Stress-free focus through perimenopause. Plant-powered. Trusted by 2,000+ medical professionals.

Plant-powered GABA support. No HRT. No caffeine. Why perimenopause affects focus — and the brain-chemistry approach that helps.

📚 The Honest Perimenopause Focus Guide — Plant-Powered, No Hype
FOCUS ELITE — calm focus and positive mood support for women during hormonal shifts

It's Not Just Tiredness — It's Your Brain Chemistry

If you've noticed your focus feeling less sharp, your mood harder to steady, or your stress response more reactive since entering your 40s — you're not imagining it, and it's not weakness.

Perimenopause — the years of hormonal transition before menopause — involves measurable changes to the very neurotransmitter pathways that regulate calm, focus, and mood. Understanding what's happening helps you support it intelligently.

The core issue: Fluctuating oestrogen levels directly affect GABA and serotonin activity — the brain's primary calm and mood regulation systems.

Oestrogen has a well-established relationship with GABA receptors. During perimenopause, as oestrogen levels become erratic, the GABA system — which helps the brain regulate stress responses and maintain calm focus — can become less stable. This isn't a mental health problem. It's a neurochemical one.

Research published in the journal Neuroscience and reviewed by the British Menopause Society shows a clear link between reduced oestrogen and decreased GABA-A receptor sensitivity. The result: the nervous system becomes more reactive, calm focus requires more effort, and the brain fog many women describe is a predictable consequence of this mechanism.

How hormonal shifts during perimenopause affect brain chemistry and focus
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Of perimenopausal women report difficulty concentrating as a leading concern
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Minutes for L-Theanine to support alpha brainwave activity — calm-alert focus
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Key GABA-supporting nutrients in FOCUS ELITE™'s multi-pathway formula
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Ingredients in FOCUS ELITE™ — the most complete formula in the range

Sources: British Menopause Society, Neuroscience research, Nobre et al. 2008, Brainzyme product specification

The good news: GABA pathway support through targeted nutritional ingredients is well-researched, and many women find it makes a meaningful difference to their focus and mood quality during this life stage.

Do Any of These Sound Familiar?

Perimenopause affects focus and mood in recognisable patterns. Tap any that resonate with you.

Signs of perimenopause brain fog, mood changes, and focus difficulty
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of 6 experiences selected

Where Nutritional Support Fits In

Where nutritional support fits alongside lifestyle and medical care during perimenopause

Perimenopause is a medical reality, and for many women HRT, lifestyle changes, and GP-guided care are important parts of managing it. This guide is about something narrower: the nutritional layer that sits alongside medical care — not instead of it.

What nutritional support can do is help the brain’s existing regulation systems work more effectively — specifically the GABA and stress-response pathways that are under more pressure during perimenopause. Think of it as giving your nervous system the raw materials it needs to do its job well during a demanding life stage.

Think of it this way: if your nervous system's natural regulation toolkit is under more pressure during perimenopause, giving it the raw materials it needs to function well is basic neurological self-care. The same way you'd prioritise sleep, movement, and a balanced diet during a demanding life stage — targeted nutritional support is one more tool available to you.

Many women find that calm focus and a steadier emotional baseline — the things they've noticed slipping — respond well to consistent nutritional support. That's what this guide is about.

What Nutrition Actually Can Do

Your brain uses roughly 20% of your body’s energy. It needs a constant supply of specific nutrients to function properly — and when those nutrients are missing or depleted, cognitive performance suffers.

Here’s what the research shows about specific botanicals and nutrients linked to attention, mood, and mental stamina:

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Matcha & Green Tea

L-theanine, found naturally in matcha, has been studied extensively for its effects on attention and calm focus. Research suggests it supports a relaxed but alert mental state — without jitters or crashes.

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Gut-Brain Axis

L. acidophilus probiotic produces GABA directly in the gut, communicating with the brain via the vagus nerve. This gut-brain pathway is a second route for calm focus — and why ELITE includes a probiotic alongside traditional GABA precursors.

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Curcumin & Piperine

Curcumin crosses the blood-brain barrier and protects neurons from oxidative stress. Combined with piperine (black pepper extract) for dramatically improved absorption. Research links it to cognitive function improvements in multiple systematic reviews.

