Why Most GABA Supplements Don't Work (And What Does)

Brainzyme® Team
Rated 4.74 out of 5 stars 4.74/5 from 6,020+ verified reviews

Stress-free focus and a positive mood, built for people who want focus. Plant-powered, made in Scotland.

If you've tried a pure GABA supplement and felt nothing, here's the part nobody mentions: most of it never reaches your brain. FOCUS ELITE™ takes a different route.

🧠 The Honest GABA Guide — No Hype, Just the Neurochemistry365-Day Money-Back Guarantee
Settled, clear-headed daytime focus with FOCUS ELITE

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Stress-free focus, day to day

  • Own your stress-free focus

    Own your stress-free focus.

  • Steady, not sedated

    Steady, not sedated.

  • A calmer head, a clearer day

    A calmer head, a clearer day.

  • Daytime calm, real focus

    Daytime calm. Real focus.

Why You're Here

If you've searched for a GABA supplement, you probably did everything right: you bought a pure GABA capsule, took it properly, and honestly felt nothing. That's a frustrating place to be: either you decide you're broken, or you decide the product is. Neither is quite true. There's a third explanation that the bottle never mentions, and it's about how GABA actually reaches your brain.

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0min
L-Theanine crosses the blood-brain barrier in roughly
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Active ingredients across 5 functional layers in FOCUS ELITE™
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Average rating from 6,020+ verified reviews
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Medical professionals trust Brainzyme®

Sources: Shyamaladevi et al., Brain Research Bulletin (GABA & the blood-brain barrier); Judge.me verified reviews; Brainzyme® customer base.

So the search makes complete sense, and so does the disappointment. Before you write off GABA entirely, it's worth understanding the one thing that explains why the capsule did nothing.

Does This Feel Familiar?

GABA is the brain's main "slow down" signal. When it's running low, you tend to feel it before you can name it. Recognise any of these?

Quick GABA self-check — wired but worn out
Tap any below that applied to you
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of 6 signs selected

If a few of these landed, you're not broken and you're not imagining it. The next section explains what's actually going on.

Which best describes you?

Sounds like the low-drive type.

You're missing the spark to start more than the calm. FOCUS PRO™ is built for this: it supplies the building blocks along the full dopamine synthesis pathway — nutrients that contribute to normal cognitive function and help reduce tiredness and fatigue.

Explore FOCUS PRO™ →

Sounds like the overwhelmed type.

For you it's not too little drive — it's too much noise in your head. FOCUS ELITE™ is formulated as a daytime formula for calm, stress-free focus: it supports the brain's natural GABA activity so you stay focused without tension — calm without drowsiness.

Explore FOCUS ELITE™ →

Recognise yourself in both?

That's common — low-drive and overwhelm patterns overlap. Answer a few quick questions and we'll point you to the formula that fits you best:

Three questions — we'll suggest a formula

No data collected. The recommendation appears below the third answer.

Question 1 of 3

1. What are you most hoping to support?

Question 2 of 3

2. How would you describe a typical week?

Question 3 of 3

3. How experienced are you with focus supplements?

Where Nutrition Fits In

Where nutrition fits — whole foods and botanicals in a balanced life

Let's be straight about what this is. FOCUS ELITE™ is a plant-powered food supplement, vegan and GMP-certified. It gives your brain the raw materials and cofactors it uses to support its own GABA pathway. That's nutritional support, not a prescription.

If you're managing diagnosed anxiety or another health condition, this sits alongside the care you get from a qualified clinician, not instead of it. Nutrition is one input. Sleep, movement and professional support are the others. We're honest about where this fits, because that's the only way the science means anything.

Most GABA Supplements Contain Just GABA

The five functional layers of FOCUS ELITE

The problem is the route: taken on its own, GABA struggles to cross the blood-brain barrier in meaningful amounts. So FOCUS ELITE™ doesn't supplement GABA directly. It supports the whole pathway your brain already uses to make and use its own: five functional layers across 29 ingredients.

🌿

Layer 1 · Direct GABA activity

L-Theanine. Crosses the blood-brain barrier within about 30 minutes and promotes alpha-wave activity, the brain state linked to relaxed alertness. This is the layer that gives ELITE its daytime, stress-free-focus character rather than a sleepy one.

🧪

Layer 2 · Synthesis cofactors

Vitamin B6 and B1 (thiamine). B6 is the cofactor your GAD enzyme uses to convert glutamate into GABA. B1 supports normal function of the neurons that run on it. The raw material only helps if your brain can actually make the conversion.

🔐

Layer 3 · Receptor enhancement

Magnesium, zinc and piperine. Magnesium supports GABA-A receptor binding while modulating the opposing NMDA system, a dual action. Zinc helps modulate the same receptors. Piperine improves how much of the rest your body absorbs.

🦠

Layer 4 · Gut-brain production

L. Acidophilus live culture. Certain lactobacillus strains produce GABA in the gut and signal upward via the vagus nerve. It's a second, often-ignored route to the same pathway, one most single-ingredient supplements leave out entirely.

🛡

Layer 5 · Neuroprotection

Curcumin and polyphenols. Curcumin crosses the blood-brain barrier and helps protect neurons from oxidative stress, supporting the long-term health of the system you're feeding. The slow, quiet layer that matters over months, not minutes.

