Product Image

LFG Burn Tropical

Bucked Up
4.8
★ ★ ★ ★ ★
(11 ratings)
Caffeine 300 mg
Huperzine 200 mcg
Alpha-GPC 200 mg
Product Image
Score54
A broadly dosed pre-workout with meaningful performance and focus ingredients. Duplicate 300 mg caffeine entries make the true total uncertain despite related scoring that interprets a 300 mg total is the key trade-off alongside a very high serving cost.
How scoring works
Quantity:10 Ounce(s) • (30 servings)
Goals:
Fitness
Metabolism Boost
Productivity Boost
Energy
Weight Loss
Mental Focus
Brain Health

Score 54

A broadly dosed pre-workout with meaningful performance and focus ingredients. Duplicate 300 mg caffeine entries make the true total uncertain despite related scoring that interprets a 300 mg total is the key trade-off alongside a very high serving cost.
How scoring works
$49.95($1.66 per serving)
iHerb
$ 54.95
Vitacost
$ 54.99
Nutrition Faktory
$ 49.95
Report prices

Analysis

Beta-alanine, Nitrosigine, staged caffeine, MitoBurn, AlphaSize, mucuna, grains of paradise, and Huperzine A covers pump, training capacity, and energy in one serving. Branded AlphaSize and Huperzine A 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. Duplicate 300 mg caffeine entries make the true total uncertain despite related scoring that interprets a 300 mg total remains the main transparency problem, while a very high 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
  • Branded AlphaSize and Huperzine A add focus support
  • Discloses the main stimulant amount

Cons

  • Duplicate 300 mg caffeine entries make the true total uncertain despite related scoring that interprets a 300 mg total
  • a very high serving cost
  • Not suited to caffeine-sensitive users

Warnings

  • The possible combined 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.
  • Mucuna supplies L-Dopa and can interact with levodopa, antipsychotics, and other dopamine-active medicines.

Nutrient quality

61 Moderate impact

Strong performance forms and meaningful core doses create substantial acute workout support. Dual caffeine entries imply excessive exposure, while modest cognitive doses and numerous extras reduce balance.

.

Ingredient transparency

68 High impact

Listed actives generally have amounts and no proprietary blend conceals them. Duplicate caffeine labeling, missing cycling guidance, and absent excipient details create serious clarity gaps.

.

Customer satisfaction

58 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.

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Value for money

22 Situational impact

Some core performance formula value is present. High serving positioning and major formulation weaknesses make the product uncompetitive.

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Report analysis

Goals

Fitness
Strength and Power Output
Fitness
Impact
Highest effect
A Goal FitA Strength of SupportA- CoverageB+ Formula Quality
Beta-Alanine · 3200 mgCaffeine · 300 mg

Beta-alanine and Nitrosigine provide established acid-buffering and blood-flow support at practical amounts. A staged 300 mg caffeine system and several focus ingredients add strong training drive.

The stimulant amount is high and may not suit caffeine-sensitive users or late-day sessions. Smaller thermogenic and cognitive additions broaden the formula but contribute less than the core pre-workout actives.

Study evidence
Caffeine Supportive 255 studies
Metabolism Boost
Metabolism Boost
Impact
Highest effect
A Goal FitA Strength of SupportB- CoverageB Formula Quality
Caffeine · 300 mg

A strong caffeine dose directly supports acute energy expenditure, with beta-aminoisobutyric acid and grains of paradise adding less proven thermogenic support. The exercise blend is focused on stimulant-driven performance rather than broad metabolic health.

The 300 mg total caffeine amount is transparent and combines immediate with microencapsulated delivery. Caffeine-sensitive users may experience insomnia, anxiety, palpitations, or increased blood pressure, especially if they add coffee or another stimulant.

Study evidence
Caffeine Disputed 40 studies
Productivity Boost
Productivity Boost
Impact
Highest effect
A- Goal FitB Strength of SupportB CoverageB+ Formula Quality
Huperzine · 200 mcgAlpha-GPC · 200 mgCaffeine · 300 mg

Huperzine, Caffeine, and Alpha-GPC provide a clear foundation for productivity support. Some relevant amounts are useful, while others are better suited to basic support.

Coverage spans alertness, cognition, stress response, or fatigue resistance. The strong caffeine load may cause jitteriness, a faster heart rate, or disrupted sleep in stimulant-sensitive users.

