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Total War Tiger's Blood

Redcon1
4.3
★ ★ ★ ★ ★
(1617 ratings)
Caffeine 250 mg
Green Tea 45 mg
Product Image
Score76
Strong pump and endurance ingredients make this a capable pre-workout, but the combined caffeine amount is aggressive. It suits experienced stimulant users who can keep all other caffeine low.
How scoring works
Quantity:15 Ounce(s) • (30 servings)
Goals:
Fitness
Energy
Muscle Gain
Metabolism Boost
Weight Loss
Productivity Boost

Score 76

Strong pump and endurance ingredients make this a capable pre-workout, but the combined caffeine amount is aggressive. It suits experienced stimulant users who can keep all other caffeine low.
How scoring works

Also available as

3 options
Green Apple Green Tea 45 mg, Caffeine 250 mg • 15 Ounce(s) • 30 servings $27.99 ($0.93 per serving) Blue Raspberry Green Tea 45 mg, Caffeine 250 mg • 15 Ounce(s) • 30 servings $27.99 ($0.93 per serving) Sour Gummy Bear Green Tea 45 mg, Caffeine 250 mg • 15 Ounce(s) • 30 servings $33.74 ($1.12 per serving)
$25.99($0.86 per serving)
iHerb
$ 33.74
Amazon
$ 25.99
BodyBuilding.com
$ 44.99
Report prices

Analysis

The performance base includes 6 g of citrulline malate, 3.2 g of beta-alanine, 1 g of agmatine sulfate, and 1 g of taurine. That profile is directly aligned with workout pump and endurance rather than weight loss or muscle gain on its own.

Caffeine anhydrous and di-caffeine malate total 350 mg by their listed weights, with a small theobromine addition. The separate entries require manual addition and leave little room for coffee, energy drinks, or another pre-workout on the same day.

Green tea is a minor component with no disclosed EGCG yield, so it should not drive the purchase decision. The formula offers useful performance dosing for experienced stimulant users, but the aggressive energy profile sharply narrows suitability.

Who is it for
  • Experienced pre-workout users with good stimulant tolerance
  • Adults seeking pump, endurance, and acute energy support
  • People who train early enough to protect sleep
Best for
  • High-stimulation workouts
  • Pump-focused training sessions
  • Combining beta-alanine with citrulline and agmatine

Pros

  • Provides 6 g of citrulline malate
  • Uses the established 3.2 g beta-alanine amount
  • Adds meaningful agmatine and taurine
  • Discloses individual performance ingredients
  • Combines immediate and malate-bound caffeine

Cons

  • The caffeine sources total a very high amount
  • The caffeine total is not presented as one clear figure
  • Green tea lacks an EGCG yield
  • The formula is poorly suited to caffeine-sensitive users
  • Weight-loss and muscle-gain relevance is indirect

Warnings

  • The combined caffeine sources may cause jitters, rapid heartbeat, anxiety, nausea, or sleep disruption.
  • Do not combine a full serving with other caffeine or stimulant products.
  • Beta-alanine commonly causes temporary skin tingling, which can feel intense but is usually short-lived.
  • BioPerine may alter absorption of some medicines; review medication compatibility before use.

Nutrient quality

82 Highest impact

Caffeine anhydrous, di-caffeine malate, BioPerine, and clearly named amino compounds use recognizable forms. The main performance ingredients are present at substantial, practical amounts.

Ingredient transparency

76 High impact

Every listed active has a specific amount. Flavoring, sweeteners, and other inactive powder ingredients are not included.

Customer satisfaction

63 Moderate impact

The supplied aggregate rating is solid but not exceptional, and no experience details are provided. No specific feedback is supplied, so recurring complaints cannot be assessed.

Value for money

82 Highest impact

The well-dosed performance formula provides good quality for its cost. The serving cost is moderate for the substantial performance doses.

