Product Image

High-Performance Pre-Workout Strawberry Kiwi

Pre JYM
4.9
★ ★ ★ ★ ★
(89 ratings)
Huperzine 50 mcg
Caffeine 300 mg
Alpha-GPC 150 mg
Product Image
Score70
A broadly dosed pre-workout with meaningful performance and focus ingredients. Alpha-GPC source and active yield are weakly specified is the key trade-off alongside a premium serving cost.
How scoring works
Quantity:27 Ounce(s) • (30 servings)
Goals:
Fitness
Energy
Metabolism Boost
Muscle Gain
Mental Focus
Weight Loss
Brain Health
Productivity Boost

Score 70

A broadly dosed pre-workout with meaningful performance and focus ingredients. Alpha-GPC source and active yield are weakly specified is the key trade-off alongside a premium serving cost.
How scoring works
$53.99($1.79 per serving)
iHerb
$ 53.99
Report prices

Analysis

Citrulline malate, creatine HCl, beta-alanine, betaine, taurine, amino acids, tyrosine, and 300 mg caffeine covers pump, training capacity, and energy in one serving. Huperzine A and a small generic Alpha-GPC amount add focus support adds a cognitive component, though stimulant effects will drive much of the immediate experience.

The formula fits energy, fitness, muscle, and productivity goals better than broad brain health. Strong dosing may suit experienced pre-workout users but can be excessive for stimulant-sensitive people.

Most important actives have stated amounts, supporting direct comparison. Alpha-GPC source and active yield are weakly specified remains the main transparency problem, while a premium serving cost weakens practical value.

Who is it for
  • Experienced adults seeking a high-stimulant pre-workout
  • Users wanting pump, training, and focus support together
  • People who can avoid other caffeine sources
Best for
  • Workout energy
  • Training performance
  • Short-term mental focus

Pros

  • Covers several performance pathways
  • Huperzine A and a small generic Alpha-GPC amount add focus support
  • Discloses the main stimulant amount

Cons

  • Alpha-GPC source and active yield are weakly specified
  • a premium serving cost
  • Not suited to caffeine-sensitive users

Warnings

  • The 300 mg caffeine can cause jitteriness, rapid heartbeat, anxiety, or sleep disruption, especially with other stimulants.
  • Beta-alanine commonly causes harmless tingling, while the stimulant load may be harder to tolerate.
  • BioPerine can alter exposure to some medicines by changing their absorption or metabolism.

Nutrient quality

78 High impact

Broad, fully measured performance ingredients provide strong workout, energy, and focus support. Several actives fall below common full amounts, and the strong stimulant-cholinergic stack needs caution.

.

Ingredient transparency

78 High impact

All active amounts are visible and no proprietary blend is used. Complete safety directions, cycling guidance, and inactive flavor-system details remain unavailable.

.

Customer satisfaction

64 Moderate impact

The supplied aggregate satisfaction signal is favorable and has some support from its response volume. Specific experience details are absent, so complaint patterns and purpose fit cannot be confirmed.

.

Value for money

53 Moderate impact

The core fully disclosed pre-workout provides real functional value. Premium serving positioning and uneven dose depth make the product less competitive.

.
Report analysis

Goals

Fitness
Fitness
Impact
Highest effect
A+ Goal FitA Strength of SupportA CoverageA Formula Quality
Creatine · 2 Gram(s)Beta-Alanine · 2 Gram(s)Caffeine · 300 mg

Citrulline malate, creatine HCl, beta-alanine, betaine, taurine, amino acids, and caffeine create broad pre-workout coverage. The formula addresses blood flow, ATP support, acid buffering, hydration-related function, focus, and muscle nutrition.

Citrulline is strong, while beta-alanine, creatine HCl, and betaine sit below common full daily targets. A 300 mg caffeine amount is also strong enough to require caution for stimulant-sensitive users.

