X IS RATED 5.0 STARS BY 1,263 VERIFIED BUYERS

Experience The World’s Most Powerful Brain Supplement

Backed by Neuroscience

Supports focus, memory, mental clarity and speed of mental processing.†
100% caffeine-free
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1,263 Verified

5-star reviews

“X doubled my productivity in the first 30 days”

At first, I didn’t notice much. But, within a couple of weeks, my ability to work productively skyrocketed. I’ve finally found the Holy Grail of productivity!

— Steve L.

“The only supplement supported by up-to-date neuroscience”

This is a collection of premium brain-enhancing ingredients that are all backed by science. If you're an Andrew Huberman fan, you'll love this!

— Jay M.

“Finally found a solution to brain fog & memory issues”

In the past few years, my brain hasn’t been operating at the level it used to. I was afraid it would stay like that forever. With X, I have the energy, focus and memory of a 25-year old.

— Melissa P.

“I’ve tried all the others. Nothing compares to X.”

I’m a neuroscience geek, and I work hard to optimize every aspect of my life. I’ve tried literally every brain supplement, and X wins by a long shot.

— Adam M.

"ADHD: Solved!"

There were no jitters or other negative side effects, just a smooth feeling of sustained concentration and focus.

— Howard A.

"I would pay twice the price"

It's expensive, but the benefits to my brain’s performance are worth it.

— Ezra S.

"IQ boost (for real)"

Really loving this supplement - I feel smarter when I take it! So many powerful ingredients. Highly recommend!

— Rachel M.

"The best"

I’ve tried every brain supplement - and this one wins, hands down!

— Peter P.

"Now I’m a morning person"

Never thought id say it! Each morning my mind feels refreshed and ready to go. No more grogginess.

— Jason G.

"Found my purpose, thanks to X"

I feel more motivated and driven than ever before. this product has been life-changing.

— Dillon Y.

Only X Comes With These 2 Guarantees

  • 180-Day Money-Back Guarantee

    Either you love your X or it’s FREE!

    If you’re not thrilled with every aspect of your X experience, simply return the unused portion—or the empty bottle(s)!—anytime within 180 days of purchase for a full refund.

    We make it super-easy!

    To make a return, email hello@xbrain.science. Include your order number. (This applies to Amazon orders too!)

  • Best Brain Supplement Guarantee

    If you like another product more than X, we’ll buy it for you!

    The science supporting every one of our 17 active ingredients is so strong, we guarantee X will outperform any other brain supplement.

    If you get better results from another (non-stimulant) brain supplement on the market in the U.S., we’ll buy you that product!

    Maximum value $75 • Limit 1 claim per household • To make a claim, email hello@xbrain.science.

What customers say about X

"I tried every leading brain supplement for a week...”

DAVID M.
Verified Buyer

"X helps my thoughts flow better and my words come out clearer."

SALUSTIANO B.
Verified Buyer

"My boss noticed the improvement in my focus."

DEVIN B.
Verified Buyer

"Nothing helps my ADHD more than this."

JACK B.
Verified Buyer

"Suddenly my brain is working like it did 25 years ago."

DR. BOB Z.
Verified Buyer

"My energy and alertness are at 100% with X."

HASSAN M.
Verified Buyer

"I’m less stressed and more energized with X."

SADIRM C.
Verified Buyer

"X has been a game changer for my mental clarity."

SANA K.
Verified Buyer

"I close more deals because of X.”

OMAR M.
Verified Buyer

"X keeps me sharp and focused all day."

PHILLIP W.
Verified Buyer

"The level of calm, focused energy I get is incredible."

ADAM M.
Verified Buyer

"X enables me to perform at my best, every day."

DANNY H.
Verified Buyer

STEP UP TO A NEW LEVEL OF BRAIN PERFORMANCE

MORE POWERFUL FOCUS, MEMORY AND COGNITION
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  • • Promotes focus†
  • • Supports memory†
  • • Enhances productivity†
  • • Increases time in flow state†
  • • Improves cognition (mental processing)†
  • • Elevates brain energy†
  • • Promotes calm†
  • • Caffeine Free
  • • Gluten Free
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Hello, Flow State

Get in the zone for deep work

Hello, Flow State

Get in the zone for deep work

X starts to work within an hour.