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B Vitamins & Magnesium

Essential for nervous system function and energy metabolism. Studies show that even mild deficiencies in B6, B12, and magnesium can affect concentration, mood, and mental stamina — and many adults are deficient without realising it.

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The full chain, not just one ingredient

The GABA pathway: L-Theanine crosses the blood-brain barrier. B6 converts glutamate to GABA. Magnesium activates GABA receptors. L. Acidophilus produces GABA in the gut. Curcumin protects the neurons. ELITE adds Layer 5 - Cell Protection (Selenium + Vitamin E) and Layer 6 - Energy Metabolism (Riboflavin + Biotin). L-Tyrosine is shared with FOCUS PRO™ to support the dopamine-pathway story alongside GABA.

Evidence: 115 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 115 studies PubMed · DOI · PMC · ScienceDirect
  1. A double‑blind, placebo‑controlled study evaluating the effects of natural stimulant 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–natural stimulant 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
  1. GABA and the blood-brain barrier — is there a transport mechanism?. doi.org/10.1111/j.1749-6632.2009.04824.x
  2. Oral GABA intake: pharmacokinetics and effects on brain GABA levels in humans.. doi.org/10.1016/j.biopsycho.2015.09.009

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

  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.

  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
  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
  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
  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
  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
  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
  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: matched natural stimulant comparison (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. Mechanisms involved in anti-aging effects of guarana in caenorhabditis elegans. The Brazilian Journal of Medical and Biological Research . Available at: doi.org/10.1016/j.pbb.2004.07.014
  9. Guarana provides additional stimulation over caffeine alone in the planarian model. PLOS ONE . Available at: doi.org/10.1371/journal.pone.0123310
  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
  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
  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.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  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

How Nutritional Support Builds Over Time

How nutritional support for focus and calm builds over time during perimenopause

Nutritional support isn't an on/off switch. Some compounds work from the first dose; others build over weeks. Here's what to expect from a consistent GABA-pathway approach during perimenopause.

Think of it like this: You wouldn't abandon a sleep routine after one night, or skip vegetables for a week and expect no effect. Consistent nutritional support is a daily practice — and the payoff builds.

The Nutritional Support Timeline

Day 1 — First dose effects

L-Theanine crosses the blood-brain barrier within approximately 30 minutes, supporting alpha brainwave activity associated with calm alertness. Most women report a quieter, more settled mental state from day one — without sedation or brain fog.

Source: Nobre AC et al. 2008, Asia Pacific J Clin Nutr

Week 1 — Establishing rhythm

Taking your dose at the same time each day establishes a consistent nutritional baseline. The calm-alert window feels more predictable. Many women notice their stress recovery starting to improve — the reactive edge feels slightly smoother.

Based on customer feedback patterns across 6,020+ reviews

Week 3 — The deeper nutrients build in

Magnesium and B6 reach optimal tissue levels. These are the nutrients that directly support GABA receptor sensitivity and the glutamate-to-GABA conversion pathway — both particularly relevant when oestrogen is no longer providing its usual modulating effect.

Source: Magnesium in the Central Nervous System, Univ. of Adelaide Press 2011

Month 1–2 — Stable baseline

By six to eight weeks, most customers have a clear picture. The 365-day returns policy exists precisely because everyone's neurochemistry — and everyone's perimenopause — is different. If it's working, you'll know it. If not, return it.

Based on Brainzyme® 365-day returns data

A Typical Day with FOCUS ELITE™

A typical calm and focused day with FOCUS ELITE during perimenopause

Not a transformation story — just what happens, hour by hour, when your brain has the nutritional building blocks it needs.

8 AM
☕

Morning dose

Two capsules with breakfast. No loading phase, no complicated routine. ELITE's 29-ingredient formula starts absorbing immediately. Easy to build into an existing morning habit.

L-Theanine · B6 · Magnesium · Ginkgo Biloba
9–11 AM
🧠

Calm-alert window

L-Theanine smooths out mental noise without sedation. Tasks feel easier to approach — not numbed, just clearer. Many women notice the stress response feels less reactive during this window.

L-Theanine + Magnesium synergy
1–3 PM
⚡

Sustained afternoon

The effects last roughly 6–8 hours. The mid-afternoon tension dip that perimenopause can amplify feels less sharp. Focus stays accessible without needing to reach for something else.

