Product Image

Rapidcuts Shredded

ALLMAX
4.4
★ ★ ★ ★ ★
(1216 ratings)
Caffeine 190 mg
Ashwagandha 63 mg
Green Tea 25 mg
Chromium 60 mcg
Kelp 5 mg
Product Image
Score71
A high-value, caffeine-led thermogenic that can sharpen energy and workout drive, with a crowded blend and substantial stimulant burden as the main trade-offs.
How scoring works
Quantity:90 Capsule(s) • (90 servings)
Goals:
Weight Loss
Fitness
Metabolism Boost
Muscle Gain
Productivity Boost
Energy
Mental Focus

Score 71

A high-value, caffeine-led thermogenic that can sharpen energy and workout drive, with a crowded blend and substantial stimulant burden as the main trade-offs.
How scoring works
$19.99($0.22 per serving)
iHerb
$ 23.85
Nutrition Faktory
$ 19.99
Amazon
$ 72.99
Report prices

Analysis

Caffeine is the main driver, with the supplied analysis identifying 217 mg in total from anhydrous caffeine, dicaffeine malate, yerba mate, and guarana. That amount can support alertness, workout drive, and short-term thermogenesis, but it is also high enough to disrupt sleep or cause jitters in sensitive users.

Green coffee, green tea, cayenne, chromium, cinnamon, and ginseng add several metabolism-related pathways. Green tea supplies only a small EGCG amount, chromium is at a maintenance level, and the ashwagandha amount is modest, so these ingredients should be viewed as supporting additions rather than equal contributors.

A one-capsule serving and low serving cost make the product convenient for experienced stimulant users. The formula is less suitable for anyone who wants calm focus, a simple pre-workout, or a weight-management product that does not depend heavily on caffeine.

Who is it for
  • Adults with established caffeine tolerance
  • People seeking short-term energy during a calorie-controlled routine
  • Active users who want a one-capsule stimulant product
Best for
  • Acute energy and alertness
  • Stimulant-based workout drive
  • Thermogenic support alongside diet and activity

Pros

  • Discloses multiple caffeine sources and total caffeine context
  • One-capsule serving is convenient
  • Uses chromium polynicotinate
  • Includes several metabolism-oriented plant extracts
  • Low serving cost

Cons

  • Most of the practical effect depends on caffeine
  • Green tea and ashwagandha amounts are modest
  • Crowded formula makes individual tolerance harder to predict
  • Chromium amount is below a stronger metabolic-support range
  • Kelp is listed without a quantified iodine amount

Warnings

  • The supplied total of 217 mg caffeine may cause jitters, rapid heartbeat, anxiety, or sleep disruption; avoid taking it late in the day.
  • Do not stack it with energy drinks, pre-workouts, or other stimulant products because several caffeine sources are already included.
  • Naringin from grapefruit may alter exposure to some statins and calcium-channel blockers; confirm compatibility before use.
  • Kelp does not disclose its iodine contribution, and ashwagandha may affect thyroid activity, so people with thyroid disease or thyroid medication need product-specific guidance.
  • The caffeine amount makes this a poor fit during pregnancy or breastfeeding and for people advised to limit stimulants.

Nutrient quality

67 High impact

Bioavailable selenium and chromium forms support a formula led by a meaningful stimulant dose. Underdosed botanicals, unquantified iodine, and a crowded ingredient list reduce nutritional coherence.

Ingredient transparency

73 High impact

Most actives have individual amounts and no single proprietary blend hides the formula. Duplicate caffeine entries, unquantified kelp iodine, unclear extract yields, and absent non-active ingredients leave notable gaps.

Customer satisfaction

67 High impact

The aggregate satisfaction metric is good and supported by a large rating count. Specific firsthand feedback is absent, so recurring complaints and fit with the intended purpose cannot be assessed.

Value for money

75 High impact

A meaningful stimulant dose and low serving cost support practical value. Many weakly dosed extras and incomplete active-yield details make the formula less compelling than its long ingredient list suggests.

