Product Image

Focus

Huge Nutrition
4.7
★ ★ ★ ★ ★
(56 ratings)
Theanine 150 mg
Tyrosine 2000 mg
Rhodiola
Caffeine 200 mg
Deanol 750 mg
Alpha-GPC 600 mg
Hericium mushroom 800 mg
Product Image
Score61
A very strong focus stack with substantial actives, but unclear standardization and an aggressive stimulant burden demand caution.
How scoring works
Quantity:240 Capsule(s) • (30 servings)
Goals:
Productivity Boost
Cognitive Support
Brain Health
Energy
Weight Loss
Mental Focus
Fitness
Mood Support
Metabolism Boost

Score 61

A very strong focus stack with substantial actives, but unclear standardization and an aggressive stimulant burden demand caution.
How scoring works
$47.96($1.59 per serving)
Walmart
$ 47.96
Report prices

Analysis

Tyrosine, alpha-GPC, rhodiola, and theanine cover several relevant focus pathways at substantial listed amounts. Lion's mane and DMAE add breadth, though their forms and quality details are limited.

Caffeine anhydrous and di-caffeine malate create a strong stimulant base before counting any additional botanical contribution. N-phenethyl dimethylamine adds further stimulation, making the formula poorly suited to caffeine-sensitive users.

The ginkgo extract lacks active-marker percentages, and the huperzine entry does not clearly state actual huperzine-A yield. The eight-capsule serving is expensive and difficult to adjust ingredient by ingredient.

Who is it for
  • Experienced stimulant users seeking intense focus
  • Adults who already know their caffeine tolerance
  • People avoiding late-day use
Best for
  • High-demand focus periods
  • Daytime productivity
  • Experienced pre-work routines

Pros

  • Substantial tyrosine and alpha-GPC amounts
  • Includes theanine alongside stimulants
  • Broad focus-oriented ingredient coverage

Cons

  • Very high combined stimulant load
  • Ginkgo and huperzine standardization is unclear
  • Eight-capsule serving with premium cost

Warnings

  • The combined caffeine sources may cause jitteriness, palpitations, anxiety, or sleep disruption
  • Do not combine with other stimulants or take near bedtime
  • Huperzine-containing products can cause nausea, vivid dreams, or slow heart rate and should not be stacked with other cholinergic agents

Nutrient quality

68 High impact

Substantial doses cover several focus pathways. Extreme huperzine A and stimulant exposure create an unacceptable safety profile.

.

Ingredient transparency

73 High impact

Most active names and total amounts are visible. Repeated source entries and missing non-active ingredients reduce clarity.

.

Customer satisfaction

60 Moderate impact

The supplied average rating is very strong. No specific review comments were supplied, so repeated negative experiences cannot be assessed.

.

Value for money

38 Lower impact

The formula supplies substantial amounts of many nootropics. Severe dose and stimulant concerns destroy practical value.

.
Report analysis

Goals

Productivity Boost
Productivity Boost
Impact
Highest effect
A- Goal FitB+ Strength of SupportA CoverageB+ Formula Quality
Huperzine · 20 mgAlpha-GPC · 600 mgTheanine · 150 mgCaffeine · 150 mg

Tyrosine, Alpha-GPC, rhodiola, caffeine, theanine, ginkgo, and lion’s mane target focus, alertness, neurotransmitter support, and stress-related fatigue. Several actives reach meaningful amounts, making the formula unusually deep across productivity pathways.

Missing botanical standardization reduces confidence in rhodiola, ginkgo, and lion’s mane potency. The combined caffeine load is high and may cause jitters or sleep disruption, especially with the full eight-capsule serving.

Study evidence
Alpha-GPC Supportive 2 studies
Caffeine Supportive 108 studies
Ginkgo Supportive 20 studies
Ginkgo Supportive 12 studies
Hericium mushroom Disputed 2 studies
Rhodiola Supportive 7 studies
Theanine Supportive 5 studies
Cognitive Support
Cognitive Support
Impact
Highest effect
A Goal FitB+ Strength of SupportA CoverageC Formula Quality
Huperzine · 20 mgAlpha-GPC · 600 mgTheanine · 150 mgHericium mushroom · 800 mg

A large set of well-dosed cognitive actives covers neurotransmitters, circulation, stress fatigue, and cholinergic signaling. Missing extract standards and active-yield details keep some doses from being compared cleanly with clinical forms.

The stack is potent but stimulant-heavy, with 350 mg caffeine from two listed sources before other stimulating compounds are considered. Caffeine may cause jitteriness or sleep disruption, and ginkgo may increase bleeding risk with anticoagulant or antiplatelet medicines.

Study evidence
Alpha-GPC Supportive 15 studies
Ginkgo Supportive 87 studies
Hericium mushroom Supportive 6 studies
Huperzine Supportive 22 studies
Rhodiola Supportive 7 studies
Theanine Supportive 25 studies
Brain Health
Brain Health
Impact
Highest effect
A Goal FitB Strength of SupportA- CoverageC+ Formula Quality
Huperzine · 20 mgAlpha-GPC · 600 mg

Tyrosine, Alpha-GPC, rhodiola, ginkgo, lion’s mane, theanine, caffeine, and Huperzine A create an extensive acute-focus stack. The formula covers many cognitive mechanisms but also carries a heavy stimulant and capsule burden.

Several actives have substantial amounts, while lion’s mane is unextracted and multiple botanicals lack marker percentages. The combined caffeine sources may cause jitteriness or sleep disruption, and the Huperzine A label amount raises a serious dosing concern.

Study evidence
Alpha-GPC Supportive 12 studies
Ginkgo Supportive 90 studies
Hericium mushroom Supportive 10 studies
Huperzine Supportive 17 studies
Rhodiola Supportive 8 studies
Theanine Supportive 17 studies
Tyrosine Supportive 7 studies
Energy
Energy
Impact
Highest effect
A- Goal FitB+ Strength of SupportB+ CoverageB- Formula Quality
Caffeine · 150 mg

Theanine, Caffeine, and Rhodiola provide relevant support for energy. Theanine, Caffeine, and Rhodiola contribute to physiological processes relevant to energy.

Clearly identified L-theanine reaches a well-aligned amount for calm focus within a broad cognitive stack. Two caffeine sources create a high combined stimulant load, which may still cause jitters or sleep disruption in sensitive users.

Study evidence
Caffeine Supportive 68 studies
Rhodiola Supportive 18 studies
Theanine Not classified

No linked studies yet.

Weight Loss
Weight Loss
Impact
High effect
B Goal FitB Strength of SupportA- CoverageC+ Formula Quality
Caffeine · 150 mg

Caffeine may modestly support thermogenesis, while a substantial rhodiola amount adds stress-resilience support during a calorie deficit. Theanine and tyrosine provide related focus support.