FOCUS ELITE with calming whole foods — matcha, green tea, nuts, seeds and leafy greens
🔗

The Whole Pathway — Not Just One Ingredient

Single-ingredient GABA gives the raw material but not the cofactors, receptor support, system modulators or neuroprotection the full pathway needs. Brainzyme® works differently: each formula delivers the full chain your brain uses to make and use GABA naturally, across five functional layers at once.

This isn't about overriding your biology. It's about giving your brain the raw materials and cofactors it uses to support its own GABA pathway, the way your brain actually works.

Evidence: 112 Peer-Reviewed Studies

Tap any ingredient to view the studies behind the claims on this page. All citations are independent peer-reviewed journals.

21 ingredients 112 studies PubMed · DOI · PMC · ScienceDirect

Across the range: Delivered in all three (ORIGINAL 400 mg / PRO 350 mg / ELITE 350 mg as EMT blend).

  1. A double‑blind, placebo‑controlled study evaluating the effects of caffeine and L‑theanine both alone and in combination on cerebral blood flow, cognition and mood (2015) Psychopharmacology . Available at: pubmed.ncbi.nlm.nih.gov/25761837
  2. Effects of L‑theanine on cognitive function in middle‑aged and older adults: a randomized placebo‑controlled study (2021) Journal of Medicinal Food . Available at: pubmed.ncbi.nlm.nih.gov/33751906
  3. Green tea extract enhances parieto‑frontal connectivity during working‑memory processing (2014) Psychopharmacology . Available at: pubmed.ncbi.nlm.nih.gov/24643507
  4. The Effects of Green Tea Extract on Working Memory in Healthy Women (2018) Nutrients . Available at: pubmed.ncbi.nlm.nih.gov/29484360
  5. Green tea effects on cognition, mood and human brain function: a systematic review (2017) Phytomedicine . Available at: pubmed.ncbi.nlm.nih.gov/28899506
  6. Effects of L‑theanine administration on stress‑related symptoms and cognitive functions in healthy adults: a randomized, placebo‑controlled study (2019) Nutrients . Available at: pubmed.ncbi.nlm.nih.gov/31623400
  7. The effects of the green‑tea amino acid L‑theanine on stress/anxiety outcomes: systematic review (2020) Nutrients . Available at: pubmed.ncbi.nlm.nih.gov/31758301
  8. High‑dose L‑theanine–caffeine combination improves ERP P3b and selective attention after sleep loss (2024) Nutrients . Available at: pubmed.ncbi.nlm.nih.gov/40789769
  9. The deployment of intersensory selective attention: a high-density electrical mapping study of the effects of theanine. Clinical Neuropharmacology . Available at: www.ncbi.nlm.nih.gov/pubmed/17272967
  10. L-Theanine and caffeine in combination affect human cognition as evidenced by oscillatory alpha-band activity and attention task performance. The Journal of Nutrition . Available at: www.ncbi.nlm.nih.gov/pubmed/18641209
  11. L-Theanine reduces psychological and physiological stress responses. Biological Psychology . Available at: www.ncbi.nlm.nih.gov/pubmed/16930802
  12. L-Theanine, a natural constituent in tea, and its effect on mental state. Asia Pacific Journal of Clinical Nutrition . Available at: www.ncbi.nlm.nih.gov/pubmed/18296328

Authorised health claim: Magnesium contributes to normal psychological function and reduction of tiredness and fatigue.

Across the range: Delivered by PRO (56 mg) and ELITE (56 mg).

  1. Neuroprotective effects of magnesium: implications for neuroinflammation and cognition (2024) Frontiers in Endocrinology . Available at: pubmed.ncbi.nlm.nih.gov/20152124
  2. Magnesium Citrate Increases Pain Threshold and Reduces TLR4 Concentration in the Brain (2021) Biological Trace Element Research . Available at: pubmed.ncbi.nlm.nih.gov/32989649
  3. Dietary magnesium intake is related to larger brain volumes and lower white matter lesions with notable sex differences (2023) European Journal of Nutrition . Available at: pubmed.ncbi.nlm.nih.gov/36899275
  4. Serum Magnesium and Cognitive Function Among Qatari Adults (2020) Frontiers in Aging Neuroscience . Available at: pubmed.ncbi.nlm.nih.gov/32351381

Authorised health claim: Vitamin B6 contributes to normal psychological function and reduction of tiredness and fatigue.

Across the range: Delivered in all three (2.8 mg per serving).

  1. Vitamin B6 for cognition (2003) Cochrane Database of Systematic Reviews . Available at: pubmed.ncbi.nlm.nih.gov/14584010
  2. Vitamin and mineral supplementation for maintaining cognitive function in cognitively healthy adults in late life (2018) Cochrane Database of Systematic Reviews . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC6353240
  3. Effects of high-dose B-vitamin complex with vitamin C and minerals on mood and cognitive performance during intense mental processing (2010) Human Psychopharmacology: Clinical and Experimental . Available at: pubmed.ncbi.nlm.nih.gov/20454891
  4. B Vitamins and the Brain: Mechanisms, Dose and Efficacy—A Review (2016) Nutrients . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC4772032
  5. Associations between vitamin B6/B9/B12 status and cognitive performance in U.S. older adults (NHANES 2011–2014) (2022) Nutrients . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC8962758

Across the range: Delivered exclusively by ELITE (90 mg, 18 Bn CFU).