Study evidence
Alpha-GPC Supportive 2 studies
Caffeine Supportive 108 studies
Huperzine No effect 1 study
Energy
Physical Stamina
Energy
Impact
High effect
A Goal FitA- Strength of SupportB CoverageD Formula Quality
Caffeine · 300 mg

High caffeine, beta-alanine, arginine silicate, and focus-oriented compounds directly target alertness and workout performance. The label discloses all active amounts and distinguishes immediate and delayed caffeine forms.

The total stimulant load is high and may cause jitteriness, sleep disruption, or a fast heartbeat. Multiple stimulating and neurotransmitter-active compounds make the formula aggressive and less balanced than a caffeine-theanine design.

Study evidence
Caffeine Supportive 68 studies
Weight Loss
Weight Loss
Impact
High effect
B+ Goal FitA- Strength of SupportB- CoverageC+ Formula Quality
Caffeine · 300 mg

A strong caffeine amount directly targets thermogenesis and workout intensity. Beta-alanine and arginine silicate support training capacity, while staged caffeine may extend stimulation.

Evidence for caffeine is stronger for short-term performance than for meaningful long-term fat loss, and the branded specialty ingredients add uncertain value. The high stimulant load may cause jitters or sleep disruption, which can undermine appetite regulation and recovery.

Study evidence
Caffeine Disputed 14 studies
Mental Focus
Mental Focus
Impact
High effect
A- Goal FitB Strength of SupportB CoverageC- Formula Quality
Alpha-GPC · 200 mgCaffeine · 300 mgHuperzine · 200 mcg

Caffeine, Alpha-GPC, huperzine A, and mucuna create a potent acute alertness and acetylcholine stack. The caffeine and huperzine amounts are strong, while the Alpha-GPC active yield appears modest.

Workout ingredients add physical-performance support but make the formula less streamlined for cognitive use alone. The heavy caffeine load may cause jitters, rapid heartbeat, or insomnia, and regular huperzine use warrants cycling guidance.

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

No linked studies yet.

Ingredients

IngredientAmount per serving
Sodium (Himalayan Rock Salt, Sodium Citrate)
 80 mg
Beta-Alanine
3200 mg
Nitrosigine (Inositol-Stabilized Arginine Silicate)
 1500 mg
Caffeine (Caffeine Anhydrous, Caffeine Anhydrous, Microencapsulated)
 300 mg
MitoBurn (Beta-Aminoisobutyric Acid)
 250 mg
AlphaSize Alpha GPC
200 mg
Mucuna pruriens extract (L-Dopa)
 100 mg
AstraGin (Astragalus membranaceous, Panax notoginseng)
 25 mg
Paradoxine (Grains of Paradise)
 10 mg
Huperzine A
200 mcg
Adults 18–50 Women
Report overview
Caffeine (Caffeine Anhydrous, Caffeine Anhydrous, Microencapsulated) · 300 mg OverallScore79
A+ Active Ingredient Quality & BioavailabilityA Dose, Safety & Label TransparencyF Value

Caffeine anhydrous offers strong source purity, and microencapsulated caffeine adds staged release. The 300 mg total is transparent but strong for a single serving. Very high serving cost limits value even with the advanced delivery profile.

View ingredientView products
Huperzine · 200 mcg OverallScore63
F Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyB- Value

The Huperzine A amount is clear and falls within the usual focus range, but no botanical source or extract standardization is given. A large powder scoop is less precise than a capsule for a microgram-level alkaloid. Branded Alpha-GPC adds meaningful stack value, though cycling guidance is absent.

View ingredientView products
Alpha-GPC · 200 mg OverallScore50
C+ Active Ingredient Quality & BioavailabilityF Dose, Safety & Label TransparencyD- Value

AlphaSize provides a recognized branded form, but the listed 200 mg does not clarify active yield. Assuming 50% yield, the estimated 100 mg active amount falls below the preferred range. The two listed 300 mg caffeine forms create a very high stimulant load that may increase jitteriness, heart rate, or insomnia.