The formula is built more for cognition than weight management and includes a high combined stimulant burden. People with high blood pressure, heart-rhythm concerns, anxiety, or stimulant sensitivity should avoid the full eight-capsule serving.

Study evidence
Caffeine Disputed 14 studies
Rhodiola Not classified

No linked studies yet.

Theanine Not classified

No linked studies yet.

Mental Focus
Mental Focus
Impact
High effect
A- Goal FitB- Strength of SupportA- CoverageC Formula Quality
Alpha-GPC · 600 mgTheanine · 150 mgCaffeine · 150 mgHuperzine · 20 mg

Tyrosine, Alpha-GPC, rhodiola, ginkgo, theanine, caffeine, and lion’s mane cover most major cognitive pathways with substantial nominal amounts. Several forms lack active-yield or standardization details, so the impressive label does not translate cleanly into predictable potency.

Two caffeine sources create a heavy stimulant load that may cause jitters or sleep disruption. The label’s Huperzine A amount appears extreme and should be verified with the manufacturer before use because excessive cholinergic activity can cause nausea, dizziness, slow heart rate, or muscle symptoms.

Study evidence
Alpha-GPC Supportive 1 study
Caffeine Supportive 128 studies
Ginkgo Supportive 28 studies
Hericium mushroom No effect 1 study
Huperzine Not classified

No linked studies yet.

Rhodiola Supportive 15 studies
Theanine Supportive 19 studies

Ingredients

IngredientAmount per serving
L-Tyrosine
2000 mg
Lion's Mane Mushroom, Powder
800 mg
DMAE (2-Dimethylaminoethanol Bitartrate)
 750 mg
Alpha GPC
600 mg
Rhodiola rosea extract (Rosavins)
 400 mg
Ginkgo biloba extract
300 mg
N-Phenethyl Dimethylamine
250 mg
Caffeine Anhydrous
200 mg
Di-Caffeine Malate
150 mg
L-Theanine
150 mg
Huperzine A (Huperzia serrata Leaf Extract)
 20 mg
Bioperine (Black Pepper Fruit Extract)
 10 mg
Adults 18–50 Women
Report overview
Theanine · 150 mg OverallScore82
B+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyD+ Value

Clearly identified L-theanine reaches a well-aligned amount for calm focus within a broad cognitive stack. Two caffeine sources create a high combined stimulant load, which may still cause jitters or sleep disruption in sensitive users. The cost per active amount is high, but substantial choline, amino acid, and botanical doses improve the broader value.

View ingredientView products
Tyrosine · 2000 mg OverallScore70
B- Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyD- Value

Isolated L-Tyrosine provides the preferred chemical form, but no raw-material purity or sourcing signal is supplied. The 2000 mg serving is high-strength but remains within the specified upper range, though the exact amount is clearly listed. The cost per gram is in a premium range.

View ingredientView products
Rhodiola (Rosavins) · 400 mg OverallScore67
B Active Ingredient Quality & BioavailabilityA Dose, Safety & Label TransparencyF Value
+1

The 400 mg Rhodiola rosea extract sits within the preferred daily range and clearly identifies the intended species. Rosavins are named, but the rosavin percentage and salidroside standardization are missing, so active potency cannot be verified. Two caffeine sources create a meaningful stimulant burden that may increase jitteriness or interfere with sleep, especially when taking the full eight-capsule serving.

View ingredientView products
Loading alternative details
83 Performance

Pure Energy

Swanson
<p>Caffeine, rhodiola, and theanine provide a much simpler focus-and-energy blend with substantially lower stimulant exposure than the original. Strong focus, productivity, and value evidence make it the clearest lower-cost option in the eligible pool.</p>
77 Performance

Pulse Fruit Punch

Legion
<p>Theanine and alpha-GPC pair with a single listed caffeine source, while the performance ingredients add a fitness emphasis. Caffeine remains high, but the label avoids the original's extreme listed huperzine amount and multiple stimulant sources.</p>
72 Performance

Genius Consciousness Watermelon

The Genius Brand
<p>Alpha-GPC, tyrosine, lion's mane, acetyl-L-carnitine, and moderate caffeine preserve much of the cognitive intent with stronger transparency. Huperzine A is still listed at an unusually large amount, so the available data do not remove that safety concern.</p>
83 Budget

Pure Energy

Swanson
<p>Caffeine, rhodiola, and theanine provide a much simpler focus-and-energy blend with substantially lower stimulant exposure than the original. Strong focus, productivity, and value evidence make it the clearest lower-cost option in the eligible pool.</p>
83 Value

Pure Energy

Swanson
<p>Caffeine, rhodiola, and theanine provide a much simpler focus-and-energy blend with substantially lower stimulant exposure than the original. Strong focus, productivity, and value evidence make it the clearest lower-cost option in the eligible pool.</p>
77 Value

Pulse Fruit Punch

Legion
<p>Theanine and alpha-GPC pair with a single listed caffeine source, while the performance ingredients add a fitness emphasis. Caffeine remains high, but the label avoids the original's extreme listed huperzine amount and multiple stimulant sources.</p>
68 Value

Prolific Sour Green Apple

PEScience
<p>Citicoline, theanine, rhodiola, and taurine support focus and workout performance with a more concise label. The listed caffeine amounts remain very high and the serving cost is higher, so its value depends on also wanting a pre-workout formula.</p>
Report alternatives

Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. Dose-Response Effects of Short-Term Rhodiola rosea (Golden Root Extract) Supplementation on Anaerobic Exercise Performance and Cognitive Function in Resistance-Trained Athletes: A Randomized, Crossover, Double-Blind, and Placebo-Controlled Study.
    Koozehchian MS; Newton AT; Mabrey G; Bonness FM; Rafajlovska R; Naderi A · Nutrients · 2025
    Randomized trial27 participantsMental Focus Brain Health Fitness forRhodiola
  2. The effects of an acute dose of Rhodiola rosea on endurance exercise performance.
    Noreen EE; Buckley JG; Lewis SL; Brandauer J; Stuempfle KJ · Journal of strength and conditioning research · 2013
    Randomized trial18 participantsMental Focus forRhodiola
  3. Promising, but Not Completely Conclusive-The Effect of l-Theanine on Cognitive Performance Based on the Systematic Review and Meta-Analysis of Randomized Placebo-Controlled Clinical Trials.
    Mátyus RO; Szikora Z; Bodó D; Vargáné Szabó B; Csupor É; Csupor D; Tóth B · Journal of clinical medicine · 2025
    Meta-analysis148 participants5 studies pooledMental Focus forTheanine
  4. Time for tea: mood, blood pressure and cognitive performance effects of caffeine and theanine administered alone and together.
    Rogers PJ; Smith JE; Heatherley SV; Pleydell-Pearce CW · Psychopharmacology · 2008
    Randomized trial48 participantsMental Focus Productivity Boost forTheanine
  5. Activity of Choline Alphoscerate on Adult-Onset Cognitive Dysfunctions: A Systematic Review and Meta-Analysis.
    Sagaro GG; Traini E; Amenta F · Journal of Alzheimer's disease : JAD · 2023
    Meta-analysis8 studies pooledBrain Health Cognitive Support forAlpha-GPC
  6. Comparative study of choline alfoscerate as a combination therapy with donepezil: A mixed double-blind randomized controlled and open-label observation trial.
    Lee W; Kim M · Medicine · 2024
    Randomized trial119 participantsBrain Health Cognitive Support forAlpha-GPC
  7. Effects of choline alfoscerate on cognitive function and quality of life in type 2 diabetes: A double-blind, randomized, placebo-controlled trial.
    Sohn M; Park YH; Lim S · Diabetes, obesity & metabolism · 2025
    Randomized trial36 participantsBrain Health Cognitive Support forAlpha-GPC
  8. Acute Alpha-Glycerylphosphorylcholine Supplementation Enhances Cognitive Performance in Healthy Men.
    Kerksick CM · Nutrients · 2024
    Randomized trial20 participantsBrain Health Mental Focus Productivity Boost forAlpha-GPC
  9. Cognitive improvement in mild to moderate Alzheimer's dementia after treatment with the acetylcholine precursor choline alfoscerate: a multicenter, double-blind, randomized, placebo-controlled trial.
    De Jesus Moreno Moreno M · Clinical therapeutics · 2003
    Randomized trial261 participantsBrain Health forAlpha-GPC
  10. Efficacy and adverse effects of ginkgo biloba for cognitive impairment and dementia: a systematic review and meta-analysis.
    Tan MS; Yu JT; Tan CC; Wang HF; Meng XF; Wang C; Jiang T; Zhu XC; Tan L · Journal of Alzheimer's disease : JAD · 2015
    Meta-analysis2,561 participants9 studies pooledBrain Health forGinkgo
  11. Efficacy of Ginkgo biloba extract EGb 761® in dementia with behavioural and psychological symptoms: A systematic review.
    von Gunten A; Schlaefke S; Überla K · The world journal of biological psychiatry : the official journal of the World Federation of Societies of Biological Psychiatry · 2017
    Meta-analysis1,628 participants4 studies pooledBrain Health Cognitive Support forGinkgo
  12. Ginkgo biloba extract EGb 761 is safe and effective in the treatment of mild dementia - a meta-analysis of patient subgroups in randomised controlled trials.
    Riepe M; Hoerr R; Schlaefke S · The world journal of biological psychiatry : the official journal of the World Federation of Societies of Biological Psychiatry · 2025
    Meta-analysis782 participants4 studies pooledBrain Health Productivity Boost forGinkgo
  13. Ginkgo biloba extract EGb 761® improves cognition and overall condition after ischemic stroke: Results from a pilot randomized trial.
    Cui M; You T; Zhao Y; Liu R; Guan Y; Liu J; Liu X; Wang X; Dong Q · Frontiers in pharmacology · 2023
    Randomized trial201 participantsBrain Health Productivity Boost forGinkgo
  14. Ginkgo biloba extract EGb 761® in dementia with neuropsychiatric features: a randomised, placebo-controlled trial to confirm the efficacy and safety of a daily dose of 240 mg.
    Herrschaft H; Nacu A; Likhachev S; Sholomov I; Hoerr R; Schlaefke S · Journal of psychiatric research · 2012
    Randomized trial410 participantsBrain Health forGinkgo
  15. Acute Effects of Naturally Occurring Guayusa Tea and Nordic Lion's Mane Extracts on Cognitive Performance.
    La Monica MB; Raub B; Ziegenfuss EJ; Hartshorn S; Grdic J; Gustat A; Sandrock J; Ziegenfuss TN · Nutrients · 2023
    Randomized trialBrain Health Productivity Boost forHericium mushroom
  16. Improvement of cognitive functions by oral intake of Hericium erinaceus.
    Saitsu Y; Nishide A; Kikushima K; Shimizu K; Ohnuki K · Biomedical research (Tokyo, Japan) · 2020
    Randomized trialBrain Health Cognitive Support forHericium mushroom
  17. Improving effects of the mushroom Yamabushitake (Hericium erinaceus) on mild cognitive impairment: a double-blind placebo-controlled clinical trial.
    Mori K; Inatomi S; Ouchi K; Azumi Y; Tuchida T · Phytotherapy research : PTR · 2009
    Randomized trial30 participantsBrain Health Cognitive Support forHericium mushroom
  18. A review of the effects of mushrooms on mood and neurocognitive health across the lifespan.
    Cha S; Bell L; Shukitt-Hale B; Williams CM · Neuroscience and biobehavioral reviews · 2024
    Systematic review34 studies pooledBrain Health forHericium mushroom
  19. Acute effects of a standardised extract of Hericium erinaceus (Lion's Mane mushroom) on cognition and mood in healthy younger adults: a double-blind randomised placebo-controlled study.
    Surendran G; Saye J; Binti Mohd Jalil S; Spreadborough J; Duong K; Shatwan IM; Lilley D; Heinrich M; Dodd GF; Surendran S · Frontiers in nutrition · 2025
    Randomized trial18 participantsBrain Health Mental Focus forHericium mushroom
  20. Huperzine a in the treatment of Alzheimer's disease and vascular dementia: a meta-analysis.