  1. Probiotics: The Next Dietary Strategy against Brain Aging (2022) Preventive Nutrition and Food Science (PNF) . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC9007707
  2. Health-Promoting Effects of Lactobacillus acidophilus and Its Technological Applications in Fermented Food Products and Beverages (2024) Fermentation . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC8754107
  3. The gut-brain axis: interactions between enteric microbiota, central and enteric nervous systems. Annals of Gastroenterology . Available at: www.ncbi.nlm.nih.gov/pmc/articles/PMC4367209
  4. Probiotic, Prebiotic, and Brain Development. Nutrients . Available at: doi.org/10.3390/nu9111247
  5. Effect of Probiotics on Central Nervous System Functions in Animals and Humans: A Systematic Review. Journal of Neurogastroenterology and Motility . Available at: doi.org/10.5056/jnm16018

Across the range: Delivered exclusively by ELITE (270 mg turmeric & curcumin).

  1. Curcumin‑rich curry consumption and neurocognitive function in community‑dwelling older adults (4.5‑year cohort) (2022) Nutrients . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC8952785
  2. Curcumin: A Golden Approach to Healthy Aging: A Systematic Review of the Evidence (2024) Nutrients . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC2386914
  3. Short‑term curcumin supplementation increases serum BDNF: meta‑analysis of randomized trials (2019) Journal of Functional Foods . Available at: pubmed.ncbi.nlm.nih.gov/24914461
  4. Curcumin promotes neurogenesis via Wnt/β‑catenin signalling in mouse models (2020) Brain Research . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC4060834
  5. Curcumin improves cognition with increased hippocampal PSD95 and BDNF in mice (2025) Scientific Reports . Available at: pubmed.ncbi.nlm.nih.gov/39774610
  6. Curcumin intervention for cognitive function in different types of people: A systematic review and meta‐analysis. Phototherapy Research . Available at: pubmed.ncbi.nlm.nih.gov/36652384
  7. Piperine, the potential functional food for mood and cognition (2008) Food and Chemical Toxicology . Available at: pubmed.ncbi.nlm.nih.gov/18639606

Across the range: Delivered by PRO (240 mg) and ELITE (240 mg).

  1. Acute, dose-dependent cognitive effects of Ginkgo biloba, Panax ginseng and their combination in healthy young volunteers: differential interactions with cognitive demand (2002) Human Psychopharmacology: Clinical and Experimental . Available at: pubmed.ncbi.nlm.nih.gov/12404705
  2. The dose‑dependent cognitive effects of acute administration of Ginkgo biloba to healthy young volunteers (2000) Psychopharmacology . Available at: pubmed.ncbi.nlm.nih.gov/11026748
  3. Differential cognitive effects of Ginkgo biloba after acute and chronic treatment in healthy young volunteers (2005) Psychopharmacology . Available at: pubmed.ncbi.nlm.nih.gov/23001963
  4. Neuroprotective effects of Ginkgo biloba extract. Cellular and Molecular Life Sciences . Available at: doi.org/10.1007/s00018-003-3080-1
  5. Ginkgo biloba extract review on CNS effects. Ann Clin Psychiatry . Available at: pubmed.ncbi.nlm.nih.gov/12938868
  6. Demonstration of the "anti-stress" activity of an extract of Ginkgo biloba using a discrimination learning task. General Pharmacology: The Vascular System . Available at: doi.org/10.1016/0306-3623(94)90111-2
  7. Chemical analysis of Ginkgo biloba leaves and extracts. Journal of Chromatography A . Available at: doi.org/10.1016/S0021-9673(02)00172-3

Across the range: Delivered exclusively by ELITE (400 mg).

  1. Cognition‑enhancing effect of Panax ginseng in healthy adults: randomized, double‑blind, placebo‑controlled (2019) Journal of Ginseng Research . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC6989239
  2. Effects of Korean red ginseng on human gray‑matter volume and cognition: randomized, double‑blind, placebo‑controlled (2021) Nutritional Neuroscience . Available at: pubmed.ncbi.nlm.nih.gov/33217050
  3. Emerging evidence that ginseng components improve cognitive function: narrative review (2024) Aging and Disease . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC11068985
  4. Effects of Korean red ginseng in individuals exposed to high stress: randomized, double‑blind, placebo‑controlled (2019) Journal of Ginseng Research . Available at: pubmed.ncbi.nlm.nih.gov/31308812
  5. Safety and tolerability of Korean red ginseng in healthy adults: 24‑week randomized trial (2018) Journal of Alternative and Complementary Medicine . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC6190494
  6. Dose dependent changes in cognitive performance and mood following acute administration of Ginseng to healthy young volunteers (2001) Nutritional Neuroscience . Available at: pubmed.ncbi.nlm.nih.gov/11842896
  7. Modulation of cognition and mood following administration of single doses of Ginkgo biloba, ginseng, and a ginkgo/ginseng combination to healthy young adults (2002) Physiology & Behavior . Available at: pubmed.ncbi.nlm.nih.gov/12020739
  8. Effects of Panax ginseng, consumed with and without glucose, on blood glucose levels and cognitive performance during sustained ‘mentally demanding’ tasks. Journal of Psychopharmacology . Available at: doi.org/10.1177%2F0269881106061516

Across the range: Delivered exclusively by ELITE (150 mg).