Study evidence
Caffeine Supportive 255 studies
Creatine Supportive 143 studies
Taurine Supportive 21 studies
Energy
Physical Stamina
Energy
Impact
Highest effect
A+ Goal FitA- Strength of SupportA CoverageB+ Formula Quality
Potassium · 77 mgCaffeine · 300 mgCreatine · 2 Gram(s)

Caffeine, creatine, beta-alanine, citrulline, tyrosine, and alpha-GPC directly target alertness and exercise performance. Most major actives are individually disclosed at substantial amounts.

The stimulant serving is strong and lacks a balancing calming ingredient such as L-theanine. Several performance actives fall somewhat below common full-dose ranges, and sensitive users may find the caffeine load excessive.

Study evidence
Caffeine Supportive 68 studies
Creatine Supportive 49 studies
Metabolism Boost
Metabolism Boost
Impact
Highest effect
A- Goal FitA- Strength of SupportB- CoverageA- Formula Quality
Creatine · 2 Gram(s)Caffeine · 300 mg

Caffeine directly supports acute energy expenditure, while betaine and a comprehensive pre-workout blend support exercise output. The formula strongly affects stimulant-driven energy but offers little thyroid or insulin-focused support.

The 300 mg caffeine amount is potent and fully disclosed, with meaningful amounts of betaine, citrulline, creatine, amino acids, and taurine. Immediate-release caffeine may cause insomnia, anxiety, palpitations, or increased blood pressure in sensitive users, particularly when combined with other stimulants.

Study evidence
Caffeine Disputed 40 studies
Creatine Supportive 21 studies
Taurine Supportive 11 studies
Muscle Gain
Muscle Gain
Impact
Highest effect
A Goal FitB Strength of SupportA- CoverageB Formula Quality
Creatine · 2 Gram(s)Caffeine · 300 mgBeta-Alanine · 2 Gram(s)

Creatine, citrulline malate, beta-alanine, betaine, leucine, and caffeine cover many pathways that can support productive resistance training. The formula uses substantial amounts for several central actives and includes a complete branched-chain amino acid group.

Creatine hydrochloride, beta-alanine, and betaine are below stronger daily targets, while a high caffeine amount may impair sleep in sensitive users. The large formula also includes amino acids that may be redundant for people already consuming adequate high-quality protein.

Study evidence
Alpha-GPC Not classified 1 study
Caffeine Supportive 31 studies
Creatine Supportive 136 studies
Mental Focus
Mental Focus
Impact
Highest effect
A Goal FitB+ Strength of SupportA- CoverageB- Formula Quality
Alpha-GPC · 150 mgCreatine · 2 Gram(s)Caffeine · 300 mgHuperzine · 50 mcg

Caffeine and a substantial L-tyrosine amount provide direct alertness and neurotransmitter support for demanding tasks. Huperzine A adds acetylcholine preservation, while the generic Alpha-GPC amount is comparatively light.

The cognitive stack is more developed than most pre-workout formulas, though much of the powder serves exercise performance. The strong caffeine serving may cause jitters, rapid heartbeat, or sleep disruption in stimulant-sensitive users.

Study evidence
Alpha-GPC Supportive 1 study
Caffeine Supportive 128 studies
Huperzine Not classified

No linked studies yet.

Weight Loss
Weight Loss
Impact
Highest effect
B Goal FitA- Strength of SupportB CoverageB+ Formula Quality
Creatine · 2 Gram(s)Caffeine · 300 mg

Caffeine may modestly raise thermogenesis and improve workout output, while creatine and amino acids can support training performance during a calorie deficit. Several performance ingredients are supplied at substantial amounts.

The formula does not directly manage hunger and its immediate-release caffeine is strong for one serving. Weight-management value depends mainly on better training consistency rather than a direct fat-loss effect.