First, you will notice an increase in mental clarity. A feeling of your brain being “switched on”, lifting you out of brain fog into an alert but calm state.

As you take X regularly, you will find that you slip effortlessly into a “flow state” — focusing intently on the work at hand for long periods. More powerful memory. Improved mental processing.

THE BIG FOUR BRAIN BENEFITS

As shown in clinical studies of the ingredients in X.

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Ingredients clinically proven to improve brain function

Even if you’re already a high performer, you can get an edge by giving your brain what it needs to thrive.

No other supplement contains this unique combination of ingredients.

See the full list.

Brand-name ingredients set X apart

Brand-Name Ingredients
Price Per Serving (Without Discount)
9
$4.47
Qualia Mind®
2
$4.47
Alpha Brain® Black Label
1
$4.47
Neuriva®
1
$4.47
Prevagen®
0
$4.47
Alpha Brain®
0
$4.47
Dynamic Brain™
0
$4.47
Neuro Health®
0
$4.47

CLICK ON ANY OF THE ABOVE LOGOS TO SEE THE RESEARCH-SUPPORTED BENEFITS OF THAT INGREDIENT.

Cognizin® C-coline: Supporting Cognitive Health and Mental Energy

Cognizin® is a patented form of C-coline that stands out for its purity, efficacy, and safety. Extensively researched and backed by multiple clinical studies, Cognizin® is a proven ingredient for enhancing cognitive health, mental energy, and overall brain function.

Key Benefits from Published Studies:

Enhanced Cognitive Function: Clinical trials have shown that Cognizin® significantly improves cognitive abilities such as memory, attention, and processing speed. Participants using Cognizin® demonstrated better recall and mental clarity, highlighting its effectiveness in supporting brain health.

Increased Mental Energy: Research indicates that Cognizin® helps boost energy production in brain cells by enhancing mitochondrial function. This leads to greater mental stamina, reduced cognitive fatigue, and improved overall mental performance.

Neuroprotection: Cognizin® has powerful neuroprotective properties, helping to protect brain cells from oxidative stress and other damaging factors. This is crucial for maintaining long-term brain health and reducing the risk of neurodegenerative conditions.

Improved Brain Metabolism: Cognizin® supports the synthesis of acetylcholine, a neurotransmitter vital for learning and memory. It also aids in maintaining the structural integrity of brain cell membranes, further promoting efficient brain function.

Cognizin® is superior to other forms of choline due to its high bioavailability and purity. It is designed to deliver optimal levels of choline to the brain, ensuring maximum efficacy and safety.

Cognizin® is manufactured by Kyowa Hakko Bio Co., Ltd., a global leader in the development of innovative and effective health ingredients, based in Tokyo, Japan.

AlphaSize® Alpha-GPC: Enhancing Cognitive Performance and Physical Strength

AlphaSize® Alpha-GPC is a highly bioavailable form of Alpha-GPC, recognized for its superior ability to cross the blood-brain barrier, ensuring maximum delivery to brain cells. This advanced choline compound has been extensively studied, demonstrating significant benefits in cognitive function, focus, and physical performance.

Key Benefits from Published Studies:

Improved Cognitive Function: Clinical studies have shown that AlphaSize® Alpha-GPC significantly enhances cognitive performance, including memory, learning, and attention. Participants taking Alpha-GPC demonstrated better recall and processing speed, highlighting its efficacy in supporting brain health.

Enhanced Focus and Attention: Research indicates that AlphaSize® Alpha-GPC can improve focus and concentration, making it easier to stay on task and process complex information efficiently.

Increased Physical Performance: Alpha-GPC is not just beneficial for cognitive function. Studies have shown that it enhances physical performance by increasing power output, strength, and endurance, making it a popular supplement among athletes and fitness enthusiasts.

Neuroprotection: AlphaSize® Alpha-GPC provides neuroprotective benefits by supporting the health and integrity of brain cells. This is particularly important for long-term brain health and reducing the risk of cognitive decline.