  1. Improving Cognitive Function with Nutritional Supplements in Aging: A Comprehensive Narrative Review of Clinical Studies Investigating the Effects of Vitamins, Minerals, Antioxidants, and Other Dietary Supplements (2023) Nutrients . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC10746024
  2. L‐carnitine for cognitive enhancement in people without cognitive impairment (2017) Cochrane Database of Systematic reviews . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC6464592
  3. L-Carnitine and acetyl-L-carnitine roles and neuroprotection in developing brain (2018) Neurochemical Research . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC5621476
  4. Chronic acetyl-l-carnitine alters brain energy metabolism and increases noradrenaline and serotonin content in healthy mice (2012) Neurochemistry International . Available at: doi.org/10.1016/j.neuint.2012.04.008

Across the range: Delivered in all three (ORIGINAL 330 mg / PRO 330 mg / ELITE 330 mg).

  1. Improved cognitive performance in human volunteers following administration of guaraná extract: comparison and interaction with Panax ginseng (2004) Pharmacology Biochemistry and Behavior . Available at: pubmed.ncbi.nlm.nih.gov/15582012
  2. A double‑blind, placebo‑controlled, multi‑dose evaluation of the acute behavioural effects of guaraná in humans (2007) Psychopharmacology . Available at: pubmed.ncbi.nlm.nih.gov/16533867
  3. Acute effects of different multivitamin/mineral preparations with guaraná on mood and cognition (2013) Nutrients . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC3798923
  4. Vitamin/mineral complex with guaraná attenuates mental fatigue and improves task performance prior to exercise (2015) Nutrients . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC4555111
  5. Effect of guaraná on cognitive performance: systematic review and meta‑analysis (2023) Nutrients . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC9865053
  6. Cognitive effects of guaraná supplementation with maximal‑intensity cycling (2023) Nutrients . Available at: pubmed.ncbi.nlm.nih.gov/36146946
  7. Effects of acute guaraná ingestion on cognitive performance and vagal modulation in healthy adults (2024) Nutrients . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC11206275
  8. Guarana provides additional stimulation over caffeine alone in the planarian model. PLOS ONE . Available at: doi.org/10.1371/journal.pone.0123310

Across the range: Delivered exclusively by PRO (230 mg). The dopamine-pathway primary active.

  1. The effects of tyrosine on cognitive performance during extended wakefulness (1995) Aviation, Space, and Environmental Medicine . Available at: pubmed.ncbi.nlm.nih.gov/7794222
  2. Tyrosine improves cognitive performance and reduces blood pressure in cadets after one week of combat training (1999) Brain Research Bulletin . Available at: pubmed.ncbi.nlm.nih.gov/10230711
  3. Effect of tyrosine on cognitive function and blood pressure under stress (1994) Psychopharmacology . Available at: pubmed.ncbi.nlm.nih.gov/8293316
  4. Working memory reloaded: tyrosine repletes updating in the N‑back task (2013) Frontiers in Behavioral Neuroscience . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC3863934
  5. Tyrosine promotes cognitive flexibility in task switching (2015) Psychopharmacology . Available at: pubmed.ncbi.nlm.nih.gov/25598314
  6. Dose‑dependent effects of oral tyrosine on plasma tyr and cognition in older adults: a randomized crossover trial (2017) Nutrients . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC5748730
  7. Effects of L‑Tyrosine on working memory and inhibitory control are determined by DRD2 genotype (2016) Cortex . Available at: pubmed.ncbi.nlm.nih.gov/27403851
  8. Neuro‑cognitive effects of acute tyrosine administration on cognitive control in young adults (2018) Nutrients . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC6084775
  9. Baseline‑dependent effect of dopamine's precursor L‑tyrosine on the updating of working memory (2020) Psychopharmacology . Available at: pubmed.ncbi.nlm.nih.gov/32133585
  10. Treatment with tyrosine, a neurotransmitter precursor, reduces environmental stress in humans. Brain Research Bulletin . Available at: doi.org/10.1016/0361-9230(89)90096-8
  11. Tyrosine improves working memory in a multitasking environment. Pharmacology Biochemistry and Behavior . Available at: doi.org/10.1016/S0091-3057(99)00094-5

Across the range: Delivered in all three (ORIGINAL 195 mg / PRO 290 mg / ELITE 195 mg).

  1. Choline Intake Correlates with Cognitive Performance among Elder Adults in the United States (2021) Behavioural Neurology . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC8570899
  2. Citicoline and Memory Function in Healthy Older Adults: A Randomized, Double-Blind, Placebo-Controlled Clinical Trial (2021) The Journal of Nutrition . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC8349115
  3. The relation of dietary choline to cognitive performance and white-matter hyperintensity in the Framingham Offspring Cohort (2011) The American Journal of Clinical Nutrition . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC3252552
  4. Acetylcholine bidirectionally regulates learning and memory (2022) Journal of Neurorestoratology . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC9415189
  5. The Role of Choline in Neurodevelopment (2023) Nutrients . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC10343507
  6. Maternal choline supplementation during the third trimester of pregnancy improves infant information processing speed: a randomized, double-blind, controlled feeding study (2018) The FASEB Journal . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC6988845
  7. Association between Maternal Choline, Fetal Brain Development, and Child Neurocognition: Systematic Review and Meta-Analysis of Human Studies (2022) Advances in Nutrition . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC9776654
  8. Choline: an important nutrient in brain development, liver function and carcinogenesis. Journal of the American College of Nutrition . Available at: doi.org/10.1080/07315724.1992.10718251
  9. Nutritional importance of choline for brain development. Journal of the American College of Nutrition. Available at: doi.org/10.1080/07315724.2004.10719433

Across the range: Delivered by PRO (20 mg) and ELITE (30 mg).