Report analysis

Goals

Weight Loss
Weight Loss
Impact
High effect
A- Goal FitA- Strength of SupportB- CoverageC+ Formula Quality
Selenium · 43 mcgAshwagandha · 63 mgGreen Tea · 25 mgCaffeine · 27 mg

Rapidcuts Shredded is strongly aligned with thermogenic support through 217 mg total caffeine, while its green tea and ashwagandha amounts are too small to add much independent effect.

Customer feedback averages 4.39 from 1,203 reviews and ALLMAX reports cGMP-certified manufacturing with full dose disclosure, while stimulant tolerance, sleep timing, and medication compatibility deserve attention.

Study evidence
Ashwagandha Disputed 4 studies
Caffeine Disputed 14 studies
Green Tea Supportive 42 studies
Fitness
Fitness
Impact
High effect
A- Goal FitA- Strength of SupportB- CoverageC- Formula Quality
Ashwagandha · 63 mgCaffeine · 27 mg

Rapidcuts Shredded provides about 217 mg total caffeine with 63 mg ashwagandha and several botanical additions, making acute stimulation its clearest fitness contribution.

Supplied reviews average 4.39 from 1,203 customers and ALLMAX reports cGMP manufacturing, while caffeine timing, individual tolerance, and the crowded weight-management formula warrant caution.

Study evidence
Ashwagandha Supportive 23 studies
Caffeine Supportive 255 studies
Metabolism Boost
Metabolism Boost
Impact
High effect
A Goal FitB+ Strength of SupportB CoverageC- Formula Quality
Niacin · 12 mgGreen Tea · 25 mgCaffeine · 27 mg

Rapidcuts Shredded has a direct metabolism fit through its disclosed thermogenic, thyroid, mitochondrial, or glycemic-support ingredients.

Dose quality and formula structure support a strong contribution, while evidence context and formula complexity remain the main constraints.

Study evidence
Caffeine Disputed 40 studies
Chromium Supportive 47 studies
Green Tea Supportive 31 studies
Muscle Gain
Muscle Gain
Impact
High effect
B+ Goal FitB Strength of SupportC+ CoverageB Formula Quality
Caffeine · 27 mg

Rapidcuts Shredded aligns with Muscle Gain mainly through Ashwagandha, while the supplied collection analyses average 80.3 and supplied customer feedback is 4.39 from 1,203 reviews.

Its strongest feature is form and disclosure quality, while some goal-relevant amounts are modest; it appears better suited to a targeted role within a broader routine.

Study evidence
Ashwagandha Supportive 10 studies
Productivity Boost
Productivity Boost
Impact
High effect
B+ Goal FitB Strength of SupportC+ CoverageB Formula Quality
Caffeine · 27 mg

Rapidcuts Shredded aligns with Productivity Boost mainly through Ashwagandha, while the supplied collection analyses average 80.3 and supplied customer feedback is 4.39 from 1,203 reviews.

Its strongest feature is form and disclosure quality, while some goal-relevant amounts are modest; it appears better suited to a targeted role within a broader routine.

Study evidence
Ashwagandha Supportive 6 studies
Energy
Energy
Impact
High effect
A- Goal FitA- Strength of SupportC+ CoverageD+ Formula Quality
Caffeine · 27 mg

Rapidcuts Shredded provides a substantial disclosed stimulant dose led by 190 mg caffeine anhydrous, and 1,203 reviews average 4.39. ALLMAX says the product is made in a cGMP-certified facility, is banned-substance free and uses laboratory-tested ingredients.

The several additional caffeine sources, concentrated catechins and grapefruit-derived naringin make stimulant sensitivity and medication fit important considerations.

Study evidence
Ashwagandha Supportive 9 studies
Caffeine Supportive 68 studies
Mental Focus
Mental Focus
Impact
High effect
B Goal FitB Strength of SupportC- CoverageD- Formula Quality
Caffeine · 27 mg

Rapidcuts Shredded has a partial fit for mental focus based on its disclosed attention, energy, memory, or stress-resilience ingredients.

Dose quality and formula structure support a strong contribution, with evidence depth and pathway balance determining the final strength.