    Xing SH; Zhu CX; Zhang R; An L · Evidence-based complementary and alternative medicine : eCAM · 2014
    Meta-analysis825 participants10 studies pooledBrain Health Cognitive Support forHuperzine
  21. [Clinical efficacy and safety of huperzine Alpha in treatment of mild to moderate Alzheimer disease, a placebo-controlled, double-blind, randomized trial].
    Zhang Z; Wang X; Chen Q; Shu L; Wang J; Shan G · Zhonghua yi xue za zhi · 2002
    Randomized trial202 participantsBrain Health Cognitive Support forHuperzine
  22. Huperzine A associated with improved early postoperative cognitive function after neurosurgery under general anesthesia: a randomized clinical trial.
    Zhang Z; Shen Y; Li J; Tang Y; Zhou P; Ying T; Mo R; Ru Z; Zhao G; Zhu J; Li S; Zhao H · International journal of surgery (London, England) · 2026
    Randomized trial123 participantsBrain Health Cognitive Support forHuperzine
  23. Treatment with Huperzine A improves cognition in vascular dementia patients.
    Xu ZQ; Liang XM; Juan-Wu; Zhang YF; Zhu CX; Jiang XJ · Cell biochemistry and biophysics · 2012
    Randomized trial78 participantsBrain Health forHuperzine
  24. Huperzine-A response to cognitive impairment and task switching deficits in patients with Alzheimer's disease.
    Gul A; Bakht J; Mehmood F · Journal of the Chinese Medical Association : JCMA · 2019
    Randomized trial100 participantsBrain Health forHuperzine
  25. A combination of green tea, rhodiola, magnesium and B vitamins modulates brain activity and protects against the effects of induced social stress in healthy volunteers.
    Boyle NB; Billington J; Lawton C; Quadt F; Dye L · Nutritional neuroscience · 2022
    Randomized trial100 participantsBrain Health forRhodiola
  26. Rosenroot (Rhodiola rosea): traditional use, chemical composition, pharmacology and clinical efficacy.
    Panossian A; Wikman G; Sarris J · Phytomedicine : international journal of phytotherapy and phytopharmacology · 2010
    Narrative reviewBrain Health forRhodiola
  27. Rhodiola rosea in stress induced fatigue--a double blind cross-over study of a standardized extract SHR-5 with a repeated low-dose regimen on the mental performance of healthy physicians during night duty.
    Darbinyan V; Kteyan A; Panossian A; Gabrielian E; Wikman G; Wagner H · Phytomedicine : international journal of phytotherapy and phytopharmacology · 2001
    Randomized trial56 participantsBrain Health Productivity Boost forRhodiola
  28. Effects of a Rhodiola rosea extract on mental resource allocation and attention: An event-related potential dual task study.
    Koop T; Dienel A; Heldmann M; Münte TF · Phytotherapy research : PTR · 2021
    Single-arm trial50 participantsBrain Health Cognitive Support forRhodiola
  29. Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial.
    Hidese S; Ogawa S; Ota M; Ishida I; Yasukawa Z; Ozeki M; Kunugi H · Nutrients · 2020
    Randomized trial30 participantsBrain Health Cognitive Support forTheanine
  30. A Randomized, Triple-Blind, Placebo-Controlled, Crossover Study to Investigate the Efficacy of a Single Dose of AlphaWave® L-Theanine on Stress in a Healthy Adult Population.
    Evans M; McDonald AC; Xiong L; Crowley DC; Guthrie N · Neurology and therapy · 2021
    Randomized trialBrain Health Stress Relief forTheanine
  31. Effects of Tea (Camellia sinensis) or its Bioactive Compounds l-Theanine or l-Theanine plus Caffeine on Cognition, Sleep, and Mood in Healthy Participants: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.
    Payne ER; Aceves-Martins M; Dubost J; Greyling A; de Roos B · Nutrition reviews · 2025
    Meta-analysis50 studies pooledBrain Health Cognitive Support Mental Focus forTheanine
  32. Assessing the effects of caffeine and theanine on the maintenance of vigilance during a sustained attention task.
    Foxe JJ; Morie KP; Laud PJ; Rowson MJ; de Bruin EA; Kelly SP · Neuropharmacology · 2012
    Randomized trial27 participantsBrain Health Cognitive Support forTheanine
  33. Effects of l-Theanine on Cognitive Function in Middle-Aged and Older Subjects: A Randomized Placebo-Controlled Study.
    Baba Y; Inagaki S; Nakagawa S; Kaneko T; Kobayashi M; Takihara T · Journal of medicinal food · 2021
    Randomized trialBrain Health Mental Focus Productivity Boost forTheanine
  34. Combined L-carnosine and L-tyrosine supplementation as an ergogenic strategy for physical and cognitive performance under fatigue in professional football players.
    Bilgin S; Bozyılan E; Buzdağlı Y; Karaç Öcal Y; Gürkan O; Toktaş S; İnan H; Egil İ; Yarayan YE · Frontiers in nutrition · 2026
    Randomized trial24 participantsBrain Health forTyrosine
  35. Effect of tyrosine supplementation on clinical and healthy populations under stress or cognitive demands--A review.
    Jongkees BJ; Hommel B; Kühn S; Colzato LS · Journal of psychiatric research · 2016
    Narrative reviewBrain Health forTyrosine
  36. Influence of nutritional tyrosine on cognition and functional connectivity in healthy old humans.
    Hensel C; Becker M; Düzel S; Demuth I; Norman K; Steinhagen-Thiessen E; Gallinat J; Lindenberger U; Kühn S · NeuroImage · 2019
    Cross-sectional study286 participantsBrain Health forTyrosine
  37. Dietary Tyrosine Intake (FFQ) Is Associated with Locus Coeruleus, Attention and Grey Matter Maintenance: An MRI Structural Study on 398 Healthy Individuals of the Berlin Aging Study-II.
    Plini ERG; Melnychuk MC; Harkin A; Dahl MJ; McAuslan M; Kühn S; Boyle RT; Whelan R; Andrews R; Düzel S; Drewelies J; Wagner GG; Lindenberger U; Norman K; Robertson IH; Dockree PM · The journal of nutrition, health & aging · 2023
    Cross-sectional study398 participantsBrain Health forTyrosine
  38. Baseline-dependent effect of dopamine's precursor L-tyrosine on working memory gating but not updating.
    Jongkees BJ · Cognitive, affective & behavioral neuroscience · 2021
    Randomized trial45 participantsBrain Health forTyrosine
  39. [Gliatilin in the Treatment of Cognitive Impairments Not Reaching the Level of Dementia: Meta-Analysis and Systematic Review].
    Voznyuk IA; Nepomnyashchiy IS; Kutkova AK; Tokareva DV; Prokhorova MV; Ovdiienko OA; Shusharina NN · Zhurnal nevrologii i psikhiatrii imeni S.S. Korsakova · 2025
    Meta-analysis10 studies pooledCognitive Support forAlpha-GPC
  40. Vertical Association Between Dietary Total Choline and L-alpha-glycerylphosphorylcholine and the Cognitive Function in Chinese Adults Aged over 55, Result from China Health and Nutrition Survey 1997-2018.