  1. Neuroprotective effects of Lepidium meyenii (Maca) (2010) Annals of the New York Academy of Sciences . Available at: pubmed.ncbi.nlm.nih.gov/20633111
  2. Neuroprotective effects of macamide from maca (Lepidium meyenii) on corticosterone-induced hippocampal impairments through anti-inflammatory, neurotrophic and synaptic protection properties (2021) Food & Function . Available at: pubmed.ncbi.nlm.nih.gov/34606547
  3. Oral Supplementation with Maca Improves Social Memory and Restores Social Recognition Impairments by Augmenting Oxytocinergic Signaling (2023) Nutrients . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC9954495
  4. Preservation of Cognitive Function by Lepidium meyenii (Maca) is Associated with Improvement of Mitochondrial Activity and Upregulation of Autophagy-Related Proteins in Middle-Aged Mouse Cortex (2016) Evidence-Based Complementary and Alternative Medicine . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC5018343

Authorised health claim: Selenium contributes to the protection of cells from oxidative stress.

Across the range: Delivered exclusively by ELITE (13.8 mcg).

  1. Association between selenium intake and cognitive function among older adults in the US: National Health and Nutrition Examination Surveys 2011–2014 (2023) Journal of Nutritional Science . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC10173086
  2. Dietary selenium intake, hypertension and cognitive function among US adults: NHANES 2011–2014 (2024) Scientific Reports . Available at: pubmed.ncbi.nlm.nih.gov/35063231
  3. Associations between multiple trace elements, executive function, and cognitive impairment in older adults (2024) Nutrients . Available at: pubmed.ncbi.nlm.nih.gov/16895884

Authorised health claim: Vitamin E contributes to the protection of cells from oxidative stress.

Across the range: Delivered exclusively by ELITE (6.03 mg alpha-TE).

  1. Vitamin and mineral supplementation for maintaining cognitive function in cognitively healthy adults in late life (2018) Cochrane Database of Systematic Reviews . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC6353240
  2. A randomized trial of vitamins C and E and beta carotene in the prevention of cognitive change in women (2009) Archives of Internal Medicine . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC2752297

Authorised health claim: Riboflavin contributes to normal energy metabolism and reduction of tiredness and fatigue.

Across the range: Delivered exclusively by ELITE (0.7 mg).

  1. Association of vitamin B2 intake with cognitive performance in older adults: a cross-sectional study (2023) Journal of Translational Medicine . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC10691015
  2. Association between vitamin B2 intake and cognitive performance among older adults: a cross-sectional study from NHANES (2024) Scientific Reports . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC11415396
  3. Association between dietary riboflavin intake and cognitive decline in older adults: a cross-sectional analysis (2025) Nutritional Neuroscience . Available at: pubmed.ncbi.nlm.nih.gov/39012764

Authorised health claim: Biotin contributes to normal psychological function.

Across the range: Delivered exclusively by ELITE (25 mcg).

  1. Biotin (comprehensive review of human biology, biomarkers, and status) (2024) Advances in Nutrition . Available at: pubmed.ncbi.nlm.nih.gov/35901964
  2. Indicators of marginal biotin deficiency and repletion in humans: validation of 3-hydroxyisovaleric acid excretion and a leucine challenge (2002) The American Journal of Clinical Nutrition . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC1435357
  3. Trends in daily use of biotin supplements among US adults, 1999–2016 (2020) JAMA . Available at: pubmed.ncbi.nlm.nih.gov/32780133

Authorised health claim: Zinc contributes to normal cognitive function.

Across the range: Delivered in all three (ORIGINAL 3 mg / PRO 3 mg / ELITE 3 mg).

  1. Effects of zinc supplementation on cognitive function in healthy middle-aged and older adults: the ZENITH study (2006) British Journal of Nutrition . Available at: pubmed.ncbi.nlm.nih.gov/17010236
  2. Plasma trace elements and cognitive function in older men and women: The Rancho Bernardo study (2008) The Journal of Nutrition, Health & Aging . Available at: pubmed.ncbi.nlm.nih.gov/18165841
  3. Effects of Zinc Supplementation on Inflammatory and Cognitive Parameters in Middle-Aged Women (2023) Nutrients . Available at: www.ncbi.nlm.nih.gov/sites/entrez/37892471
  4. Zinc intake, status and indices of cognitive function in children and adults: a systematic review (2015) European Journal of Clinical Nutrition . Available at: pubmed.ncbi.nlm.nih.gov/16254577

Authorised health claim: Iodine contributes to normal cognitive function.

Across the range: Delivered in all three (ORIGINAL 100 mcg / PRO 75 mcg / ELITE 75 mcg).

  1. Iodine supplementation improves cognition in mildly iodine-deficient children (2009) American Journal of Clinical Nutrition . Available at: pubmed.ncbi.nlm.nih.gov/19726593
  2. Iodine supplementation improves cognition in iodine-deficient schoolchildren in Albania: a randomized, controlled, double-blind study (2006) American Journal of Clinical Nutrition . Available at: pubmed.ncbi.nlm.nih.gov/16400058
  3. Improved iodine status is associated with improved mental performance of schoolchildren in Benin (2000) American Journal of Clinical Nutrition . Available at: pubmed.ncbi.nlm.nih.gov/11063446
  4. Maternal urinary iodine concentration in pregnancy and children’s cognition: results from a population-based birth cohort in an iodine-sufficient area (2014) BMJ Open . Available at: pubmed.ncbi.nlm.nih.gov/24928597

Authorised health claim: Vitamin B12 contributes to normal psychological function and energy metabolism.

