Sunday, November 8, 2026 · Customer reviews of US businesses
The Fair Hearing score
Excellent
53 reviews
www.xbrain.scienceSelect a line to read only those reviews.
Honesty, pricing, process and quality scores appear once 5 customers have rated them.
"X is the world’s ultimate brain performance enhancing supplement. Backed by science, with 17 premium ingredients, all tested in clinical studies that show substantial benefits to cognitive function."
www.xbrain.science (xbrain.science) has 53 customer reviews on The Fair Hearing, with an average rating of 4.9 out of 5.
Showing 48 reviews with 5 stars · Clear filters
I have certainly felt a huge improvement in my productivity and focus since taking X Brain Science. It is my first time using brain supplements and 3 months in - I wish I would have taken it much sooner. I have seen improvements in focus, mental health, reduced anxiety, along with all round more positive moods and self talk. I also started working out each day so I definitely recommend getting active daily along to help you feel the results quickly!
By Patrick
As I was aging, I noticed my brain function somehow slowed down, however, after I discovered this XBrain supplement, my brain functioning gradually went back and I was able to recall things clearly just like when I was in my younger years.
By Douglas B.
They say give 2 weeks for full effects but after 1 week I can already tell a difference. Less brain fog, better spirits during the day, better tolerance with coworkers lol. Will deff continue to be part of my daily wellness stack
By customerzach
One of the best things I’ve ever tried for brain health and productivity. I feel like my efficiency has majorly increased since taking this
By Phillip L.
Would defiantly order again!!! this supplement has helped me focus, concentrate, and relive stress. Thank you XBRAIN!!
By Shane M.
Instant Mental Upgrade! I tried X for the first time and felt it almost immediately. Within 30 minutes, my focus sharpened, the mental fog cleared, and my energy leveled up—without any jitters. Tasks that normally felt like a slog flew by effortlessly. It was like flipping a switch in my brain—ideas flowed, motivation soared, and I actually enjoyed getting things done. Super clean, clear, and powerful. If you’re looking for a legit brain boost, X is the real deal. I’m seriously impressed and already hooked!
By Taku B.
I’ve taken a lot of nootropics over the years, and this is clearly the best. All the stuff you need, in clinically effective doses. Mad props.
By Dillon
I’ve tried multiple brain supplements and X brain has been the best by far. I recommend this to every family member, friend and even strangers that are looking to get into brain supplements
By William H.
