Product Image

Trans4orm

Evlution Nutrition
4.7
★ ★ ★ ★ ★
(2118 ratings)
Choline 120 mg
Caffeine 175 mg
Tyrosine 200 mg
Alpha-GPC 50 mg
Folate 400 mcg
Green Tea 500 mg
Product Image
Score67
A value-focused stimulant blend with clear caffeine and useful choline, but yohimbe and several weakly characterized actives make its effects harder to predict.
How scoring works
Quantity:120 Capsule(s) • (60 servings)
Goals:
Metabolism Boost
Weight Loss
Energy
Cognitive Support
Mental Focus

Score 67

A value-focused stimulant blend with clear caffeine and useful choline, but yohimbe and several weakly characterized actives make its effects harder to predict.
How scoring works
$19.49($0.32 per serving)
BodyBuilding.com
$ 19.49
Vitacost
$ 26.25
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Analysis

Coffee-derived caffeine is clearly quantified and supplies the formula's most dependable energy effect. Choline adds useful support, but the Alpha-GPC and L-tyrosine amounts are modest for focused cognitive use.

Green tea, coleus, yohimbe, and black pepper create a broad metabolism-oriented blend, yet several extracts lack active-marker details. The result is more convincing for stimulation than for precisely dosed fat-loss or nootropic support.

The low serving cost is appealing, but yohimbe makes tolerability less predictable than caffeine alone. People sensitive to stimulants may find the combination too intense even though the caffeine amount itself is moderate.

Who is it for
  • Adults comfortable with multi-ingredient stimulant formulas
  • People seeking inexpensive energy and metabolism support
Best for
  • Energy
  • Metabolism support
  • Pre-workout alertness

Pros

  • Caffeine amount is clearly stated
  • Includes a useful choline contribution
  • Low cost per serving
  • Convenient two-capsule serving

Cons

  • Alpha-GPC amount is low
  • L-tyrosine amount is modest
  • Green tea active markers are not disclosed
  • Yohimbe potency is unclear

Warnings

  • Caffeine plus yohimbe may increase jitteriness, anxiety, heart rate, or blood pressure.
  • Avoid combining with other stimulant products, especially later in the day.
  • Yohimbe makes this a poor choice for people with cardiovascular concerns or strong stimulant sensitivity.

Nutrient quality

56 Moderate impact

Caffeine and green tea provide the main practical effects, while tyrosine and Alpha-GPC are underpowered. The crowded stimulant blend and unclear active yields reduce confidence in balance and safety.

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Ingredient transparency

71 High impact

Active amounts are broadly clear and no proprietary blend hides the listed doses. Missing inactive ingredients and incomplete usage or source details prevent full label transparency.

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Customer satisfaction

70 High impact

The average rating is strong and supported by a large review base. No specific feedback themes are supplied, so recurring tolerability issues and purpose fit cannot be confirmed.

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Value for money

71 High impact

The low serving cost provides accessible stimulant value through clearly stated caffeine. Underdosed cognitive additions and uncertain botanical yields weaken the quality received per serving.

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Goals

Metabolism Boost
Metabolism Boost
Impact
High effect
A Goal FitB- Strength of SupportB+ CoverageB- Formula Quality
Niacin · 15 mgVitamin B12 · 6 mcgVitamin B6 · 2 mgGreen Tea · 500 mgCaffeine · 175 mg

Caffeine and green tea create a direct thermogenic core, while coleus and tyrosine add secondary metabolic pathways. The formula is strongly aligned with short-term energy expenditure but less certain in active-marker precision.

Caffeine is clearly quantified, but EGCG and yohimbine yields are not disclosed. Combining caffeine with yohimbe may increase heart rate or blood pressure, making the stack unsuitable for stimulant-sensitive users.

Study evidence
Caffeine Disputed 40 studies
Green Tea Supportive 31 studies
Weight Loss
Weight Loss
Impact
High effect
B+ Goal FitB- Strength of SupportB CoverageB+ Formula Quality
Green Tea · 500 mgCaffeine · 175 mg

Caffeine, green tea, yohimbe, coleus, and tyrosine directly target thermogenesis and training energy. Caffeine has good support, but green tea lacks an EGCG amount and yohimbe evidence is less consistent and carries more risk.