AlphaSize® Alpha-GPC's superior bioavailability and efficacy make it a preferred choice over other forms of choline supplements. It ensures that the brain receives an optimal amount of choline, which is critical for producing acetylcholine, a neurotransmitter essential for learning and memory.

AlphaSize® Alpha-GPC is manufactured by Chemi Nutra, based in White Bear Lake, Minnesota, USA. This ensures that you are getting a high-quality product from a reputable source, committed to delivering top-notch nutritional ingredients.

PureQQ® PQQ: Boosting Cellular Energy and Cognitive Function

PureQQ® is a highly purified form of Pyrroloquinoline Quinone (PQQ), a powerful nutrient known for its role in enhancing cellular energy and supporting brain health. Extensive clinical and university research has validated the significant benefits of PureQQ® in boosting mental and physical performance.

Key Benefits from Published Studies:

Increased Cellular Energy: Clinical studies have shown that PureQQ® enhances mitochondrial biogenesis, leading to increased cellular energy production. This results in greater vitality, reduced fatigue, and improved overall energy levels.

Enhanced Cognitive Function: Research indicates that PureQQ® improves cognitive performance, including memory, attention, and mental clarity. Participants using PureQQ® demonstrated better recall and information processing speed.

Neuroprotection: PureQQ® has strong antioxidant properties, protecting brain cells from oxidative stress and other potential damage. This helps promote long-term brain health and reduces the risk of neurodegenerative diseases.

Improved Mood and Mental Clarity: Studies have shown that PureQQ® can help improve mood and reduce symptoms of stress and anxiety, supporting overall mental well-being and clarity.

PureQQ® is superior to other forms of PQQ due to its high purity and bioavailability. It ensures that the body receives the optimal amount of PQQ, maximizing its efficacy and safety.

PureQQ® is manufactured by Mitsubishi Gas Chemical Company, Inc., based in Tokyo, Japan. The company is renowned for its commitment to quality and innovation in the development of health ingredients.

CognatiQ® (Decaffeinated) Coffee Fruit Extract: Enhancing Memory and Learning

CognatiQ® is a patented (decaffeinated) coffee fruit extract known for its exceptional benefits in supporting brain health, memory, and learning. Extensive clinical research backs its efficacy in enhancing cognitive function and protecting brain cells.

Key Benefits from Published Studies:

Enhanced Memory: Clinical trials have demonstrated that CognatiQ® significantly improves memory retention and recall. Participants using CognatiQ® showed marked improvements in their ability to remember and process information.

Improved Learning: Research indicates that CognatiQ® supports cognitive processing, making learning more efficient and effective.

Neuroprotection: CognatiQ® offers strong antioxidant properties, protecting brain cells from oxidative stress and promoting long-term brain health.

Increased BDNF Levels: Studies have shown that CognatiQ® can increase levels of brain-derived neurotrophic factor (BDNF), a protein essential for brain health, neurogenesis, and cognitive function.

CognatiQ® stands out for its high concentration of bioactive compounds derived from coffee fruit, ensuring superior quality and efficacy in supporting cognitive health.

CognatiQ® Coffee Fruit Extract is manufactured by FutureCeuticals, Inc., based in Momence, Illinois, USA. The company specializes in producing high-quality, research-backed health ingredients.

SerinAid® Phosphatidylserine: Supporting Memory and Cognitive Function

SerinAid® is a premium form of phosphatidylserine (PS), a phospholipid crucial for brain health. Extensively researched, SerinAid® is known for its ability to support memory, cognitive function, and overall brain performance.

Key Benefits from Published Studies:

Improved Memory: Clinical studies have shown that SerinAid® significantly enhances memory retention and recall. Participants using SerinAid® demonstrated improved ability to remember and process information.

Enhanced Cognitive Function: Research indicates that SerinAid® supports various aspects of cognitive performance, including learning, attention, and mental clarity.

Neuroprotection: SerinAid® provides neuroprotective benefits by maintaining cell membrane integrity and supporting brain cell health. This helps in reducing the risk of cognitive decline.