Report analysis

Goals

Fitness
Fitness
Impact
Highest effect
A+ Goal FitA Strength of SupportA- CoverageB+ Formula Quality
Beta-Alanine · 3.2 Gram(s)Caffeine · 100 mg

Citrulline malate, beta-alanine, taurine, and caffeine cover blood flow, muscular endurance, hydration, and acute drive. Their disclosed amounts make the blend strongly aligned with demanding workouts.

Agmatine adds related pump support, while several minor extracts play smaller roles. The combined 350 mg caffeine load is very high and may cause jitters, a rapid heartbeat, or sleep disruption, especially with other caffeine that day.

Study evidence
Caffeine Supportive 255 studies
Taurine Supportive 21 studies
Energy
Energy
Impact
Highest effect
A+ Goal FitA Strength of SupportA- CoverageB Formula Quality
Caffeine · 100 mg

Caffeine provides strong acute alertness, while beta-alanine, citrulline malate, agmatine, and taurine support workout stamina. The core performance ingredients are supplied at substantial and clearly stated amounts.

Two caffeine sources provide 350 mg in one serving, creating a very high stimulant load. That amount may cause anxiety, palpitations, sleep disruption, or increased blood pressure and leaves little room for other caffeine that day.

Study evidence
Caffeine Supportive 68 studies
Muscle Gain
Muscle Gain
Impact
Highest effect
A- Goal FitA- Strength of SupportA- CoverageB+ Formula Quality
Caffeine · 100 mgBeta-Alanine · 3.2 Gram(s)

Citrulline malate, beta-alanine, agmatine, taurine, and caffeine provide strong support for training volume, fatigue buffering, pumps, and workout drive. Beta-alanine reaches a well-supported daily amount, while the six-gram citrulline-malate entry gives useful nitric-oxide support despite unclear citrulline yield.

Most core ergogenics are individually quantified and logically combined without a proprietary matrix. Combined caffeine sources may produce a strong stimulant load that can raise heart rate or disrupt sleep, while beta-alanine may cause harmless tingling.

Study evidence
Caffeine Supportive 31 studies
Taurine Not classified

No linked studies yet.

Metabolism Boost
Metabolism Boost
Impact
High effect
B+ Goal FitB Strength of SupportC+ CoverageC Formula Quality
Green Tea · 45 mgCaffeine · 100 mg

The high caffeine load directly supports thermogenesis, while a small green tea extract adds limited secondary support. Clear caffeine-source amounts make the main metabolic driver easy to identify.

Most other ingredients target workout performance or blood flow rather than metabolism, so the broader label adds little pathway coverage. The combined caffeine forms provide a very high stimulant load that may cause jitteriness, sleep disruption, or a rapid heartbeat.

Study evidence
Caffeine Disputed 40 studies
Green Tea Supportive 31 studies
Taurine Supportive 11 studies
Weight Loss
Weight Loss
Impact
High effect
B- Goal FitB Strength of SupportC- CoverageC Formula Quality
Green Tea · 45 mgCaffeine · 100 mg

A large dual-source caffeine load may raise energy expenditure and improve training output, giving the formula a direct but stimulant-heavy weight-management role. The small green tea component adds little confidence because its EGCG yield is not disclosed.

The pre-workout actives support exercise performance more than appetite control or sustained weight management. The combined caffeine amount may cause jitters, rapid heartbeat, or sleep disruption, especially when used with other caffeine sources.

Study evidence
Caffeine Disputed 14 studies
Green Tea Supportive 42 studies
Productivity Boost
Productivity Boost
Impact
High effect
B- Goal FitB Strength of SupportC CoverageD Formula Quality
Caffeine · 100 mg

Caffeine can provide strong short-term alertness, while taurine may modestly support the stimulant experience. The formula is primarily a pre-workout built around circulation and exercise performance rather than desk-based focus.

Combined caffeine sources create a high stimulant load without theanine or another clear calming counterbalance. Citrulline, beta-alanine, agmatine, juniper, and absorption aids add little direct cognitive value and may bring distracting physical sensations.