Across the range: Delivered in all three (5 mcg as methylcobalamin).

  1. Effects of vitamin B-12 supplementation on neurologic and cognitive function in older people: a randomized controlled trial (2015) The American Journal of Clinical Nutrition . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC4548176
  2. Results of 2-year vitamin B treatment on cognitive performance: secondary data from a randomized controlled trial (B-PROOF) (2014) Neurology . Available at: pubmed.ncbi.nlm.nih.gov/25391305
  3. Vitamin B12, cognition, and brain MRI measures (2011) Neurology . Available at: pubmed.ncbi.nlm.nih.gov/17991650

Authorised health claim: Vitamin C contributes to normal psychological function and reduction of tiredness and fatigue.

Across the range: Delivered by PRO (16 mg) and ELITE (16 mg).

  1. Vitamin C supplementation promotes mental vitality in healthy young adults: results from a cross-sectional analysis and a randomized, double-blind, placebo-controlled trial (2021) Nutrients . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC8783887
  2. Plasma Vitamin C Concentrations and Cognitive Function: A Cross-Sectional Study (2019) Frontiers in Aging Neuroscience . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC6454201
  3. Vitamin C Status and Cognitive Function: A Systematic Review (2017) Nutrients . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC5622720
  4. The Contribution of Plasma and Brain Vitamin C on Age- and Gender-Related Differences in Cognition (2020) Frontiers in Integrative Neuroscience . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC6353240
  5. Antioxidative and Anti-Inflammatory Activity of Ascorbic Acid (2022) International Journal of Molecular Sciences . Available at: pmc.ncbi.nlm.nih.gov/articles/PMC9598715
  6. Effects of high-dose B-vitamin complex with vitamin C and minerals on mood and cognitive performance during intense mental processing (2010) Human Psychopharmacology: Clinical and Experimental . Available at: pubmed.ncbi.nlm.nih.gov/20454891

What to Actually Expect

L-Theanine and relaxed alertness — calm but awake

We'd rather set honest expectations than oversell a first dose. Precursor support builds: here's the honest picture.

Day-to-day vs long-term: L-Theanine acts fastest; the cofactor, gut-brain and neuroprotective layers build over the first few weeks. That's why we back it with 365-day returns. Give it a fair run.

Day 1 to Month 1 on FOCUS ELITE™

Support that builds — Day 1 to Month 1

Not a transformation story, just what tends to happen as the precursor support builds, step by step.

Day 1
🌿

L-Theanine settles first

Many people notice a settled, less-frantic feeling within the first hour or two — relaxed but alert, not drowsy.

L-Theanine · alpha-wave activity
Week 1
🧪

The cofactor layers join in

With consistent use, B6, magnesium and zinc have time to do their part. Days tend to feel a little less reactive.

B6 · Magnesium · Zinc
Week 3
🦠

The gut-brain route contributes

The live-culture layer needs the longest runway. Around now the overall picture feels steadier rather than spiky.

L. Acidophilus · vagal route
Month 1
🛡

The full multi-layer picture

Support that's built up, not borrowed from a single hit. The neuroprotective layer works quietly in the background.

Curcumin · polyphenols

Because it builds, we back it with 365-day returns. Effects vary from person to person. That's exactly what the guarantee is for.

How to Choose a GABA Supplement That Actually Works

Buyer's guide checklist — choosing honestly

Whether you buy ours or not, here's what separates a GABA supplement that's designed to work from one that just promises an outcome:

  • ✓
    Does it address the blood-brain barrier?

    A formula built only on raw GABA ignores the central problem. Look for precursors and cofactors, not just the end product.

  • ✓
    Does it name its ingredients and amounts?

    "Proprietary blend" hides the dose. You should be able to see exactly what you're taking.

  • ✓
    Does it explain the mechanism?

    A brand that can tell you how it works has nothing to hide. A brand that only promises an outcome usually does.

  • ✓
    Does it avoid inflated claims?

    If it promises to fix everything, be sceptical. Supplements support your biology; they don't override it.

  • ✓
    Can you return it if it's not for you?

    A long, real guarantee is a sign the maker expects it to work. Ours is 365 days.

Why ELITE Is Different — Swipe Through

Six honest reasons the route matters more than the molecule. Swipe →

  • The blood-brain barrier problem nobody mentions

    The problem nobody mentions

    1Taken alone, GABA barely crosses the blood-brain barrier. That's why the capsule did nothing.
  • It wasn't you — the design was wrong, not your biology

    It wasn't you

    2You took it properly and felt nothing. The design was wrong, not your biology.
  • Daytime, not bedtime — stress-free focus, never sedated

    Daytime, not bedtime

    3Stress-free focus, made for your morning. Steady and alert, never sedated.
  • The whole pathway — five functional layers across 29 ingredients

    The whole pathway

    4Most GABA supplements are one ingredient. FOCUS ELITE™ is five functional layers across 29.
  • What to actually expect — honest timelines, not empty promises

    What to actually expect

    5Day 1 settles. Month 1 builds. Honest timelines beat empty promises.
  • Try it on us — 365-day returns and WELCOME10

    Try it on us

    6365-day returns and WELCOME10 for 10% off your first order. Fair odds.

