. Never experienced any nausea or anything like that. I feel like anyone taking a new supplement should expect some minor side affects as the body adjusts and absorbs something new. Eat a small meal with or before taking this. I eat something simple as a banana and maybe a protein/nutrigrain bar and have never had any adverse effects. Happy with the product all around, great job Onnit.

Review from onnit.com
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reply from Customer Experience

Thanks for leaving us some feedback about Alpha Brain! We're glad to hear it's been working for you!

Jul 11, 2023
Reviewer name: Terra
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

I'm impressed!

I was excited to try this product so I started taking it right away. Its a great product. I'm able to adjust it for the various demands of life as well. I take two on a normal twelve hour work day. One on a day im staying home to work around the house and none on some days. It doesn't make me jittery, just smooths the day.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Aug 31, 2022
Reviewer name: dzimm
1 out of 5 stars
1 out of 5 stars review

Verified Purchase

Disappointed

This product did not work as advertised for me. I did not feel any type of increase in energy or focus. It did not help at all with my brain fog or my afternoon crash. It was a huge disappointment because of all of the hype surrounding the product. I was really hoping to get the same effects as shown in the advertisements.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153