Study evidence
Caffeine Supportive 108 studies
Mental Focus
Mental Focus
Impact
Moderate effect
B Goal FitC Strength of SupportD- CoverageF Formula Quality
Caffeine · 100 mg

The very high combined caffeine amount can create strong alertness, but it is not balanced for calm or sustained mental focus. Most other ingredients target blood flow and workout endurance rather than cognition.

Separate immediate and malate caffeine forms may vary the stimulant curve, yet the total remains intense. Avoid other caffeine on the same day because the serving leaves little room below the usual adult daily limit and may cause jitters or sleep disruption.

Study evidence
Caffeine Supportive 128 studies

Ingredients

IngredientAmount per serving
Citrulline Malate (L-Citrulline, Malic Acid)
 6 Gram(s)
Beta-Alanine
3.2 Gram(s)
Agmatine Sulfate
1 Gram(s)
Taurine
1 Gram(s)
Caffeine Anhydrous
250 mg
Juniper extract
150 mg
Di-Caffeine Malate
100 mg
Green Tea extract (Polyphenols)
 45 mg
Naringin
25 mg
BioPerine
10 mg
Theobroma cocoa (seed) extract (Theobromine)
 5 mg
Adults 18–50 Women
Report overview
Caffeine · 250 mg OverallScore72
A+ Active Ingredient Quality & BioavailabilityC Dose, Safety & Label TransparencyD- Value

The blend combines immediate caffeine anhydrous with di-caffeine malate for a more varied release profile. The listed caffeine sources total 350 mg per scoop, creating a very high stimulant load that leaves little room for other caffeine that day. The serving cost is above the collection median, so value depends heavily on wanting the broader pre-workout blend.

View ingredientView products
Green Tea (Polyphenols) · 45 mg OverallScore28
F Active Ingredient Quality & BioavailabilityD- Dose, Safety & Label TransparencyF Value

The green tea component is a minor part of a stimulant-heavy pre-workout and lacks disclosed EGCG content. BioPerine may improve absorption, but it cannot make up for the unclear active catechin dose. The combined caffeine sources create a substantial stimulant burden that may cause jitters, sleep disruption, or a rapid heartbeat in sensitive users.

View ingredientView products
Loading alternative details
83 Performance

TheanineUP Focused Energy

California Gold Nutrition
<p>It offers a clearer ingredient trade-off because 100 mg each of caffeine and L-theanine creates a balanced focus pairing, with matcha and cocoa adding mild support. It may still disrupt sleep in sensitive users and does not replace pump ingredients in a full pre-workout.</p>
84 Performance

L-Theanine & Caffeine

SR Sports Research
<p>It offers a clearer ingredient trade-off because 200 mg of L-theanine paired with 100 mg of green-coffee caffeine supports alertness with a gentler stimulant balance. It does not provide citrulline, beta-alanine, or other workout-performance ingredients.</p>
84 Performance

EGCg Green Tea Extract

Protocol For Life Balance
<p>It offers a clearer ingredient trade-off because 400 mg of decaffeinated green tea extract clearly identifies a substantial catechin and EGCG profile. It offers no stimulant energy, and high-EGCG extract may cause nausea or rare liver injury when taken fasting.</p>
87 Budget

Caffeine 200 mg

ALLMAX
<p>It lowers recurring cost while 200 mg of clearly disclosed caffeine provides straightforward short-term energy and focus. The immediate-release formula may cause jitters or sleep disruption and offers little beyond stimulation.</p>
84 Budget

EGCg Green Tea Extract 400 mg

NOW
<p>It lowers recurring cost while 400 mg of decaffeinated green tea extract provides focused catechin and EGCG exposure without added stimulant load. Concentrated green tea extract may cause nausea or rare liver injury, especially when taken fasting.</p>
80 Budget

Green Tea

Jarrow Formulas
<p>It lowers recurring cost while green tea extract identifies catechins, polyphenols, and EGCG for focused antioxidant and metabolic support. Repeated full-amount entries make marker yields unclear, and caffeine content is not disclosed.</p>
82 Value