Caffeine is clearly quantified at a meaningful amount, while the green tea and yohimbe active yields are not disclosed. Several pathways are present, but incomplete standardization weakens confidence in their combined dose depth. Yohimbe can raise heart rate and blood pressure, and its undisclosed yohimbine yield makes the combined stimulant exposure difficult to predict.

Study evidence
Caffeine Disputed 14 studies
Green Tea Supportive 42 studies
Energy
Energy
Impact
High effect
A+ Goal FitB+ Strength of SupportB+ CoverageD Formula Quality
Vitamin B12 · 6 mcgCaffeine · 175 mg

A moderate caffeine amount should provide a reliable short-term increase in alertness and perceived energy. Choline, tyrosine, green tea, and B vitamins attempt to extend the focus toward cognition and metabolism.

Yohimbe adds stimulant risk without a disclosed yohimbine amount, while several cognitive ingredients appear underdosed. People with high blood pressure, heart-rhythm concerns, or stimulant sensitivity should avoid the yohimbe and caffeine combination unless a clinician considers it appropriate.

Study evidence
Caffeine Supportive 68 studies
Cognitive Support
Cognitive Support
Impact
High effect
A- Goal FitC- Strength of SupportC+ CoverageC Formula Quality
Choline · 300 mgVitamin B6 · 2 mgFolate · 400 mcgVitamin B12 · 6 mcgGreen Tea · 500 mgAlpha-GPC · 50 mg

Caffeine, choline, Alpha-GPC, tyrosine, and huperzine create a direct alertness and neurotransmitter stack. The caffeine amount is suitable for a strong acute effect.

Alpha-GPC and tyrosine are far below common cognitive amounts, while green tea active markers are not disclosed. Caffeine combined with yohimbe may raise anxiety, heart rate, or blood pressure in stimulant-sensitive users.

Study evidence
Alpha-GPC Supportive 15 studies
Choline Supportive 76 studies
Green Tea Supportive 32 studies
Mental Focus
Mental Focus
Impact
High effect
B Goal FitC+ Strength of SupportB- CoverageD+ Formula Quality
Choline · 300 mgFolate · 400 mcgVitamin B6 · 2 mgVitamin B12 · 6 mcgAlpha-GPC · 50 mgCaffeine · 175 mg

A 175 mg caffeine dose provides predictable alertness, while choline, tyrosine, Alpha-GPC, and huperzia target neurotransmitter pathways. Alpha-GPC and tyrosine are lightly dosed, and the label does not quantify active huperzine yield.

The formula covers several focus mechanisms but mixes them with a weight-management stimulant blend. Combining caffeine with 20 mg yohimbe extract may increase anxiety, heart rate, or blood pressure, especially in stimulant-sensitive users.

Study evidence
Alpha-GPC Supportive 1 study
Caffeine Supportive 128 studies
Choline Supportive 22 studies
Fitness
Fitness
Impact
Moderate effect
B Goal FitC- Strength of SupportC- CoverageC- Formula Quality
Caffeine · 175 mg

Caffeine, tyrosine, choline sources, and green tea can increase alertness and training drive. The stimulant amount is clearly disclosed and paired with several focus-oriented ingredients.

Tyrosine and Alpha-GPC are modest, while yohimbe and huperzine active yields are difficult to interpret from the label. Yohimbe combined with caffeine may raise heart rate, anxiety, or blood pressure, especially in stimulant-sensitive users.

Study evidence
Caffeine Supportive 255 studies
Productivity Boost
Productivity Boost
Impact
Moderate effect
B+ Goal FitD Strength of SupportC+ CoverageD- Formula Quality
Vitamin B12 · 6 mcgVitamin B12 · 6 mcgVitamin B6 · 2 mgAlpha-GPC · 50 mgCaffeine · 175 mg

Caffeine provides acute alertness, while choline, Alpha-GPC, tyrosine, and huperzine target neurotransmitter pathways. Green tea and black pepper add secondary stimulant and absorption support.

Caffeine is useful, but tyrosine and Alpha-GPC are far below stronger cognitive amounts. Yohimbe and the unusually large stated huperzine-A amount raise concerns about anxiety, heart rate, blood pressure, and cholinergic side effects.