Study evidence
Ashwagandha Supportive 12 studies
Caffeine Supportive 128 studies

Ingredients

IngredientAmount per serving
Niacin (Niacinamide)
 12 mg
Selenium (L-Selenomethionine)
 43 mcg
Chromium (Chromium Polynicotinate)
 60 mcg
Green Coffee Extract (Coffea robusta Seed Extract)
 200 mg
Caffeine Anhydrous
190 mg
Ashwagandha Root Extract (Withanolide Glycosides)
 63 mg
Olive, Powder
30 mg
Dicaffeine Malate
27 mg
Yerba Mate Leaf Extract (Caffeine)
 25 mg
Green Tea Leaf Extract (Epigallocatechin-3-Gallate)
 25 mg
Naringin (Grapefruit extract)
 19 mg
Guarana Seed Extract (Caffeine)
 17 mg
Hordeum (Hordeum vulgare)
 16 mg
Cayenne fruit extract
13 mg
Korean Ginseng Root Extract (Ginsenosides)
 12 mg
Cinnulin PF (Cinnamomum burmannii Bark Extract)
 10 mg
Kelp (Fucus vesiculosus, whole) powder
5 mg
Black Pepper fruit extract (Piperine)
 2.5 mg
Adults 18–50
Report overview
Caffeine · 190 mg OverallScore95
A- Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value

The label reports 217 mg total caffeine from caffeine anhydrous, di-caffeine malate, and botanical sources, placing the dose in the rubric's optimal range. Strong customer feedback, a one-capsule serving, and a $0.22 cost support excellent value, while the unbranded buffered component falls short of full multi-stage-release credit.

View ingredientView products
Ashwagandha (Withanolide Glycosides) · 63 mg OverallScore65
B Active Ingredient Quality & BioavailabilityD+ Dose, Safety & Label TransparencyC Value

Rapidcuts Shredded discloses 63 mg ashwagandha per serving and has a 4.39 average from 1,203 reviews. ALLMAX reports cGMP-certified manufacturing and full dose disclosure, while the 190 mg caffeine content requires stimulant and sleep-timing caution.

View ingredientView products
Green Tea (Epigallocatechin-3-Gallate) · 25 mg OverallScore60
A- Active Ingredient Quality & BioavailabilityD+ Dose, Safety & Label TransparencyF Value

ALLMAX Rapidcuts Shredded uses 25 mg of green tea extract standardized to 50% EGCG, yielding only 12.5 mg EGCG, and has 1,203 reviews averaging 4.39. Piperine and quantified stimulant sources support transparency, but the EGCG dose is small and costs about $3.52 per 200 mg.

View ingredientView products
Loading alternative details
76 Performance

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Redcon1
<p>Citrulline malate, beta-alanine, agmatine, taurine, and a strong multi-source stimulant blend create a potent pre-workout formula. Compared with Rapidcuts Shredded, its more coherent or better-characterized ingredients may address the original’s high stimulant load and many lightly dosed botanical additions more effectively, although its stated limitations remain relevant.</p>
71 Performance

VO2 Max Performance Fat Burner

Irwin Naturals
<p>Standardized green tea and ashwagandha support energy, but oils and lightly dosed botanicals broaden the formula. Compared with Rapidcuts Shredded, its more coherent or better-characterized ingredients may address the original’s high stimulant load and many lightly dosed botanical additions more effectively, although its stated limitations remain relevant.</p>
61 Performance

Nugenix Thermo

Nugenix
<p>Multiple caffeine sources, cayenne, chromium, coffee, tea, and red-orange extract create a strong thermogenic formula, but carnitine and several secondary actives are lightly dosed. Compared with Rapidcuts Shredded, its more coherent or better-characterized ingredients may address the original’s high stimulant load and many lightly dosed botanical additions more effectively, although its stated limitations remain relevant.</p>
83 Budget

TheanineUP Focused Energy

California Gold Nutrition
<p>A balanced theanine and caffeine pairing supports alert focus, with cocoa and matcha adding mild complementary stimulation. The supplied list has no lower-cost eligible option for Rapidcuts Shredded; this is one of the closest-cost choices, but it does not meet the usual cheaper criterion.</p>
59 Budget