Steady nervous system support
Evening
🌙

Wears off naturally

No buildup, no withdrawal, no reported next-day grogginess. Plant-based and non-habit-forming by design. Some women find the Magnesium component helps with evening wind-down quality.

Plant-based, non-habit-forming

Day-to-day vs long-term: L-Theanine supports from early doses. Magnesium and B6 build longer-term nervous system resilience over weeks. Effects vary between individuals — that's what the 365-day returns guarantee is for.

What to Look for in a Supplement for This Life Stage

What to look for in a focus and mood supplement during perimenopause

If you're going to add a supplement to your perimenopause toolkit, here's what separates a genuinely useful formula from clever marketing:

0/6 explored
  • ✓
    Multi-pathway formula — not a single-ingredient fix

    GABA activity requires multiple cofactors (B6, Magnesium, L-Theanine) working in concert. Any supplement addressing just one pathway during perimenopause is likely to underdeliver. Look for a formula that covers the full mechanism.

  • ✓
    GABA-pathway ingredients, not vague "women's wellness" blends

    Many supplements aimed at perimenopausal women are underdosed blends of general nutrients. Specific ingredients at research-backed doses for the specific mechanisms affected — L-Theanine, Magnesium, B6, Ginkgo Biloba — is what matters.

  • ✓
    GMP and HACCP certification

    Manufacturing standards that guarantee consistency, purity, and safety. Third-party verified — not self-declared. Particularly important when you're taking something daily for a sustained period. Brainzyme® is made in Scotland to pharma-grade standards.

  • ✓
    Honest claims — no medical promises

    Any supplement that promises to "treat" perimenopause symptoms, "balance hormones", or "replace HRT" is making claims the science doesn't support. Look for brands that describe what nutritional support legitimately does — and stop there.

  • ✓
    A meaningful returns window

    Perimenopause is individual. Its effects on focus, mood, and stress vary enormously between women. Any brand that genuinely believes in its product should offer a long returns window — 365 days, not 14. A short policy is a red flag.

  • ✓
    Plant-powered, allergen-free, vegan-friendly

    Clean formulation matters when you're taking something every day. No synthetic fillers, no artificial additives, no common allergens. Particularly relevant for women managing multiple supplements alongside medical treatment.

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

Real Customer Stories

Hear from people who’ve experienced the difference — honest, unscripted.

  • 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

  • “All the ingredients should help you to concentrate better and think faster.”

    Dr. med. Cordelia Schott · Specialist in orthopaedics & sports medicine, Germany

  • 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

    • Plan Your Path

    Three tools to help you decide if — and which — Brainzyme® is right for this stage of your life.

    What to expect over your first six weeks

    Honest expectations from customer feedback — some people notice more, some less. The 365-day return is there for exactly this reason.

    • DAY 1

      First dose — calm-alert lift

      Most women notice a quieter, calmer focus within an hour of the first two capsules. L-Theanine is active from dose one — no build-up needed.

    • WEEK 1

      Finding what works for you

      You settle into a timing that suits your day (most choose with breakfast). The calm-alert window feels more consistent. The stress-reactive edge that perimenopause can sharpen starts to feel smoother.

    • WEEK 3

      The deeper nutrients build in

      Magnesium and B6 reach optimal tissue levels. These support GABA receptor sensitivity and the conversion pathway that oestrogen usually helps modulate. Many women notice the background nervous system baseline feeling more settled.

    • WEEK 6

      Stable baseline — decision time

      By six weeks you have a clear picture of whether this approach is supporting you. If it is, Subscribe & Save reduces the cost by ~16%. If not, return it within 365 days for a full refund. No questions asked.

    Brainzyme® is a food supplement, not a medicine and not a perimenopause treatment. Individual response varies. Not intended to diagnose, treat, cure or prevent any condition.

    Lifestyle factors that support GABA activity during perimenopause

    Nutritional support works best alongside these evidence-based habits. Together, they help the same nervous system pathways that perimenopause puts under pressure.

    💤
    Sleep quality — protect it actively

    GABA is integral to sleep initiation. Perimenopause can disrupt sleep architecture directly. Prioritising sleep hygiene — consistent wake time, cool and dark room, reduced screen light before bed — supports the same pathways as GABA nutritional support.