Study evidence
Caffeine Disputed 14 studies
Creatine No effect 27 studies

Ingredients

IngredientAmount per serving
Calories
80 Calorie(s)
Sodium
10 mg
Total Carbohydrates
3 Gram(s)
Calcium
52 mg
Potassium
77 mg
Creatine HCl
2 Gram(s)
Beta-Alanine
2 Gram(s)
Betaine (Trimethylglycine)
 1.5 Gram(s)
Taurine
1 Gram(s)
Alpha-Glyceryl Phosphoryl Choline
150 mg
Citrulline Malate
6 Gram(s)
Beet root extract
500 mg
L-Leucine
3 Gram(s)
L-Isoleucine
1.5 Gram(s)
L-Valine
1.5 Gram(s)
L-Tyrosine
1.5 Gram(s)
Caffeine Anhydrous
300 mg
Huperzine A (Toothed Clubmoss extract)
 50 mcg
BioPerine (Black Pepper Fruit Extract)
 5 mg
Adults 18–50 Women
Report overview
Huperzine (Toothed Clubmoss extract) · 50 mcg OverallScore75
C+ Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyB- Value

Huperzine A is tied to toothed clubmoss and supplied at a clearly effective amount. The missing standardization percentage and large powder scoop keep source verification and dose precision below ideal. Alpha-GPC adds useful stack value, but no cycling guidance addresses long-half-life accumulation.

View ingredientView products
Caffeine · 300 mg OverallScore69
B Active Ingredient Quality & BioavailabilityA Dose, Safety & Label TransparencyF Value

Caffeine anhydrous provides a pure and standardized source, but no modified-release technology is used. The 300 mg serving is transparent and strong. A very high serving cost produces poor value for an immediate-release-only formula.

View ingredientView products
Alpha-GPC · 150 mg OverallScore30
F Active Ingredient Quality & BioavailabilityF Dose, Safety & Label TransparencyF Value

Generic Alpha-GPC is listed at 150 mg without source or active-yield clarification. Assuming 50% yield, the estimated 75 mg active amount falls below the preferred range. The included 300 mg caffeine may cause jitteriness or disrupt sleep, especially in stimulant-sensitive users.

View ingredientView products
Loading alternative details
77 Performance

Pulse Fruit Punch

Legion
<p>A deeper performance formula combines citrulline malate, beta-alanine, betaine, Alpha-GPC, theanine, and caffeine at disclosed amounts. It provides stronger pump, endurance, and focus coverage than the original, although the high caffeine amount may not suit stimulant-sensitive users.</p>
79 Performance

High-Performance Pre-Workout Pineapple Strawberry

Pre JYM
<p>A broad, fully disclosed formula adds citrulline malate, creatine HCl, beta-alanine, betaine, taurine, branched-chain amino acids, tyrosine, Alpha-GPC, caffeine, and huperzine. It covers more aspects of workout performance and focus than the original, though its caffeine amount remains high.</p>
72 Performance

Genius Consciousness Watermelon

The Genius Brand
<p>A focused cognitive blend supplies Alpha-GPC, acetyl-L-carnitine, lion’s mane, tyrosine, phosphatidylserine, caffeine, and methyliberine. It is a better choice when mental focus is the priority, but it does not replace the original’s pump or muscular-performance ingredients.</p>
75 Budget

Hydroxycut Hardcore Super Elite

MuscleTech
<p>A much lower serving cost comes with caffeine, choline, green coffee extract, alpha-lipoic acid, and huperzine for energy and metabolism support. It lacks the original-style citrulline, beta-alanine, and creatine foundation, so it is a better budget fit when stimulation matters more than complete workout support.</p>
72 Budget

Seventh Gear Your Mom's Lemonade

Axe & Sledge Supplements
<p>A lower serving cost retains beta-alanine, betaine, creatine, Alpha-GPC, huperzine, and several stimulant forms. The performance ingredients are modestly dosed, but the formula keeps useful energy and focus coverage while improving cost efficiency.</p>
80 Budget