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. 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. A critical review of caffeine withdrawal: empirical validation of symptoms and signs, incidence, severity, and associated features.
    Juliano LM; Griffiths RR · Psychopharmacology · 2005
    Systematic review66 studies pooledEnergy forCaffeine
  3. 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
  4. Acute Effects of Caffeine Supplementation on Physical Performance, Physiological Responses, Perceived Exertion, and Technical-Tactical Skills in Combat Sports: A Systematic Review and Meta-Analysis.
    Delleli S; Ouergui I; Messaoudi H; Trabelsi K; Ammar A; Glenn JM; Chtourou H · Nutrients · 2022
    Meta-analysis26 studies pooledFitness forCaffeine
  5. 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
  6. [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
  7. Effect of Huperzine A on Cognitive Function and Perception of Effort during Exercise: A Randomized Double-Blind Crossover Trial.
    Wessinger CM; Inman CL; Weinstock J; Weiss EP · International journal of exercise science · 2025
    Randomized trial15 participantsBrain Health Productivity Boost forHuperzine
  8. 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 Brain Health forAlpha-GPC
  9. 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
  10. 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 pooledCognitive Support Brain Health forHuperzine
  11. Huperzine A for vascular dementia.
    Hao Z; Liu M; Liu Z; Lv D · The Cochrane database of systematic reviews · 2009
    Systematic review14 participants1 studies pooledCognitive Support forHuperzine
  12. 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
  13. 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
  14. Acute Alpha-Glycerylphosphorylcholine Supplementation Enhances Cognitive Performance in Healthy Men.
    Kerksick CM · Nutrients · 2024
    Randomized trial20 participantsBrain Health Mental Focus Productivity Boost forAlpha-GPC
  15. 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
  16. 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
  17. 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
  18. [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
  19. 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
  20. 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
  21. [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
  22. 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
  23. 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
  24. 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
  25. 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
  26. 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
  27. 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
  28. 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
  29. 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
  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. 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
  36. 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
  37. 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
  38. 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
  39. 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
  40. The effect of 6 days of alpha glycerylphosphorylcholine on isometric strength
    David Bellar, Nina R LeBlanc, Brian Campbell · Journal of the International Society of Sports Nutrition · 2015
    Randomized trial13 participantsMuscle Gain forAlpha-GPC
  41. Effects of Acute Ingestion of Caffeine Capsules on Muscle Strength and Muscle Endurance: A Systematic Review and Meta-Analysis.
    Wu W; Chen Z; Zhou H; Wang L; Li X; Lv Y; Sun T; Yu L · Nutrients · 2024
    Meta-analysis14 studies pooledMuscle Gain forCaffeine
  42. Acute caffeine intake improves muscular strength, power, and endurance performance, reversing the time-of-day effect regardless of muscle activation level in resistance-trained males: a randomized controlled trial.
    Montalvo-Alonso JJ; Del Val-Manzano M; Cerezo-Telléz E; Ferragut C; Valadés D; Rodríguez-Falces J; Pérez-López A · European journal of applied physiology · 2025
    Randomized trial13 participantsMuscle Gain forCaffeine
  43. Wake up and smell the coffee: caffeine supplementation and exercise performance-an umbrella review of 21 published meta-analyses.
    Grgic J; Grgic I; Pickering C; Schoenfeld BJ; Bishop DJ; Pedisic Z · British journal of sports medicine · 2020
    Systematic review21 studies pooledMuscle Gain forCaffeine
  44. Effects of caffeine intake on muscle strength and power: a systematic review and meta-analysis.
    Grgic J; Trexler ET; Lazinica B; Pedisic Z · Journal of the International Society of Sports Nutrition · 2018
    Meta-analysis20 studies pooledMuscle Gain forCaffeine
  45. Caffeine increases strength and power performance in resistance-trained females during early follicular phase.
    Norum M; Risvang LC; Bjørnsen T; Dimitriou L; Rønning PO; Bjørgen M; Raastad T · Scandinavian journal of medicine & science in sports · 2021
    Randomized trial15 participantsMuscle Gain forCaffeine
  46. Treatment of dementia with neurotransmission modulation.
    Doggrell SA; Evans S · Expert opinion on investigational drugs · 2004
    Narrative reviewProductivity Boost forAlpha-GPC
  47. Effects of caffeine on alertness.
    Zwyghuizen-Doorenbos A; Roehrs TA; Lipschutz L; Timms V; Roth T · Psychopharmacology · 1990
    Randomized trial24 participantsProductivity Boost forCaffeine
  48. 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
  49. 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
  50. 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
  51. 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
  52. 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
  53. 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
  54. 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
  55. 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
  56. 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