    🏃
    Regular movement — especially resistance training

    Exercise increases GABA receptor expression and is particularly well-evidenced for perimenopausal women. Resistance training is especially beneficial for mood, bone density, and metabolic health during this life stage. Even a brisk 20-minute walk measurably supports nervous system regulation.

    🧠
    Mindfulness and breath work

    Slow diaphragmatic breathing and mindfulness practices directly activate the parasympathetic nervous system, increasing GABA activity. Particularly useful when the stress-reactive edge is heightened. Even 5 minutes of slow breathing makes a measurable difference.

    🌮
    Magnesium-rich foods

    Dark leafy greens, nuts, seeds, and legumes. Many women don't reach the recommended daily intake from diet alone — which is one reason it's included in FOCUS ELITE™. The food-first principle applies; supplementation fills the gap.

    🍆
    Blood sugar regulation

    Perimenopausal women often become more sensitive to blood sugar fluctuations — which directly affect mood, focus, and the stress response. Regular meals, reduced refined carbohydrates, and protein at each meal help maintain a stable baseline for cognitive performance.

    ☑
    Reduce chronic stimulant reliance

    Caffeine can amplify the reactivity that perimenopause already increases. This isn't about elimination — it's about not relying on stimulants to compensate for what the nervous system is struggling to maintain on its own. The goal is to support the baseline, not spike over it.

    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 your current stress levels?

    Question 3 of 3

    3. Which best describes what you want from a supplement at this stage?

    Frequently Asked Questions

    No — Brainzyme® is not a perimenopause treatment and is not a substitute for HRT. It is plant-powered brain nutrition that supports focus, calm, and positive mood through GABA-pathway nutrients. That said, many women going through perimenopause find FOCUS ELITE™ genuinely helpful — the L-Theanine, Magnesium, and B6 address the specific cognitive symptoms (brain fog, mental noise, difficulty concentrating) that often accompany this life stage.
    We recommend consulting your GP or qualified healthcare professional before adding any supplement alongside prescription medication or HRT. Brainzyme® FOCUS ELITE uses well-established nutritional ingredients (L-Theanine, Magnesium, B-vitamins, plant extracts), but individual circumstances vary. Your prescribing clinician is best placed to advise on any interactions in your specific case.
    The challenge is the blood-brain barrier. Pure GABA molecules are large and have difficulty crossing this protective barrier in meaningful quantities. Multiple studies (including Boonstra et al. 2015 and Hepsomali et al. 2020) found limited evidence for oral GABA crossing the barrier. The precursor approach — using smaller compounds that the brain converts into GABA activity itself — is better supported by available science. This is why FOCUS ELITE uses L-Theanine, Magnesium, and B6 rather than GABA directly.
    Most customers report noticing a calmer, clearer mental state from day one. L-Theanine crosses the blood-brain barrier within approximately 30 minutes of ingestion and supports alpha brainwave activity from the first dose. Deeper nervous system support from Magnesium and B6 builds over the first few weeks as these nutrients reach optimal tissue levels. For perimenopausal women, most notice the clearest picture by weeks four to six.
    Brainzyme® comes with a 365-day money-back guarantee. If you're not satisfied for any reason, return it within 365 days for a full refund. No questions asked. Every woman's perimenopause is different — the long returns window exists precisely because individual responses to any nutritional approach vary.
    Brainzyme® is made by Better Nutritional Science Ltd, founded in Edinburgh, Scotland in 2016. All products are manufactured in Scotland to GMP and HACCP standards — third-party verified, not self-declared. The company has been operating for over nine years with 6,020+ verified customer reviews and the trust of 2,000+ medical professionals.

    Important: Brainzyme® is a food supplement, not a medicine. It is not intended to diagnose, treat, cure, or prevent any disease or condition. Food supplements should not be used as a substitute for a varied, balanced diet and a healthy lifestyle. If you are pregnant, breastfeeding, taking medication, or under medical supervision, consult a healthcare professional before use.

    © 2026 Better Nutritional Science Ltd. Edinburgh, Scotland. All rights reserved.

    Plant-powered support for hormonal shifts Try FOCUS ELITE

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