High-Performance Pre-Workout Rainbow Sherbet

Pre JYM
<p>The lower serving cost includes disclosed citrulline malate, creatine HCl, beta-alanine, betaine, taurine, amino acids, tyrosine, Alpha-GPC, caffeine, and huperzine. That broad formula supports training, energy, and focus without giving up the main functions of the original.</p>
78 Value

High-Performance Pre-Workout Tangerine

Pre JYM
<p>A lower serving cost buys a fully disclosed mix of citrulline malate, creatine HCl, beta-alanine, betaine, taurine, amino acids, tyrosine, Alpha-GPC, caffeine, and huperzine. The broad training and focus coverage makes it a stronger value than the original, with high caffeine as the main caution.</p>
66 Value

Bucked Up Pre-Workout 'Merica Rocket Pop

DAS Labs
<p>A lower serving cost still provides citrulline malate, beta-alanine, caffeine, Alpha-GPC, and taurine in a disclosed formula. Citrulline supports its value for pump-focused training, while the lighter beta-alanine and Alpha-GPC amounts are meaningful trade-offs.</p>
66 Value

Pre-Workout Blood Raz

Bucked Up
<p>A more economical serving retains citrulline malate, beta-alanine, caffeine, Alpha-GPC, and taurine for pump, energy, and focus. The formula is less comprehensive than the strongest candidates, but its disclosed core ingredients make it a practical value alternative to the original.</p>
Report alternatives