Stress Reduction: Studies have shown that SerinAid® can help reduce cortisol levels, aiding in stress management and promoting emotional balance.

SerinAid® is superior to other forms of phosphatidylserine due to its high purity and efficacy, ensuring consistent and reliable results.

SerinAid® Phosphatidylserine is manufactured by Chemi Nutra, based in White Bear Lake, Minnesota, USA. The company is known for its commitment to quality and innovation in the field of nutritional ingredients.

KSM-66® Ashwagandha: Supporting Cognition, Mood, and Stress Relief

KSM-66® Ashwagandha is a full-spectrum extract of Ashwagandha, known for its adaptogenic properties and cognitive benefits. This highly researched ingredient is renowned for its ability to support mental clarity, improve mood, and reduce stress.

Key Benefits from Published Studies:

Enhanced Cognitive Function: Clinical trials have shown that KSM-66® Ashwagandha improves cognitive abilities such as memory, attention, and information processing speed. Participants using KSM-66® exhibited better mental clarity and focus.

Improved Mood: Research indicates that KSM-66® Ashwagandha can help improve mood and reduce symptoms of anxiety and depression. This is particularly beneficial for maintaining emotional balance and mental well-being.

Stress Reduction: KSM-66® Ashwagandha is well-known for its stress-reducing properties. Studies have demonstrated its effectiveness in lowering cortisol levels, the stress hormone, helping to promote a sense of calm and relaxation.

Neuroprotection: KSM-66® Ashwagandha provides neuroprotective benefits, supporting brain health and reducing the risk of cognitive decline. Its antioxidant properties help protect brain cells from oxidative stress.

KSM-66® Ashwagandha is superior to other forms of Ashwagandha due to its full-spectrum extraction process, which retains the highest concentration of bioactive compounds. This ensures maximum efficacy and potency, making KSM-66® a trusted choice for cognitive health and stress management.

KSM-66® Ashwagandha is manufactured by Ixoreal Biomed Inc., based in Los Angeles, California, USA. The company is dedicated to producing high-quality, clinically researched botanical extracts.

Bacognize® Bacopa Monnieri: Enhancing Memory and Cognitive Function

Bacognize® is a standardized extract of Bacopa Monnieri, an herb traditionally used in Ayurvedic medicine for enhancing brain function. Extensive research and clinical trials have confirmed Bacognize®'s effectiveness in improving cognitive performance, memory, and overall brain health.

Key Benefits from Published Studies:

Improved Memory and Learning: Clinical studies have demonstrated that Bacognize® significantly enhances memory retention and recall. Participants using Bacognize® showed marked improvements in learning abilities and information processing.

Enhanced Cognitive Function: Research indicates that Bacognize® can improve overall cognitive performance, including attention, concentration, and mental clarity. This makes it a valuable supplement for individuals looking to boost their cognitive abilities.

Neuroprotection: Bacognize® has strong antioxidant properties, protecting brain cells from oxidative stress and other potential damage. This helps promote long-term brain health and reduces the risk of cognitive decline.

Stress Reduction: Studies have shown that Bacognize® can help reduce stress and anxiety levels, promoting a sense of calm and well-being. This is particularly beneficial for maintaining cognitive performance under stress.

Bacognize® stands out for its high concentration of bioactive compounds, ensuring maximum efficacy and safety. Its standardized formulation guarantees consistent quality and potency, making it a reliable choice for cognitive health support.

Bacognize® Bacopa Monnieri is manufactured by Verdure Sciences, a company dedicated to producing high-quality botanical extracts, based in Noblesville, Indiana, USA.

Rhodiolife® Rhodiola Rosea: Enhancing Energy and Reducing Stress

Rhodiolife® is a standardized extract of Rhodiola Rosea, an adaptogenic herb known for its ability to enhance energy and reduce stress. Clinical studies have demonstrated the effectiveness of Rhodiolife® in supporting mental and physical performance.

Key Benefits from Published Studies:

Increased Energy: Clinical trials have shown that Rhodiolife® significantly boosts energy levels, enhancing both physical and mental stamina. Participants reported reduced fatigue and improved endurance.