Study evidence
Alpha-GPC Supportive 2 studies
Caffeine Supportive 108 studies

Ingredients

IngredientAmount per serving
Niacin (Vitamin B3)
 15 mg
Vitamin B6 (Pyridoxine Hydrochloride)
 2 mg
Folic Acid
400 mcg
Vitamin B12 (Methylcobalamin)
 6 mcg
Choline
120 mg
Green Tea leaf extract
500 mg
Choline Bitartrate
300 mg
L-Tyrosine
200 mg
natural Caffeine (Coffee)
 175 mg
Coleus extract
100 mg
Alpha-Glycerolphosphorylcholine powder (Alpha-GPC)
 50 mg
Yohimbe extract
20 mg
Black Pepper extract
5 mg
Huperzia serrata extract (Huperzine A)
 2 mg
Gluten Free Adults 18–50
Report overview
Choline · 120 mg OverallScore81
A+ Active Ingredient Quality & BioavailabilityB Dose, Safety & Label TransparencyD+ Value

A premium brain-oriented choline form strengthens the formula. The elemental amount is moderate and may suit broader combination use. The serving size is practical for daily use.

View ingredientView products
Caffeine (Coffee) · 175 mg OverallScore78
C Active Ingredient Quality & BioavailabilityA Dose, Safety & Label TransparencyB+ Value

Coffee-derived caffeine is clearly quantified at 175 mg, which provides a moderate stimulant amount. Yohimbe adds stimulant risk, but its active yohimbine yield is not disclosed even though the extract weight is listed. The serving cost is favorable, while people sensitive to increased heart rate or blood pressure should treat the yohimbe cautiously.

View ingredientView products
Tyrosine · 200 mg OverallScore50
B- Active Ingredient Quality & BioavailabilityD+ Dose, Safety & Label TransparencyF Value

Standard L-Tyrosine is fully disclosed, but the 200 mg serving is unlikely to provide meaningful cognitive replenishment for most users. No tyrosine-specific sourcing or purity evidence is supplied, and value per gram is poor. Caffeine combined with yohimbe may increase jitteriness or cardiovascular effects in stimulant-sensitive users.

View ingredientView products
Loading alternative details
72 Performance

Genius Consciousness Watermelon

The Genius Brand
<p>Branded Alpha-GPC, phosphatidylserine, acetyl-L-carnitine, tyrosine, and stimulants provide much deeper cognitive support than the original product's lightly dosed focus ingredients. Caffeine plus methyliberine increases stimulant risk, and the huperzine active yield remains unclear.</p>
76 Performance

Total War Tiger's Blood

Redcon1
<p>Citrulline malate, beta-alanine, agmatine, taurine, green tea, and a multi-source stimulant blend provide stronger fitness and energy support. The total caffeine load is high and may worsen anxiety, rapid heartbeat, or sleep disruption in sensitive users.</p>
70 Performance

Animal Fury Green Apple Flavor

Animal
<p>Citrulline, branched-chain amino acids, beta-alanine, tyrosine, and caffeine form a more focused pre-workout than the original mixed weight-management formula. Caffeine is aggressive and the BCAA blend hides individual amino-acid amounts.</p>
59 Budget

Super HD

Cellucor
<p>No supplied candidate has a lower serving cost, but this is the closest-priced option and keeps caffeine plus green tea as the main stimulant core. A hidden thermogenic blend prevents a full safety assessment, so it does not solve the original product's transparency problem.</p>
66 Budget

Green Tea Fat Burner

Applied Nutrition
<p>No supplied candidate is actually cheaper, though this is among the least costly choices and provides concentrated green tea with a moderate stimulant dose. Two vaguely named additions limit full assessment, but the larger supply improves practical value.</p>
57 Budget

Essential AMIN.O. Energy Juicy Strawberry Burst

Optimum Nutrition
<p>No supplied option falls below the original serving cost, but this has one of the lower available costs and uses a modest caffeine dose for lighter energy needs. The amino acids sit inside an opaque blend, so it is less useful for precise performance dosing.</p>
62 Value

Green Tea Fat Burner

Applied Nutrition
<p>Concentrated green tea and a moderate stimulant dose preserve the original product's energy and weight-management purpose in a simpler formula. The supply is shorter and two vaguely named additions reduce transparency, so value is only moderate.</p>
66 Value

Bucked Up Pre-Workout 'Merica Rocket Pop

DAS Labs
<p>Citrulline and caffeine provide a stronger performance foundation, while Alpha-GPC adds some focus support. Beta-alanine and Alpha-GPC are not fully dosed, and numerous small extras add complexity without clearly improving value.</p>
77 Value