Sources

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

  1. 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 Brain Health forAlpha-GPC
  2. 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
  3. Efficacy and safety of natural acetylcholinesterase inhibitor huperzine A in the treatment of Alzheimer's disease: an updated meta-analysis.
    Wang BS; Wang H; Wei ZH; Song YY; Zhang L; Chen HZ · Journal of neural transmission (Vienna, Austria : 1996) · 2009
    Meta-analysis4 studies pooledCognitive Support forHuperzine
  4. A phase II trial of huperzine A in mild to moderate Alzheimer disease.
    Rafii MS; Walsh S; Little JT; Behan K; Reynolds B; Ward C; Jin S; Thomas R; Aisen PS; Alzheimer's Disease Cooperative Study · Neurology · 2011
    Randomized trial210 participantsCognitive Support forHuperzine
  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. 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
  7. Acute Alpha-Glycerylphosphorylcholine Supplementation Enhances Cognitive Performance in Healthy Men.
    Kerksick CM · Nutrients · 2024
    Randomized trial20 participantsBrain Health Mental Focus Productivity Boost forAlpha-GPC
  8. 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
  9. 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
  10. [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
  11. 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
  12. 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
  13. 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
  14. 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
  15. 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
  16. 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
  17. 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
  18. 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
  19. [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
  20. 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
  21. 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
  22. [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
  23. 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
  24. 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
  25. 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
  26. 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
  27. 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
  28. Synergistic effects of creatine, carbs, protein on repeated sprint performance.
    Wang Y; Wei H; Cheng X; Chen Z · Scientific reports · 2026
    Randomized trial60 participantsEnergy forCreatine
  29. The Effects of Creatine Monohydrate Supplementation on Recovery from Eccentric Exercise-Induced Muscle Damage: A Double-Blind, Randomized, Placebo-Controlled Trial Considering Sex and Age Differences.
    Yamaguchi S; Inami T; Nishioka T; Morito A; Ishiyama K; Murayama M · Nutrients · 2025
    Randomized trial40 participantsEnergy forCreatine
  30. The Effect of Prior Creatine Intake for 28 Days on Accelerated Recovery from Exercise-Induced Muscle Damage: A Double-Blind, Randomized, Placebo-Controlled Trial.
    Yamaguchi S; Inami T; Ishida H; Morito A; Yamada S; Nagata N; Murayama M · Nutrients · 2024
    Randomized trial20 participantsEnergy forCreatine
  31. Creatine supplementation attenuates the rate of fatigue development during intermittent isometric exercise performed above end-test torque.
    Abdalla LHP; Broxterman RM; Greco CC; Denadai BS · Experimental physiology · 2021
    Randomized trial16 participantsEnergy forCreatine
  32. The effect of continuous low dose creatine supplementation on force, power, and total work.
    Burke DG; Silver S; Holt LE; Smith Palmer T; Culligan CJ; Chilibeck PD · International journal of sport nutrition and exercise metabolism · 2000
    Randomized trial41 participantsEnergy forCreatine
  33. 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
  34. 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
  35. 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
  36. 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
  37. 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
  38. Creatine in combination with resistance training and improvement in muscle strength: evaluation of a health claim pursuant to Article 13(5) of Regulation (EC) No 1924/2006.
    EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA) · EFSA journal. European Food Safety Authority · 2026
    Guideline / consensusFitness forCreatine
  39. Effect of creatine and weight training on muscle creatine and performance in vegetarians.
    Burke DG; Chilibeck PD; Parise G; Candow DG; Mahoney D; Tarnopolsky M · Medicine and science in sports and exercise · 2004
    Randomized trial42 participantsFitness forCreatine
  40. Long-term creatine intake is beneficial to muscle performance during resistance training.
    Vandenberghe K; Goris M; Van Hecke P; Van Leemputte M; Vangerven L; Hespel P · Journal of applied physiology (Bethesda, Md. : 1985) · 1998
    Randomized trial19 participantsFitness forCreatine
  41. Effects of Combined Versus Single Supplementation of Creatine, Beta-Alanine, and L-Citrulline During Short Sprint Interval Training on Basketball Players' Performance: A Double-Blind Randomized Placebo-Controlled Trial.
    Li M; Sheykhlouvand M · International journal of sports physiology and performance · 2025
    Randomized trial48 participantsFitness forCreatine
  42. The Additive Effects of Creatine Supplementation and Exercise Training in an Aging Population: A Systematic Review of Randomized Controlled Trials.
    Stares A; Bains M · Journal of geriatric physical therapy (2001) · 2021
    Systematic review17 studies pooledFitness forCreatine
  43. Taurine supplementation enhances anaerobic power in elite speed skaters: A double-blind, randomized, placebo-controlled, crossover study.
    Buzdağlı Y; Eyipınar CD; Öget F; Şıktar E; Forbes SC; Tekin A · Biology of sport · 2023
    Randomized trial30 participantsFitness forTaurine
  44. The effect of acute taurine ingestion on 3-km running performance in trained middle-distance runners.
    Balshaw TG; Bampouras TM; Barry TJ; Sparks SA · Amino acids · 2013
    Randomized trial8 participantsFitness forTaurine
  45. Effects of different doses of taurine supplementation on repeated-sprint performance after exhaustive exercise in a high temperature and humidity environment.
    Cheng X; Lin Y; Li Z · Frontiers in nutrition · 2026
    Randomized trial16 participantsFitness forTaurine
  46. Oral taurine improves critical power and severe-intensity exercise tolerance.
    Waldron M; Patterson SD; Jeffries O · Amino acids · 2020
    Randomized trial12 participantsFitness forTaurine
  47. Acute taurine supplementation enhances thermoregulation and endurance cycling performance in the heat.
    Page LK; Jeffries O; Waldron M · European journal of sport science · 2019
    Randomized trial11 participantsFitness forTaurine
  48. 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
  49. 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
  50. 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
  51. Effects of caffeine on mood and performance: a study of realistic consumption.
    Brice CF; Smith AP · Psychopharmacology · 2003
    Clinical trial24 participantsMental Focus forCaffeine
  52. 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
  53. 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
  54. 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
  55. 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
  56. 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
  57. 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
  58. Creatine target engagement with brain bioenergetics: a dose-ranging phosphorus-31 magnetic resonance spectroscopy study of adolescent females with SSRI-resistant depression.
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    Randomized trial32 participantsWeight Loss forCreatine