Stress Reduction: Research indicates that Rhodiolife® helps the body adapt to stress, reducing cortisol levels and promoting a sense of calm. This is particularly beneficial for maintaining mental clarity and emotional balance under stress.

Enhanced Cognitive Function: Rhodiolife® supports cognitive performance, including focus, attention, and mental clarity. Studies have shown that it can improve cognitive processing and reduce mental fatigue.

Mood Support: Rhodiolife® has been shown to improve mood and reduce symptoms of anxiety and depression, supporting overall mental well-being.

Rhodiolife® stands out for its high concentration of bioactive compounds and its standardized formulation, ensuring consistent quality and potency. This makes it a reliable choice for enhancing energy and reducing stress.

Rhodiolife® Rhodiola Rosea is manufactured by Nektium Pharma, based in Las Palmas, Spain. The company is dedicated to producing high-quality botanical extracts with proven efficacy.

Suntheanine® L-Theanine: Supporting

Mood and Stress Relief

Suntheanine® is a patented form of L-Theanine, an amino acid known for its calming effects and ability to support mood and stress relief. Clinical studies have highlighted the benefits of Suntheanine® in promoting relaxation and mental clarity.

Key Benefits from Published Studies:

Improved Mood: Clinical trials have shown that Suntheanine® helps maintain a positive mood and reduce symptoms of anxiety. Participants reported feeling more relaxed and emotionally balanced.

Enhanced Relaxation: Research indicates that Suntheanine® promotes relaxation without causing drowsiness, making it easier to stay calm and focused. This is particularly beneficial for improving mental clarity and cognitive performance under stress.

Cognitive Support: Suntheanine® helps maintain cognitive performance, including focus and attention, even under stressful conditions. Studies have shown that it can enhance mental clarity and reduce cognitive fatigue.

Sleep Quality: Suntheanine® has been shown to improve sleep quality, helping individuals achieve more restful and restorative sleep. This contributes to better overall health and well-being.

Suntheanine® is superior to other forms of L-Theanine due to its patented production process, which ensures high purity and efficacy. This makes Suntheanine® a trusted choice for supporting mood and stress relief.

Suntheanine® is manufactured by Taiyo International, Inc., based in Minneapolis, Minnesota, USA. The company is committed to producing high-quality, scientifically-backed health ingredients.

FREQUENTLY ASKED QUESTIONS

Quality and Standards

X is made in a state-of-the-art FDA-registered facility in California, which has Organic Certification, Kosher Certification, and is certified for Current Good Manufacturing Practices (CGMP) by NSF & UL.

Every batch of X is third-party tested for purity and potency.

Improve your cognitive performance with naturally sourced ingredients that support your brain.

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180-Day Money-Back Guarantee

Your satisfaction is our top priority

We will do what it takes to ensure that you are completely satisfied.

If you don’t love X, simply send back the unused portion for a full refund.

You can even use it for a full month and then send back the two empty bottles if you’re not thrilled with the results.

Customer Reviews

Customer Reviews

Based on 1500 reviews
84%
(1259)
7%
(107)
2%
(36)
3%
(40)
4%
(58)
87.9
D
Danny H.
Amazing product!!

Use this every day, I’m a huge fan!!

F
Fernanda
effective !!

my friend from jiu jitsu recommended me these suplements he is sharp with 70s im really loved it !

J
J.H.
Best nootropic on the market

ABSOLUTE GAME CHANGER FORUMLA!! Love this product and the intese focus i get through out the day.

E
Eric
Groundbreaking Memory Enhancement

I took X last year for a month and a half and it had lasting effects for me long after I stopped taking this supplement. It's true, the first two weeks you are just building it up in your system. But man does it hit you when you reach the optimum level, where the magic happens. I was able to remember things form my childhood that I haven't thought of at all in my adult and even teenage life. Concepts I knew as a child, very early memories like even dreams and some trauma I had locked away. Trauma is fine because it comes with remembering other things. And remembering such things helps you understand yourself better. I have never had a brain supplement affect me in such a way. It really stands what they say about their supplement: It really is the most powerful I've taken, out of all the others I've tried. For best results, I recommend taking for a month and a half. See what happens. It's a night and day difference.