Super HD

Cellucor
<p>Caffeine and a branded green tea phytosome provide a clear stimulant core at a low serving cost. The supplied list has no lower-cost eligible option for Rapidcuts Shredded; this is one of the closest-cost choices, but it does not meet the usual cheaper criterion.</p>
66 Budget

Green Tea Fat Burner

Applied Nutrition
<p>The formula combines a concentrated green tea extract with a moderate stimulant dose, but two vaguely named additions limit confidence in the complete blend. The supplied list has no lower-cost eligible option for Rapidcuts Shredded; this is one of the closest-cost choices, but it does not meet the usual cheaper criterion.</p>
57 Value

Essential AMIN.O. Energy Juicy Strawberry Burst

Optimum Nutrition
<p>A modest caffeine dose can support lighter energy needs, but the amino acids are hidden inside a single blend and cannot be judged individually. Compared with Rapidcuts Shredded, a competitive ingredient profile and clearer practical strengths improve the quality-to-cost trade-off, with the stated formula gaps as the main limitation.</p>
62 Value

Green Tea Fat Burner

Applied Nutrition
<p>The formula combines a concentrated green tea extract with a moderate stimulant dose, but two vaguely named additions make its full purpose hard to judge. Compared with Rapidcuts Shredded, a competitive ingredient profile and clearer practical strengths improve the quality-to-cost trade-off, with the stated formula gaps as the main limitation.</p>
52 Value

Ripped Fuel Extreme

Twinlab
<p>The stimulant blend may support short-term energy, but several overlapping caffeine and cocoa entries make total exposure hard to judge. Compared with Rapidcuts Shredded, a competitive ingredient profile and clearer practical strengths improve the quality-to-cost trade-off, with the stated formula gaps as the main limitation.</p>
Report alternatives