Total War Blue Raspberry

Redcon1
<p>Citrulline malate, beta-alanine, agmatine, taurine, green tea, and stimulants provide broad performance support with full key-ingredient amounts. The serving costs more and total caffeine is high, but the disclosed performance core offers clearer value for training-focused users.</p>
Report alternatives

Sources

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

  1. 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
  2. Caffeine administration at night during extended wakefulness effectively mitigates performance impairment but not subjective assessments of fatigue and sleepiness.
    Paech GM; Banks S; Pajcin M; Grant C; Johnson K; Kamimori GH; Vedova CB · Pharmacology, biochemistry, and behavior · 2017
    Randomized trial24 participantsEnergy forCaffeine
  3. 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 pooledCognitive Support forAlpha-GPC
  4. Effect of Choline Alfoscerate on the Progression From Mild Cognitive Impairment to Dementia: Distributed Network Analysis of a Multicenter Korean Database Using a Common Data Model.
    Pyun JM; Lee I; Lee K; Kim MH; Park C; Yang HJ · Dementia and neurocognitive disorders · 2024
    Cohort study3,062 participantsCognitive Support forAlpha-GPC
  5. Green tea extract ingestion, fat oxidation, and glucose tolerance in healthy humans.
    Venables MC; Hulston CJ; Cox HR; Jeukendrup AE · The American journal of clinical nutrition · 2008
    Randomized trial23 participantsMetabolism Boost forGreen Tea
  6. Effects of green tea or green tea extract on insulin sensitivity and glycaemic control in populations at risk of type 2 diabetes mellitus: a systematic review and meta-analysis of randomised controlled trials.
    Wang X; Tian J; Jiang J; Li L; Ying X; Tian H; Nie M · Journal of human nutrition and dietetics : the official journal of the British Dietetic Association · 2015
    Meta-analysis510 participants7 studies pooledMetabolism Boost forGreen Tea
  7. 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 participantsCognitive Support forAlpha-GPC
  8. 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 participantsCognitive Support forAlpha-GPC Cognitive Support forCholine
  9. [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
  10. 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
  11. 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 participantsCognitive Support forCholine
  12. Association of dietary choline intake with incidence of dementia, Alzheimer disease, and mild cognitive impairment: a large population-based prospective cohort study.
    Niu YY; Yan HY; Zhong JF; Diao ZQ; Li J; Li CP; Chen LH; Huang WQ; Xu M; Xu ZT; Liang XF; Li ZH; Liu D · The American journal of clinical nutrition · 2025
    Cohort study125,594 participantsCognitive Support forCholine
  13. Choline intake during pregnancy and child cognition at age 7 years.
    Boeke CE; Gillman MW; Hughes MD; Rifas-Shiman SL; Villamor E; Oken E · American journal of epidemiology · 2013
    Cohort study895 participantsCognitive Support forCholine
  14. Maternal choline supplementation mitigates alcohol exposure effects on neonatal brain volumes.
    Warton FL; Molteno CD; Warton CMR; Wintermark P; Lindinger NM; Dodge NC; Zöllei L; van der Kouwe AJW; Carter RC; Jacobson JL; Jacobson SW; Meintjes EM · Alcoholism, clinical and experimental research · 2022
    Randomized trial52 participantsCognitive Support forCholine
  15. Safety and efficacy of cognitive training plus epigallocatechin-3-gallate in young adults with Down's syndrome (TESDAD): a double-blind, randomised, placebo-controlled, phase 2 trial.
    de la Torre R; de Sola S; Hernandez G; Farré M; Pujol J; Rodriguez J; Espadaler JM; Langohr K; Cuenca-Royo A; Principe A; Xicota L; Janel N; Catuara-Solarz S; Sanchez-Benavides G; Bléhaut H; Dueñas-Espín I; Del Hoyo L; Benejam B; Blanco-Hinojo L; Videla S; Fitó M; Delabar JM; Dierssen M; TESDAD study group · The Lancet. Neurology · 2017
    Randomized trial87 participantsCognitive Support forGreen Tea
  16. Association between tea consumption and risk of cognitive disorders: A dose-response meta-analysis of observational studies.
    Liu X; Du X; Han G; Gao W · Oncotarget · 2018
    Meta-analysis48,435 participants17 studies pooledCognitive Support forGreen Tea