    Guan F; Jia X; Huang F; Zhang J; Wei Y; Li L; Bai J; Wang H · Nutrients · 2024
    Cohort study7,659 participantsCognitive Support forAlpha-GPC
  41. Efficacy of ginkgo diterpene lactone meglumine on cognitive function in patients with acute ischemic stroke: a predefined exploratory analysis of a multicenter, double-blind, randomized controlled trial.
    Tian X; Xu Q; Xia X; Zhang Y; Meng X; Wang A · Journal of neurology · 2024
    Randomized trial3,163 participantsCognitive Support forGinkgo
  42. A placebo-controlled, double-blind, randomized trial of an extract of Ginkgo biloba for dementia. North American EGb Study Group.
    Le Bars PL; Katz MM; Berman N; Itil TM; Freedman AM; Schatzberg AF · JAMA · 1997
    Randomized trial309 participantsCognitive Support Productivity Boost forGinkgo
  43. Alleviating neuropsychiatric symptoms in dementia: the effects of Ginkgo biloba extract EGb 761. Findings from a randomized controlled trial.
    Bachinskaya N; Hoerr R; Ihl R · Neuropsychiatric disease and treatment · 2011
    Randomized trial410 participantsCognitive Support forGinkgo
  44. Efficacy and safety of a once-daily formulation of Ginkgo biloba extract EGb 761 in dementia with neuropsychiatric features: a randomized controlled trial.
    Ihl R; Bachinskaya N; Korczyn AD; Vakhapova V; Tribanek M; Hoerr R; Napryeyenko O; GOTADAY Study Group · International journal of geriatric psychiatry · 2013
    Randomized trial410 participantsCognitive Support forGinkgo
  45. Prevention of Early Alzheimer's Disease by Erinacine A-Enriched Hericium erinaceus Mycelia Pilot Double-Blind Placebo-Controlled Study.
    Li IC; Chang HH; Lin CH; Chen WP; Lu TH; Lee LY; Chen YW; Chen YP; Chen CC; Lin DP · Frontiers in aging neuroscience · 2024
    Randomized trialCognitive Support forHericium mushroom
  46. Benefits, side effects, and uses of Hericium erinaceus as a supplement: a systematic review.
    Menon A; Jalal A; Arshad Z; Nawaz FA; Kashyap R · Frontiers in nutrition · 2025
    Systematic review26 studies pooledCognitive Support forHericium mushroom
  47. The Acute and Chronic Effects of Lion's Mane Mushroom Supplementation on Cognitive Function, Stress and Mood in Young Adults: A Double-Blind, Parallel Groups, Pilot Study.
    Docherty S; Doughty FL; Smith EF · Nutrients · 2023
    Randomized trial41 participantsCognitive Support forHericium mushroom
  48. Adjunctive huperzine A for cognitive deficits in schizophrenia: a systematic review and meta-analysis.
    Zheng W; Xiang YQ; Li XB; Ungvari GS; Chiu HF; Sun F; D'Arcy C; Meng X; Xiang YT · Human psychopharmacology · 2017
    Meta-analysis1,117 participants12 studies pooledCognitive Support forHuperzine
  49. [Drug evaluation of huperzine A in the treatment of senile memory disorders].
    Zhang RW; Tang XC; Han YY; Sang GW; Zhang YD; Ma YX; Zhang CL; Yang RM · Zhongguo yao li xue bao = Acta pharmacologica Sinica · 1992
    Randomized trial56 participantsCognitive Support forHuperzine
  50. Evidence-based efficacy of adaptogens in fatigue, and molecular mechanisms related to their stress-protective activity.
    Panossian A; Wikman G · Current clinical pharmacology · 2009
    Narrative reviewCognitive Support Mental Focus forRhodiola
  51. Central additive effect of Ginkgo biloba and Rhodiola rosea on psychomotor vigilance task and short-term working memory accuracy.
    Al-Kuraishy HM · Journal of intercultural ethnopharmacology · 2016
    Clinical trial112 participantsCognitive Support forRhodiola
  52. Clinical evidence for the adaptogenic effects of Withania somnifera and Rhodiola rosea - A systematic review with molecular interpretation of psychometric outcomes.
    Łuszczak J; Kocki J · Annals of agricultural and environmental medicine : AAEM · 2026
    Systematic review19 studies pooledCognitive Support Stress Relief forRhodiola
  53. A randomised, double-blind, placebo-controlled, parallel-group study of the standardised extract shr-5 of the roots of Rhodiola rosea in the treatment of subjects with stress-related fatigue.
    Olsson EM; von Schéele B; Panossian AG · Planta medica · 2009
    Randomized trial60 participantsCognitive Support Productivity Boost forRhodiola
  54. Dose-response effect of L-theanine on psychomotor speed, sustained attention, and inhibitory control: a double-blind, placebo-controlled, crossover study.
    Dassanayake TL; Wijesundara D; Kahathuduwa CN; Weerasinghe VS · Nutritional neuroscience · 2023
    Randomized trial32 participantsCognitive Support forTheanine
  55. Acute effects of theanine, caffeine and theanine-caffeine combination on attention.
    Kahathuduwa CN; Dassanayake TL; Amarakoon AMT; Weerasinghe VS · Nutritional neuroscience · 2018
    Clinical trial20 participantsCognitive Support Mental Focus forTheanine
  56. Cognitive and mood improvements of caffeine in habitual consumers and habitual non-consumers of caffeine.
    Haskell CF; Kennedy DO; Wesnes KA; Scholey AB · Psychopharmacology · 2005
    Randomized trial48 participantsEnergy forCaffeine
  57. Caffeine-containing energy drink improves physical performance of elite rugby players during a simulated match.
    Del Coso J; Ramírez JA; Muñoz G; Portillo J; Gonzalez-Millán C; Muñoz V; Barbero-Álvarez JC; Muñoz-Guerra J · Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme · 2016
    Randomized trial26 participantsEnergy forCaffeine
  58. Differential cognitive effects of energy drink ingredients: caffeine, taurine, and glucose.
    Giles GE; Mahoney CR; Brunyé TT; Gardony AL; Taylor HA; Kanarek RB · Pharmacology, biochemistry, and behavior · 2013
    Randomized trial48 participantsEnergy forCaffeine
  59. Does Single or Combined Caffeine and Taurine Supplementation Improve Athletic and Cognitive Performance without Affecting Fatigue Level in Elite Boxers? A Double-Blind, Placebo-Controlled Study.
    Ozan M; Buzdagli Y; Eyipinar CD; Baygutalp NK; Yüce N; Oget F; Kan E; Baygutalp F · Nutrients · 2022
    Randomized trial20 participantsEnergy forCaffeine
  60. Trait Energy and Fatigue Modify the Effects of Caffeine on Mood, Cognitive and Fine-Motor Task Performance: A Post-Hoc Study.
    Fuller DT; Smith ML; Boolani A · Nutrients · 2021
    Randomized trialEnergy forCaffeine