Caffeine 200 mg

Best Naturals
<p>It balances formula purpose and value because 200 mg of clearly disclosed caffeine provides predictable energy at low recurring cost. The formula offers no green-tea catechins or workout pump ingredients and may disturb sleep.</p>
84 Value

Smart Caffeine with L-Theanine

NS Natural Stacks
<p>It balances formula purpose and value because 200 mg of L-theanine paired with 100 mg of green-coffee caffeine provides practical calm-focus dosing. It has no controlled-release feature and does not supply a broader pre-workout ingredient base.</p>
74 Value

Hydroxycut Hardcore Elite

MuscleTech Performance Series
<p>It balances formula purpose and value because 270 mg of caffeine with green coffee, theanine, cocoa, coleus, and yohimbe creates strong stimulant and thermogenic effects. The aggressive combination may increase anxiety, rapid heartbeat, or blood pressure and should not be stacked with stimulants.</p>
Report alternatives

Sources

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

  1. 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
  2. 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
  3. 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
  4. 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
  5. 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
  6. 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
  7. 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
  8. 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
  9. 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
  10. 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
  11. 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
  12. 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
  13. 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
  14. Oral taurine improves critical power and severe-intensity exercise tolerance.
    Waldron M; Patterson SD; Jeffries O · Amino acids · 2020
    Randomized trial12 participantsFitness forTaurine
  15. 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
  16. 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
  17. 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
  18. 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
  19. Effects of caffeine on mood and performance: a study of realistic consumption.
    Brice CF; Smith AP · Psychopharmacology · 2003
    Clinical trial24 participantsMental Focus forCaffeine
  20. 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
  21. 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
  22. 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
  23. 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
  24. 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
  25. 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
  26. 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
  27. 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
  28. 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
  29. 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
  30. 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
  31. Taurine supplementation as a therapeutic strategy for cellular senescence and chronic inflammation in long COVID: a systematic review and meta-analysis.
    Wang K; Ma CH; Khoramjoo M; Kung JY; Oudit GY · BMC infectious diseases · 2026
    Meta-analysis1,030 participants27 studies pooledMetabolism Boost forTaurine
  32. Effect of Long-Term Taurine Supplementation on the Lipid and Glycaemic Profile in Adults with Overweight or Obesity: A Systematic Review and Meta-Analysis.
    Sun Q; Wang J; Wang H; Yu H; Wan K; Ma F; Wang R · Nutrients · 2025
    Meta-analysis9 studies pooledMetabolism Boost forTaurine
  33. The effects of taurine supplementation on obesity, blood pressure and lipid profile: A meta-analysis of randomized controlled trials.
    Guan L; Miao P · European journal of pharmacology · 2021
    Meta-analysis12 studies pooledMetabolism Boost forTaurine
  34. Beneficial effects of taurine on serum lipids in overweight or obese non-diabetic subjects.
    Zhang M; Bi LF; Fang JH; Su XL; Da GL; Kuwamori T; Kagamimori S · Amino acids · 2005
    Randomized trial30 participantsMetabolism Boost forTaurine
  35. Use of skeletal muscle fiber composition to assess relationship between amino acid metabolism and insulin sensitivity.
    Magnusson TE; Blackwood SJ; Tischer D; Strmeň T; Pontén M; Edman S; Horwath O; Apró W; Moberg M; Chorell E; Katz A · European journal of endocrinology · 2025
    Cross-sectional study36 participantsMetabolism Boost forTaurine
  36. 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
  37. 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
  38. 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
  39. 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
  40. 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
  41. Effects of caffeine on alertness.
    Zwyghuizen-Doorenbos A; Roehrs TA; Lipschutz L; Timms V; Roth T · Psychopharmacology · 1990
    Randomized trial24 participantsProductivity Boost forCaffeine
  42. 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
  43. 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
  44. 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
  45. 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
  46. 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
  47. 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
  48. 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
  49. 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
  50. 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
  51. 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
  52. 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
  53. 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
  54. 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
  55. 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