  17. Investigating the Impact of Tea Consumption on Cognitive Function and Exploring Tea-Genetic Interactions in Older Adults Aged 65-105 Years: Findings from the 2002-2018 CLHLS Data.
    Yu L; Yang M; Ye KX; Li C; Zou M; Wang J; Yuan X; Zheng D; Sun C; Zhang Y; Feng Q; Maier AB; Sun L; Feng L; Wang Y; Chen H; Zeng Y · The journal of prevention of Alzheimer's disease · 2024
    Cohort study76,270 participantsCognitive Support forGreen Tea
  18. Consumption of green tea, but not black tea or coffee, is associated with reduced risk of cognitive decline.
    Noguchi-Shinohara M; Yuki S; Dohmoto C; Ikeda Y; Samuraki M; Iwasa K; Yokogawa M; Asai K; Komai K; Nakamura H; Yamada M · PloS one · 2014
    Cohort study490 participantsCognitive Support forGreen Tea
  19. Green Tea Consumption and the Risk of Incident Dementia in Elderly Japanese: The Ohsaki Cohort 2006 Study.
    Tomata Y; Sugiyama K; Kaiho Y; Honkura K; Watanabe T; Zhang S; Sugawara Y; Tsuji I · The American journal of geriatric psychiatry : official journal of the American Association for Geriatric Psychiatry · 2018
    Cohort study13,645 participantsCognitive Support forGreen Tea
  20. 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
  21. 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
  22. 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
  23. 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
  24. 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
  25. 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
  26. 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
  27. 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
  28. 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
  29. Acute Alpha-Glycerylphosphorylcholine Supplementation Enhances Cognitive Performance in Healthy Men.
    Kerksick CM · Nutrients · 2024
    Randomized trial20 participantsMental Focus Productivity Boost forAlpha-GPC
  30. 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
  31. 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
  32. 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
  33. Effects of caffeine on mood and performance: a study of realistic consumption.
    Brice CF; Smith AP · Psychopharmacology · 2003
    Clinical trial24 participantsMental Focus forCaffeine
  34. 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
  35. Four-year follow-up of a randomized controlled trial of choline for neurodevelopment in fetal alcohol spectrum disorder.
    Wozniak JR; Fink BA; Fuglestad AJ; Eckerle JK; Boys CJ; Sandness KE; Radke JP; Miller NC; Lindgren C; Brearley AM; Zeisel SH; Georgieff MK · Journal of neurodevelopmental disorders · 2021
    Randomized trial31 participantsMental Focus forCholine
  36. The relation of dietary choline to cognitive performance and white-matter hyperintensity in the Framingham Offspring Cohort.
    Poly C; Massaro JM; Seshadri S; Wolf PA; Cho E; Krall E; Jacques PF; Au R · The American journal of clinical nutrition · 2012
    Cohort study1,391 participantsMental Focus forCholine
  37. Association between Maternal Choline, Fetal Brain Development, and Child Neurocognition: Systematic Review and Meta-Analysis of Human Studies.
    Obeid R; Derbyshire E; Schön C · Advances in nutrition (Bethesda, Md.) · 2022
    Meta-analysis30 studies pooledMental Focus forCholine
  38. Effect of Choline Supplementation on Neurological, Cognitive, and Behavioral Outcomes in Offspring Arising from Alcohol Exposure During Development: A Quantitative Systematic Review of Clinical and Preclinical Studies.
    Akison LK; Kuo J; Reid N; Boyd RN; Moritz KM · Alcoholism, clinical and experimental research · 2019
    Systematic reviewMental Focus forCholine
  39. Perinatal choline effects on neonatal pathophysiology related to later schizophrenia risk.
    Ross RG; Hunter SK; McCarthy L; Beuler J; Hutchison AK; Wagner BD; Leonard S; Stevens KE; Freedman R · The American journal of psychiatry · 2013
    Randomized trialMental Focus forCholine
  40. 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
  41. 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
  42. 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
  43. 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
  44. 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
  45. Effect of green tea on glucose control and insulin sensitivity: a meta-analysis of 17 randomized controlled trials.