  61. The Effect of Short-Term Rhodiola rosea Supplementation on Simulated Game Time, Perceived Fatigue, and Performance in Basketball Players.
    Wang J; Zhao H; Yu L; Zhao K; Jiang W; Liu S; Dai J; Xu L; Sun P; Yun H; Liu C · Nutrients · 2025
    Randomized trial48 participantsEnergy Fitness forRhodiola
  62. Effects of Rhodiola rosea on Physical and Decision-Making Performance in Football Players: A Randomised Controlled Trial.
    Dou Y; Wang Y; Zhang W; Jiang Y; Zhang J; Yang T; Han Z; Li Y; Liu C; Ren D · Nutrients · 2026
    Randomized trial24 participantsEnergy Fitness Mental Focus forRhodiola
  63. Combined Effects of Rhodiola Rosea and Caffeine Supplementation on Straight Punch Explosive Power in Untrained and Trained Boxing Volunteers: A Synergistic Approach.
    Tao B; Sun H; Li H; Xu Z; Xu Y; Chen L; Ma C; Zhang X; Yu L; Bao S; Liu C · Metabolites · 2025
    Randomized trial96 participantsEnergy forRhodiola
  64. Rhodiola rosea in Subjects with Prolonged or Chronic Fatigue Symptoms: Results of an Open-Label Clinical Trial.
    Lekomtseva Y; Zhukova I; Wacker A · Complementary medicine research · 2019
    Single-arm trial100 participantsEnergy Stress Relief forRhodiola
  65. Combined Rhodiola rosea and eccentric training boost endurance performance and lower-limb reactive strength in recreationally active women.
    Wang IL; Su Y; Zhang L; Tang M; Chen YM · Frontiers in physiology · 2025
    Randomized trial30 participantsEnergy Fitness forRhodiola
  66. Effect of caffeine ingestion on cycling performance: a systematic review and meta-analysis.
    Wu J; Xu K; Yin M; Ding X; Wang T; Zhang Q; Wu X; Xiao N · Frontiers in nutrition · 2026
    Meta-analysis226 participants20 studies pooledFitness forCaffeine
  67. Effects of Caffeine Intake on Endurance Running Performance and Time to Exhaustion: A Systematic Review and Meta-Analysis.
    Wang Z; Qiu B; Gao J; Del Coso J · Nutrients · 2023
    Meta-analysis254 participants21 studies pooledFitness forCaffeine
  68. Acute Effects of Caffeine Supplementation on Movement Velocity in Resistance Exercise: A Systematic Review and Meta-analysis.
    Raya-González J; Rendo-Urteaga T; Domínguez R; Castillo D; Rodríguez-Fernández A; Grgic J · Sports medicine (Auckland, N.Z.) · 2021
    Meta-analysis12 studies pooledFitness forCaffeine
  69. Sex Differences in the Ergogenic Response of Acute Caffeine Intake on Muscular Strength, Power and Endurance Performance in Resistance-Trained Individuals: A Randomized Controlled Trial.
    Montalvo-Alonso JJ; Ferragut C; Del Val-Manzano M; Valadés D; Roberts J; Pérez-López A · Nutrients · 2024
    Randomized trial76 participantsFitness forCaffeine
  70. Can I Have My Coffee and Drink It? A Systematic Review and Meta-analysis to Determine Whether Habitual Caffeine Consumption Affects the Ergogenic Effect of Caffeine.
    Carvalho A; Marticorena FM; Grecco BH; Barreto G; Saunders B · Sports medicine (Auckland, N.Z.) · 2022
    Meta-analysis60 studies pooledFitness forCaffeine
  71. The Impact of Rhodiola Rosea Extract on Strength Performance in Alternative Bench-Press and Bench-Pull Exercises Under Resting and Mental Fatigue Conditions: A Randomized, Triple-Blinded, Placebo-Controlled, Crossover Trial.
    Marcos-Frutos D; Leban Ž; Li Z; Zhang X; Lara PM; Alix-Fages C; Jiménez-Martínez P; Zebboudji N; Caillet A; Redondo B; Vera J; Janicijevic D; García-Ramos A · Nutrients · 2025
    Randomized trial18 participantsFitness forRhodiola
  72. Effects of modafinil and caffeine on night-time vigilance of air force crewmembers: A randomized controlled trial.
    Wingelaar-Jagt YQ; Bottenheft C; Riedel WJ; Ramaekers JG · Journal of psychopharmacology (Oxford, England) · 2023
    Randomized trial32 participantsMental Focus forCaffeine
  73. Acute effects of caffeine on attention: a comparison of non-consumers and withdrawn consumers.
    Smith AP; Christopher G; Sutherland D · Journal of psychopharmacology (Oxford, England) · 2013
    Randomized trial70 participantsMental Focus forCaffeine
  74. Performance and alertness effects of caffeine, dextroamphetamine, and modafinil during sleep deprivation.
    Wesensten NJ; Killgore WD; Balkin TJ · Journal of sleep research · 2006
    Randomized trial48 participantsMental Focus forCaffeine
  75. Effects of caffeine on mood and performance: a study of realistic consumption.
    Brice CF; Smith AP · Psychopharmacology · 2003
    Clinical trial24 participantsMental Focus forCaffeine
  76. Effects of caffeine or diphenhydramine on visual vigilance.
    Fine BJ; Kobrick JL; Lieberman HR; Marlowe B; Riley RH; Tharion WJ · Psychopharmacology · 1995
    Randomized trial24 participantsMental Focus forCaffeine
  77. Ginkgo biloba Extract EGb 761 in the Treatment of Patients with Mild Neurocognitive Impairment: A Systematic Review.
    Hort J; Duning T; Hoerr R · Neuropsychiatric disease and treatment · 2023
    Systematic review946 participants9 studies pooledMental Focus forGinkgo
  78. Proof of efficacy of the Ginkgo biloba special extract EGb 761 in outpatients suffering from mild to moderate primary degenerative dementia of the Alzheimer type or multi-infarct dementia.
    Kanowski S; Herrmann WM; Stephan K; Wierich W; Hörr R · Phytomedicine : international journal of phytotherapy and phytopharmacology · 2012
    Randomized trial216 participantsMental Focus forGinkgo
  79. Proof of efficacy of the ginkgo biloba special extract EGb 761 in outpatients suffering from mild to moderate primary degenerative dementia of the Alzheimer type or multi-infarct dementia.
    Kanowski S; Herrmann WM; Stephan K; Wierich W; Hörr R · Pharmacopsychiatry · 1996
    Randomized trial216 participantsMental Focus forGinkgo
  80. Ginkgo biloba extract improved cognitive and neurological functions of acute ischaemic stroke: a randomised controlled trial.
    Li S; Zhang X; Fang Q; Zhou J; Zhang M; Wang H; Chen Y; Xu B; Wu Y; Qian L; Xu Y · Stroke and vascular neurology · 2021
    Randomized trial348 participantsMental Focus forGinkgo
  81. Ginkgo biloba in the Aging Process: A Narrative Review.
    Barbalho SM; Direito R; Laurindo LF; Marton LT; Guiguer EL; Goulart RA; Tofano RJ; Carvalho ACA; Flato UAP; Capelluppi Tofano VA; Detregiachi CRP; Bueno PCS; Girio RSJ; Araújo AC · Antioxidants (Basel, Switzerland) · 2024
    Narrative review14 studies pooledMental Focus forGinkgo
  82. The effectiveness and efficacy of Rhodiola rosea L.: a systematic review of randomized clinical trials.