M
Milad R.

Great experience

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Neuroscience has chosen these 17 ingredients

Ingredient
MG/Serving
(Supported by published research)†
1
Alpha-GPC
BRAND: AlphaSize®
300mg
Supports memory, focus . Precursor to acetylcholine, which is essential to focused attention and neuroplasticity.†
2
Choline
BRAND: Cognizin®
250mg
Supports elevated cognitive function, especially improved focus, attention and brain energy. Promotes brain health, neuroplasticity.†
3
Bacopa Monnieri
BRAND: Bacognize®
300mg
Supports focus, attention, brain energy, motor speed and memory. Promotes brain health and neuroplasticity.†
4
Ashwagandha
BRAND: KSM-66®
300mg
Supports cognitive function and memory, reduced stress and anxiety, and physical endurance, strength and muscle size.†
5
Phosphatidylserine
BRAND: SerinAid®
100mg
Supports overall brain function, enhanced mood, memory, concentration as well as physical performance and recovery.†
6
Rhodiola Rosea
BRAND: Rhodiolife®
250mg
Supports focus, memory, mood, anxiety relief, reduced fatigue, and improved energy, stamina and performance.†
7
L-Theanine
BRAND: Suntheanine®
200mg
Supports relaxed alertness, focus and concentration. Helps promote a calm but energized state conducive to focused work.†
8
Coffee fruit extract (decaf)
BRAND: CognatiQ®
200mg
Stimulates production of BDNF (Brain-Derived Neurotrophic Factor), which promotes growth of new brain cells.†
9
PQQ
BRAND: PureQQ®
50mg
Supports elevated cognitive function and improved short-term memory. Improves cellular energy (ATP) production.†
10
L-Levodopa (Mucuna Pruriens extract)
50mg
Increases baseline level of dopamine in the brain and body, supporting motivation, drive, energy and focus.†
11
L-Tyrosine
250mg
Increases norepinephrine and dopamine, supporting motivation, drive, energy and focus.†
12
Ginkgo Biloba
50mg
Supports overall brain function and wellbeing. Helps promote positive mood and reduced anxiety.†
13
Alanyl L-Glutamine
500mg
Supports overall brain function, memory and cognition. Alanyl L-Glutamine is superior to free form L-Glutamine.†
14
Huperzia Serrata Extract (1% Huperzine-A)
5mg
Increases dopamine and acetylcholine transmission, which promotes focus and neuroplasticity.†
15
Uridine
160mg
Supports improved memory through increased growth of synapses. Boosts dopamine, supporting motivation and drive.†
16
Theobromine
200mg
The primary active ingredient in dark chocolate. Improves cognitive function and boosts focus.†
17
L-Phenylalanine
500mg
Increases norepinephrine and dopamine, supporting motivation, drive, energy and focus.†

OTHER ACTIVE INGREDIENTS:

Vitamin B6, 10mg • Vitamin B12 (Methylcobalamin), 500mcg — critical to brain function • Black pepper extract, BRAND: Bioperine®, 5mg — promotes absorption of ingredients

INACTIVE INGREDIENTS:

Hypromellose, Microcrystalline Cellulose, Calcium Carbonate, Bamboo Extract, Nuflow®, Leucine
Try X Now, Risk-Free

180-Day Money-Back Guarantee

AlphaSize® and SerinAid® are registered trademarks of Chemi Nutra, LLC in the USA and other jurisdictions. Cognizin® is a registered trademark of Kyowa Hakko Bio Co., Ltd. Bacognize® is a registered trademark of Verdure Sciences, Inc. KSM-66® is a registered trademark of Ixoreal Biomed, Inc. PureQQ® is a trademark of Nascent Health Sciences. CognatiQ® is a trademark of VDF FutureCeuticals, Inc. Rhodiolife® is a registered trademark of Nektium Pharma, S.L. Suntheanine® is a registered trademark of Taiyo International, Inc. BioPerine® is a registered trademark of Sabinsa Corporation.

© 2024 X

† These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.