    Liu K; Zhou R; Wang B; Chen K; Shi LY; Zhu JD; Mi MT · The American journal of clinical nutrition · 2013
    Meta-analysis1,133 participants17 studies pooledMetabolism Boost forGreen Tea
  46. Efficacy of a green tea extract rich in catechin polyphenols and caffeine in increasing 24-h energy expenditure and fat oxidation in humans.
    Dulloo AG; Duret C; Rohrer D; Girardier L; Mensi N; Fathi M; Chantre P; Vandermander J · The American journal of clinical nutrition · 1999
    Randomized trial10 participantsMetabolism Boost forGreen Tea
  47. A 60-Day Green Tea Extract Supplementation Counteracts the Dysfunction of Adipose Tissue in Overweight Post-Menopausal and Class I Obese Women.
    Rondanelli M; Gasparri C; Perna S; Petrangolini G; Allegrini P; Fazia T; Bernardinelli L; Cavioni A; Mansueto F; Oberto L; Patelli Z; Tartara A; Riva A · Nutrients · 2022
    Randomized trial28 participantsMetabolism Boost forGreen Tea
  48. Epigallocatechin gallate alleviates non-alcoholic fatty liver disease through the inhibition of the expression and activity of Dipeptide kinase 4.
    Yang M; Yan R; Sha R; Wang X; Zhou S; Li B; Zheng Q; Cao Y · Clinical nutrition (Edinburgh, Scotland) · 2024
    Randomized trialMetabolism Boost forGreen Tea
  49. Treatment of dementia with neurotransmission modulation.
    Doggrell SA; Evans S · Expert opinion on investigational drugs · 2004
    Narrative reviewProductivity Boost forAlpha-GPC
  50. Effects of caffeine on alertness.
    Zwyghuizen-Doorenbos A; Roehrs TA; Lipschutz L; Timms V; Roth T · Psychopharmacology · 1990
    Randomized trial24 participantsProductivity Boost forCaffeine
  51. Effects of Different Sources of Low-Dose Caffeine on Mood/Arousal and Cognitive Performance.
    Irwin C; McCartney D; Grant G; Delang N; Bartrim K; Cox GR; Desbrow B · Perceptual and motor skills · 2023
    Randomized trial22 participantsProductivity Boost forCaffeine
  52. 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
  53. 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
  54. Acute caffeine supplementation as a nutrition-based strategy to mitigate sleep-loss-related cognitive and operational performance impairments in military personnel: a systematic review and meta-analysis.
    Wang R; Wang W; Meng L; Hao G; Gu G · Frontiers in nutrition · 2026
    Meta-analysis7 studies pooledProductivity Boost forCaffeine
  55. Changes in caffeine intake and long-term weight change in men and women.
    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
  56. 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
  57. 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
  58. 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
  59. 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
  60. A green tea extract high in catechins reduces body fat and cardiovascular risks in humans.
    Nagao T; Hase T; Tokimitsu I · Obesity (Silver Spring, Md.) · 2007
    Randomized trial240 participantsWeight Loss forGreen Tea
  61. Green tea beverages enriched with catechins with a galloyl moiety reduce body fat in moderately obese adults: a randomized double-blind placebo-controlled trial.
    Kobayashi M; Kawano T; Ukawa Y; Sagesaka YM; Fukuhara I · Food & function · 2016
    Randomized trial126 participantsWeight Loss forGreen Tea
  62. Green tea catechin consumption enhances exercise-induced abdominal fat loss in overweight and obese adults.
    Maki KC; Reeves MS; Farmer M; Yasunaga K; Matsuo N; Katsuragi Y; Komikado M; Tokimitsu I; Wilder D; Jones F; Blumberg JB; Cartwright Y · The Journal of nutrition · 2009
    Randomized trial132 participantsWeight Loss forGreen Tea
  63. Effect of Decaffeinated Green Tea Polyphenols on Body Fat and Precocious Puberty in Obese Girls: A Randomized Controlled Trial.
    Xie L; Tang Q; Yao D; Gu Q; Zheng H; Wang X; Yu Z; Shen X · Frontiers in endocrinology · 2022
    Randomized trial62 participantsWeight Loss forGreen Tea
  64. Effectiveness of green tea on weight reduction in obese Thais: A randomized, controlled trial.
    Auvichayapat P; Prapochanung M; Tunkamnerdthai O; Sripanidkulchai BO; Auvichayapat N; Thinkhamrop B; Kunhasura S; Wongpratoom S; Sinawat S; Hongprapas P · Physiology & behavior · 2008
    Randomized trial60 participantsWeight Loss forGreen Tea