    Hung SK; Perry R; Ernst E · Phytomedicine : international journal of phytotherapy and phytopharmacology · 2012
    Systematic review11 studies pooledMental Focus forRhodiola
  83. Effects of Rhodiola rosea supplementation on mental performance, physical capacity, and oxidative stress biomarkers in healthy men.
    Jówko E; Sadowski J; Długołęcka B; Gierczuk D; Opaszowski B; Cieśliński I · Journal of sport and health science · 2022
    Randomized trial26 participantsMental Focus Productivity Boost forRhodiola
  84. Safety and Efficacy of AlphaWave® L-Theanine Supplementation for 28 Days in Healthy Adults with Moderate Stress: A Randomized, Double-Blind, Placebo-Controlled Trial.
    Moulin M; Crowley DC; Xiong L; Guthrie N; Lewis ED · Neurology and therapy · 2024
    Randomized trial30 participantsMental Focus Productivity Boost Stress Relief forTheanine
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    Karunaratne UW; Dassanayake TL · Nutritional neuroscience · 2025
    Randomized trial24 participantsMental Focus forTheanine
  86. A Randomized Study to Examine the Ability of a Caffeine-Based Energy Drink to Impact Energy Expenditure, Fat Oxidation, and Cognitive Performance.
    Krieger J; Schrautemeier A; Hagele A; Gaige C; Mennemeyer O; Tolbert S; Iannotti J; Kerksick C; Noonan C; Mumford P · Nutrients · 2025
    Randomized trial60 participantsMetabolism Boost forCaffeine
  87. Oolong tea increases metabolic rate and fat oxidation in men.
    Rumpler W; Seale J; Clevidence B; Judd J; Wiley E; Yamamoto S; Komatsu T; Sawaki T; Ishikura Y; Hosoda K · The Journal of nutrition · 2001
    Randomized trial12 participantsMetabolism Boost forCaffeine
  88. Effect of caffeine intake on fat oxidation rate during exercise: is there a dose-response effect?
    Gutiérrez-Hellín J; Aguilar-Navarro M; Ruiz-Moreno C; Muñoz A; Varillas-Delgado D; Amaro-Gahete FJ; Del Coso J · European journal of nutrition · 2023
    Randomized trial18 participantsMetabolism Boost forCaffeine
  89. Comparison of changes in energy expenditure and body temperatures after caffeine consumption.
    Koot P; Deurenberg P · Annals of nutrition & metabolism · 1995
    Randomized trial12 participantsMetabolism Boost forCaffeine
  90. Caffeine Increases Work Done above Critical Power, but Not Anaerobic Work.
    Silveira R; Andrade-Souza VA; Arcoverde L; Tomazini F; Sansonio A; Bishop DJ; Bertuzzi R; Lima-Silva AE · Medicine and science in sports and exercise · 2018
    Randomized trial9 participantsMetabolism Boost forCaffeine
  91. Association Between the Cholinesterase Inhibitor Donepezil and the Cholinergic Precursor Choline Alphoscerate in the Treatment of Depression in Patients with Alzheimer's Disease
    Anna Carotenuto, Angiola Maria Fasanaro, Valentino Manzo, Francesco Amenta, Enea Traini · Journal of Alzheimer's disease reports · 2022
    Randomized trial90 participantsMood Support forAlpha-GPC
  92. Efficacy of Pharmacological Interventions in Milder Depression: A Systematic Review and Meta-Analysis.
    Urata M; Sakurai H; Ueno F; Maruki T; Tada T; Uchida T; Matsumoto Y; Murao M; Tomita M; Baba H; Kato M; Tsuboi T; Watanabe K · Neuropsychopharmacology reports · 2025
    Meta-analysis1,049 participants2 studies pooledMood Support forRhodiola
  93. The Effect of Acute Rhodiola rosea Ingestion on Exercise Heart Rate, Substrate Utilisation, Mood State, and Perceptions of Exertion, Arousal, and Pleasure/Displeasure in Active Men.
    Duncan MJ; Clarke ND · Journal of sports medicine (Hindawi Publishing Corporation) · 2015
    Clinical trial10 participantsMood Support forRhodiola
  94. Herbal medicine for depression, anxiety and insomnia: a review of psychopharmacology and clinical evidence.
    Sarris J; Panossian A; Schweitzer I; Stough C; Scholey A · European neuropsychopharmacology : the journal of the European College of Neuropsychopharmacology · 2012
    Systematic review66 studies pooledMood Support forRhodiola
  95. Medicinal Plants in the Treatment of Depression. II: Evidence from Clinical Trials.
    Moragrega I; Ríos JL · Planta medica · 2022
    Systematic reviewMood Support forRhodiola
  96. Multicenter, open-label, exploratory clinical trial with Rhodiola rosea extract in patients suffering from burnout symptoms.
    Kasper S; Dienel A · Neuropsychiatric disease and treatment · 2020
    Single-arm trial118 participantsMood Support forRhodiola
  97. l-theanine adjunct to sertraline for major depressive disorder: A randomized, double-blind, placebo-controlled clinical trial.
    Shamabadi A; Kafi F; Arab Bafrani M; Asadigandomani H; A Basti F; Akhondzadeh S · Journal of affective disorders · 2023
    Randomized trial60 participantsMood Support forTheanine
  98. L-theanine relieves positive, activation, and anxiety symptoms in patients with schizophrenia and schizoaffective disorder: an 8-week, randomized, double-blind, placebo-controlled, 2-center study.
    Ritsner MS; Miodownik C; Ratner Y; Shleifer T; Mar M; Pintov L; Lerner V · The Journal of clinical psychiatry · 2011
    Randomized trial60 participantsMood Support Stress Relief forTheanine
  99. The Effects of Green Tea Amino Acid L-Theanine Consumption on the Ability to Manage Stress and Anxiety Levels: a Systematic Review.
    Williams JL; Everett JM; D'Cunha NM; Sergi D; Georgousopoulou EN; Keegan RJ; McKune AJ; Mellor DD; Anstice N; Naumovski N · Plant foods for human nutrition (Dordrecht, Netherlands) · 2020
    Systematic review9 studies pooledMood Support forTheanine
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    Deshpande SS; Kurdi M; Baiju A; Athira AS; Sarasamma AG; Gangadharan AK · Journal of anaesthesiology, clinical pharmacology · 2025
    Randomized trial168 participantsMood Support Stress Relief forTheanine
  101. Anti-stress effect of theanine on students during pharmacy practice: positive correlation among salivary α-amylase activity, trait anxiety and subjective stress.
    Unno K; Tanida N; Ishii N; Yamamoto H; Iguchi K; Hoshino M; Takeda A; Ozawa H; Ohkubo T; Juneja LR; Yamada H · Pharmacology, biochemistry, and behavior · 2014
    Randomized trial20 participantsMood Support forTheanine
  102. Treatment of dementia with neurotransmission modulation.
    Doggrell SA; Evans S · Expert opinion on investigational drugs · 2004
    Narrative reviewProductivity Boost forAlpha-GPC