Choose Your Formula

Three plant-powered formulas, each tuned to a different kind of focus support. UK's first natural focus supplement brand, trusted by 2,000+ medical professionals since 2016.

Done waiting for your focus to fix itself? Pick your formula. Real plant-powered support.
GMP & HACCPMade in Scotland to pharma standards
Plant-poweredVegan, no synthetic fillers
From day 1No loading phase
365-day returnsFull refund, no questions
Free UK deliveryOn every order

Join the Brainzyme® Community

Trusted by 120,000+ customers, 2,000+ medical professionals and 6,020+ verified reviewers. Swipe →

  • Brainzyme® customer — Amber
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Real Customer Stories

Honest, unscripted experiences from real customers.

  • Farah

  • Charlotte

  • Haylee

  • Brian

  • Jessica

  • Van Van

  • Pete

  • SJ

  • Emma

  • Amy

  • William

  • Scarlett

  • Caitlin

  • Kieran

  • Bethany

  • Norman

  • Pippa

  • Karl

  • Steph

  • Klaudia

  • Serene

  • Dani

  • Emmie

  • Gabby

  • Janne

  • Sweet Stems

    • Trusted by Medical Professionals

    Over 2,000 medical professionals have personally used and recommended Brainzyme®.

  • “Brainzyme® [FOCUS™] contains matcha, guarana and choline, which are all well known to boost cognitive effects.”

    Dr. Sarah Nicholls · Doctor (BSc BMBS), UK

  • “I chose to partner with Brainzyme® to stay focused when my brain feels foggy or scattered on really full days.”

    Dr. Amelia Kelley, PhD · Author, Therapist, Professor & TEDx Speaker, US

  • Dr. Christian Galli

    “As a cognitive health expert, I have tested a few supplements, but Brainzyme® FOCUS PRO™ stands out as the best cognitive focus supplement.”

    Dr. Christian Galli · Neurologist, Austria

  • Dr. med. Georgia Brunner

    “I definitely experienced increased energy with Brainzyme®. I have patients with low energy and concentration problems, and they prefer FOCUS PRO™ and FOCUS ELITE™.”

    Dr. med. Georgia Brunner · Psychiatry and Psychotherapy, Switzerland

  • Dr. Natalia Bielczyk

    “Despite almost a decade in neuroscience research, this is the first time I’m testing plant-based focus supplements. My mood is very stable, and cognitive flexibility at work seems to have improved. My verdict: on many levels, it works.”

    Dr. Natalia Bielczyk · Neuroscientist & Founder, Netherlands

  • Dr. Michal Nowicki

    “The tangible benefits I've derived from Brainzyme® FOCUS™ are indispensable to my career, and I am genuinely grateful.”

    Dr. Michal Nowicki · MD, MPharm - Cardiologist, Poland

  • “FOCUS ELITE™ is the one that's really made a difference for me. I've noticed more focus, calm energy, and less of that scattered feeling that can take over. And I've been recommending them to my clients.”

    Catherine Amido · Registered Nutritional Therapist, UK

  • Dr. Tracy King

    “I tried all three Brainzyme® FOCUS™ supplements. PRO™ is the one I reach for when I need to get things done, like high-output days, deadlines, or focus sprints, without the crash.”

    Dr. Tracy King · Chartered Clinical Psychologist, UK

  • “I love them. I cannot recommend them highly enough if you are struggling with focus or brain fog.”

    Helen Villiers · Psychotherapist (MBACP), UK

  • “It can really help and it provides a very viable complement to focus and concentration meds.”

    Ludovico Sadic · Neuroscientist (PhD), Spain

  • “Brainzyme® contains a range of nutrients known to help with focus and concentration.”

    Christine Bailey · Nutritional therapist (MSc MBANT CNHC), UK

  • “It's been a few months since I started taking it, and I've truly noticed a difference in my concentration, my stress levels, and my emotional balance. So, I highly recommend it.”

    Elodie Malek · Hypnotherapist, France

  • Dr. Sumera Baloch

    “I wanted to try something to help me with focus and concentration. I found [Brainzyme®] FOCUS™. I tried it, and I have to be honest, it actually helped me, no doubt!”

    Dr. Sumera Baloch · Doctor, UK

  • Dr. Alba Morais

    “I use Brainzyme® very often to help me with work as it helps me to focus, relax and prioritise my tasks.”

    Dr. Alba Morais · Core Trust Doctor: Trauma & Orthopaedics, UK

  • Dr. Saurav Kayastha

    “I have been using this product for a little less than a year for energy, focus and procrastination. This product works like magic. I would highly recommend it.”

    Dr. Saurav Kayastha · Physician, US

  • Daniel Curran

    “I bought the Starter Bundle and have been switching between the 3 types for 2 weeks now. A noticeable difference in my mood, focus and motivation. It takes about an hour to kick in the morning.”

    Daniel Curran · NHS Physiotherapist, UK

  • Victoria Bell

    “Each formula has a different combination of vitamins, minerals, amino acids and other food-based nutrients. These have a synergistic effect on your nervous system and promote calmness, alertness and focus.”