  103. Effects of caffeine on alertness.
    Zwyghuizen-Doorenbos A; Roehrs TA; Lipschutz L; Timms V; Roth T · Psychopharmacology · 1990
    Randomized trial24 participantsProductivity Boost forCaffeine
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    Irwin C; McCartney D; Grant G; Delang N; Bartrim K; Cox GR; Desbrow B · Perceptual and motor skills · 2023
    Randomized trial22 participantsProductivity Boost forCaffeine
  105. Effects of caffeine, sleep loss, and stress on cognitive performance and mood during U.S. Navy SEAL training. Sea-Air-Land.
    Lieberman HR; Tharion WJ; Shukitt-Hale B; Speckman KL; Tulley R · Psychopharmacology · 2003
    Randomized trial68 participantsProductivity Boost forCaffeine
  106. A review of caffeine's effects on cognitive, physical and occupational performance.
    McLellan TM; Caldwell JA; Lieberman HR · Neuroscience and biobehavioral reviews · 2017
    Narrative reviewProductivity Boost forCaffeine
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    Wang R; Wang W; Meng L; Hao G; Gu G · Frontiers in nutrition · 2026
    Meta-analysis7 studies pooledProductivity Boost forCaffeine
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    Kasper S; Schubert H · Fortschritte der Neurologie-Psychiatrie · 2009
    Meta-analysis10 studies pooledProductivity Boost forGinkgo
  109. Dietary Flavonoids and Human Cognition: A Meta-Analysis.
    Cheng N; Bell L; Lamport DJ; Williams CM · Molecular nutrition & food research · 2022
    Meta-analysis5,519 participants80 studies pooledProductivity Boost forGinkgo
  110. Limited cognitive benefits in Stage +2 postmenopausal women after 6 weeks of treatment with Ginkgo biloba.
    Elsabagh S; Hartley DE; File SE · Journal of psychopharmacology (Oxford, England) · 2005
    Randomized trial87 participantsProductivity Boost forGinkgo
  111. Efficacy and safety of Ginkgo biloba extract EGb 761 in mild cognitive impairment with neuropsychiatric symptoms: a randomized, placebo-controlled, double-blind, multi-center trial.
    Gavrilova SI; Preuss UW; Wong JW; Hoerr R; Kaschel R; Bachinskaya N; GIMCIPlus Study Group · International journal of geriatric psychiatry · 2015
    Randomized trial160 participantsProductivity Boost forGinkgo
  112. Modulation of cognitive performance following single doses of 120 mg Ginkgo biloba extract administered to healthy young volunteers.
    Kennedy DO; Jackson PA; Haskell CF; Scholey AB · Human psychopharmacology · 2008
    Randomized trial78 participantsProductivity Boost forGinkgo
  113. Four Weeks of Hericium erinaceus Supplementation Does Not Impact Markers of Metabolic Flexibility or Cognition.
    Grozier CD; Alves VA; Killen LG; Simpson JD; O'Neal EK; Waldman HS · International journal of exercise science · 2025
    Non-randomized trial24 participantsProductivity Boost forHericium mushroom
  114. A double-blind, placebo-controlled pilot study of the stimulating and adaptogenic effect of Rhodiola rosea SHR-5 extract on the fatigue of students caused by stress during an examination period with a repeated low-dose regimen.
    Spasov AA; Wikman GK; Mandrikov VB; Mironova IA; Neumoin VV · Phytomedicine : international journal of phytotherapy and phytopharmacology · 2000
    Randomized trialProductivity Boost forRhodiola
  115. The Effectiveness of Rhodiola rosea L. Preparations in Alleviating Various Aspects of Life-Stress Symptoms and Stress-Induced Conditions-Encouraging Clinical Evidence.
    Ivanova Stojcheva E; Quintela JC · Molecules (Basel, Switzerland) · 2022
    Narrative reviewProductivity Boost Stress Relief forRhodiola
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    Gerolymos C; Saddier E; Boyer L; Fond G · Molecular psychiatry · 2026
    Meta-analysis1,168 participants31 studies pooledProductivity Boost forTheanine
  117. Effects of L-theanine on cognition, mood and sleep: evidence from human trials.
    Cotter J; Kilpatrick HE · Frontiers in nutrition · 2026
    Narrative reviewProductivity Boost forTheanine
  118. Stress management and the role of Rhodiola rosea: a review.
    Anghelescu IG; Edwards D; Seifritz E; Kasper S · International journal of psychiatry in clinical practice · 2019
    Narrative reviewStress Relief forRhodiola
  119. Plant-based medicines for anxiety disorders, part 2: a review of clinical studies with supporting preclinical evidence.
    Sarris J; McIntyre E; Camfield DA · CNS drugs · 2013
    Narrative reviewStress Relief forRhodiola
  120. Anti-Stress, Behavioural and Magnetoencephalography Effects of an L-Theanine-Based Nutrient Drink: A Randomised, Double-Blind, Placebo-Controlled, Crossover Trial.
    White DJ; de Klerk S; Woods W; Gondalia S; Noonan C; Scholey AB · Nutrients · 2016
    Randomized trial34 participantsStress Relief forTheanine
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    Lopez-Garcia E; van Dam RM; Rajpathak S; Willett WC; Manson JE; Hu FB · The American journal of clinical nutrition · 2006
    Cohort study58,157 participantsWeight Loss forCaffeine
  122. Does caffeine ingestion before a short-term sprint interval training promote body fat loss?
    Ferreira GA; Felippe LC; Bertuzzi R; Bishop DJ; Ramos IS; De-Oliveira FR; Lima-Silva AE · Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologicas · 2020
    Randomized trial20 participantsWeight Loss forCaffeine
  123. Eight Weeks of Sprint Interval Training With Adding Caffeine Ingestion Leads to Greater Improvements in Health-Related Physiological Parameters in Obese Male Adults.
    Zhiang J; Song Q · Physiological research · 2026
    Randomized trial30 participantsWeight Loss forCaffeine
  124. Caffeine treatment prevented from weight regain after calorie shifting diet induced weight loss.
    Davoodi SH; Hajimiresmaiel SJ; Ajami M; Mohseni-Bandpei A; Ayatollahi SA; Dowlatshahi K; Javedan G; Pazoki-Toroudi H · Iranian journal of pharmaceutical research : IJPR · 2014
    Non-randomized trial60 participantsWeight Loss forCaffeine
  125. The effects of caffeine intake on weight loss: a systematic review and dos-response meta-analysis of randomized controlled trials.
    Tabrizi R; Saneei P; Lankarani KB; Akbari M; Kolahdooz F; Esmaillzadeh A; Nadi-Ravandi S; Mazoochi M; Asemi Z · Critical reviews in food science and nutrition · 2020
    Meta-analysis606 participants13 studies pooledWeight Loss forCaffeine