    Victoria Bell · Registered Nutritional Therapist, UK

  • Miriam Liguori

    “I noticed a huge improvement focusing on tasks and I feel more awake and energised on a daily basis.”

    Miriam Liguori · ICU Nurse, Germany

  • Devina Dickson

    “I have been using Brainzyme® focus for over a year now, and find my focus is better and I can concentrate for longer periods.”

    Devina Dickson · Mental Health Nurse, UK

  • Emma Lee

    “It has officially been a life changer. I am pleased with the results so far. I wish I had found Brainzyme® years earlier.”

    Emma Lee · Biomedical Scientist, UK

  • Jonny Hugill

    “I noticed increased focus, improved mood and wellbeing. It has helped me get more done and feel more involved in things.”

    Jonny Hugill · Registered Mental Health Nurse, UK

  • Corinne Z

    “I have been suffering from Long Covid then discovered Brainzyme® and now I have more energy and enjoy everything I do again.”

    Corinne Z · Physiotherapist, Germany

    • Lifestyle factors that support GABA activity, day to day

    Nutrition works best alongside a few evidence-based habits. Each of these supports the same nervous-system pathways FOCUS ELITE™ targets nutritionally.

    ⏱

    A consistent daily rhythm

    A steady routine — regular meals, movement and a settled wind-down — keeps the nervous system on a predictable schedule. Erratic days make daytime calm harder to find; consistency makes it easier.

    🏃

    Regular movement

    Exercise increases GABA receptor expression. Even a 20-minute brisk walk measurably supports nervous-system regulation for hours afterward.

    🧠

    Mindfulness and breath work

    Slow breathing and mindfulness practices activate the parasympathetic nervous system, supporting GABA activity. Even five minutes matters.

    🌮

    A magnesium-rich diet

    Dark leafy greens, nuts, seeds and legumes. Most people don’t get enough from diet alone — which is why magnesium is in FOCUS ELITE™.

    ☑

    Easing chronic stimulant reliance

    Heavy stimulant use shifts the excitation/inhibition balance. This isn’t about elimination — it’s about not relying on them to function, which wears down the baseline over time.

    Frequently Asked Questions

    Yes. FOCUS ELITE™ supports the pathway your brain already uses to make and use its own GABA. That's five functional layers across 29 ingredients: L-Theanine for direct activity, the B-vitamin cofactors for synthesis, magnesium and zinc for receptor support, a gut-brain live culture, and curcumin for neuroprotection. It supplies the raw materials your brain uses every day. Plant-powered, vegan, GMP-certified, made in Scotland.
    Because the design is different. Oral GABA on its own struggles to cross the blood-brain barrier. FOCUS ELITE™ supports the whole pathway instead: the precursors, cofactors, receptor support and gut-brain route your brain uses to make and use GABA itself.
    It's built for daytime. L-Theanine promotes relaxed alertness rather than sedation, so the goal is stress-free focus, not a nap. Most people take it in the morning.
    The L-Theanine layer often settles things within the first hour or two. The deeper layers build over weeks. See the day-by-day timeline above for an honest picture.
    Yes — you can. Brainzyme® contains only plant, vitamin and mineral ingredients (classified as food), so it’s generally safe to take alongside ADHD medication and most prescriptions. We simply recommend leaving at least a 2-hour gap between Brainzyme® and any medication, and starting with one capsule to see how you feel. If you have any specific concerns, check with your GP, pharmacist or a medical professional.
    You have 365 days to return it. The mechanism takes weeks to build, so we give you the room to judge it fairly: a full refund, no questions asked.

    Plan Your Path

    Three quick tools to help you decide if — and which — Brainzyme® is right for you.

    When does stress most get in the way of focus?

    Pick the moment that derails you most — you’ll get a practical way to steady it.

    —
    Your moment

    Select a moment…

    FOCUS ELITE™ is a plant-based food supplement made for daytime focus — one part of a steady routine alongside food, movement and sleep.

    What to expect over your first six weeks

    Honest expectations from customer feedback: some people feel more, some less. The 365-day return is there for exactly that reason.

    • DAY 1

      First dose — calm-alert lift

      Most people notice a quieter, calmer focus within an hour of the first two capsules. L-Theanine is active from dose one, so there’s no build-up phase needed.

    • WEEK 1

      Settling into a rhythm

      You find what time suits you (most choose breakfast). The calm-alert window feels more predictable, and stress recovery starts to feel marginally faster.

    • WEEK 3

      The deeper nutrients build in

      Magnesium and B6 reach optimal levels. These support GABA receptor sensitivity and the conversion pathway directly. Many customers report this is when the background nervous-system calm feels more consistent.

    • WEEK 6

      Stable baseline — decision time

      By six weeks you have a clear picture. If it’s helping, Subscribe & Save drops the cost by roughly 16%. If not, return within 365 days for a full refund, no questions asked.

    Three questions — we’ll suggest a formula

    No data collected. The recommendation appears below the third answer.

    Question 1 of 3

    1. What are you most hoping to support?

    Question 2 of 3

    2. How would you describe a typical week?

    Question 3 of 3

    3. How experienced are you with focus supplements?

    Honest science, no hype. It was the route, not you.

    Rated 4.74 out of 5 stars 4.74/5 from 6,020+ verified reviews

    365-day returns · Free UK delivery · WELCOME10 for 10% off your first order

    Honest science,
    no hype     See the range
    Back to Focus Hub

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