Sources

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

  1. Effect of Caffeine on Golf Performance and Fatigue during a Competitive Tournament.
    Mumford PW; Tribby AC; Poole CN; Dalbo VJ; Scanlan AT; Moon JR; Roberts MD; Young KC · Medicine and science in sports and exercise · 2016
    Randomized trial12 participantsEnergy forCaffeine
  2. 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
  3. 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
  4. Systematic review and meta-analysis of the efficacy and safety of chromium supplementation in diabetes.
    Suksomboon N; Poolsup N; Yuwanakorn A · Journal of clinical pharmacy and therapeutics · 2015
    Meta-analysis25 studies pooledMetabolism Boost forChromium
  5. Chromium picolinate does not improve key features of metabolic syndrome in obese nondiabetic adults.
    Iqbal N; Cardillo S; Volger S; Bloedon LT; Anderson RA; Boston R; Szapary PO · Metabolic syndrome and related disorders · 2009
    Randomized trial63 participantsMetabolism Boost forChromium
  6. 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
  7. Metabolic response to green tea extract during rest and moderate-intensity exercise.
    Hodgson AB; Randell RK; Boon N; Garczarek U; Mela DJ; Jeukendrup AE; Jacobs DM · The Journal of nutritional biochemistry · 2013
    Randomized trial27 participantsMetabolism Boost forGreen Tea
  8. 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
  9. Acute caffeine ingestion reduces insulin sensitivity in healthy subjects: a systematic review and meta-analysis.
    Shi X; Xue W; Liang S; Zhao J; Zhang X · Nutrition journal · 2017
    Meta-analysis7 studies pooledMetabolism Boost forCaffeine
  10. Effects of multi-herb and ashwagandha root formulas on stress modulation: a randomized, double-blind, placebo-controlled clinical study.
    McKinney E; Stewart J; Kewalramani R; Singh S · Trials · 2026
    Randomized trial186 participantsEnergy forAshwagandha
  11. Efficacy and Safety of Low-Dose Ashwagandha Supplementation on Exercise Endurance: A Randomized, Placebo-Controlled, Double-Blind, Clinical Trial.
    Prajapati H; Satia M; Shah D; Basera I; Shah T · Phytotherapy research : PTR · 2026
    Randomized trialEnergy forAshwagandha
  12. Acute and Repeated Ashwagandha Supplementation Improves Markers of Cognitive Function and Mood.
    Leonard M; Dickerson B; Estes L; Gonzalez DE; Jenkins V; Johnson S; Xing D; Yoo C; Ko J; Purpura M; Jäger R; Faries M; Kephart W; Sowinski R; Rasmussen CJ; Kreider RB · Nutrients · 2024
    Randomized trial59 participantsEnergy forAshwagandha
  13. Enhancing healthspan with Ashwagandha (Withania somnifera): a comprehensive review of its multifaceted geroprotective benefits.
    Vittal M; Vinciguerra M · Biogerontology · 2025
    Narrative reviewEnergy forAshwagandha
  14. Safety and Efficacy of Ashwagandha Root Extract on Cognition, Energy and Mood Problems in Adults: Prospective, Randomized, Placebo-Controlled Study.
    Kale S; Lopresti A; Suri R; Garg N; Langade D · Journal of psychoactive drugs · 2026
    Randomized trial120 participantsEnergy Productivity Boost forAshwagandha
  15. 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
  16. 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
  17. 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
  18. 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
  19. 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
  20. Effects of an Aqueous Extract of Withania somnifera on Strength Training Adaptations and Recovery: The STAR Trial.
    Ziegenfuss TN; Kedia AW; Sandrock JE; Raub BJ; Kerksick CM; Lopez HL · Nutrients · 2019
    Randomized trial38 participantsFitness forAshwagandha
  21. Efficacy of Ashwagandha (Withania somnifera [L.] Dunal) in improving cardiorespiratory endurance in healthy athletic adults.
    Choudhary B; Shetty A; Langade DG · Ayu · 2016
    Randomized trial50 participantsFitness forAshwagandha
  22. Effects of Ashwagandha ( Withania somnifera) standardized root extract on physical endurance and VO 2max in healthy adults performing resistance training: An eight-week, prospective, randomized, double-blind, placebo-controlled study.
    Verma N; Gupta SK; Patil S; Tiwari S; Mishra AK · F1000Research · 2024
    Randomized trial80 participantsFitness Muscle Gain forAshwagandha
  23. Effects of Withania somnifera (L.) Dunal (Ashwagandha) on cognitive and physical function in adults: a systematic review and meta-analysis.
    Zhu X; Zeng Q; Lei Y; Xu D · Frontiers in pharmacology · 2026
    Meta-analysis1,249 participants20 studies pooledFitness Muscle Gain forAshwagandha
  24. Effects of eight-week supplementation of Ashwagandha on cardiorespiratory endurance in elite Indian cyclists.
    Shenoy S; Chaskar U; Sandhu JS; Paadhi MM · Journal of Ayurveda and integrative medicine · 2013
    Randomized trial40 participantsFitness forAshwagandha
  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. Efficacy and safety of ashwagandha root extract in children and adolescents with mild attention-deficit/hyperactivity disorder: a randomized, double-blind, placebo-controlled trial.
    Naik S; Muralidhar G; Rao BS; Agarwal S; Jain M · Journal of medicine and life · 2026
    Randomized trial58 participantsMental Focus forAshwagandha
  30. Efficacy and Safety of Ashwagandha (Withania somnifera (L.) Dunal) Root Extract in Improving Memory and Cognitive Functions.
    Choudhary D; Bhattacharyya S; Bose S · Journal of dietary supplements · 2018
    Randomized trial50 participantsMental Focus forAshwagandha
  31. Effect of ashwagandha (Withania somnifera) extract with Sominone (Somin-On™) to improve memory in adults with mild cognitive impairment: A randomized, double-blind, placebo-controlled study.
    Rai HP; Mishra DN · Journal of psychopharmacology (Oxford, England) · 2025
    Randomized trial40 participantsMental Focus forAshwagandha
  32. A clinical assessment of the therapeutic effects of Ashwagandha root extract on cognitive performance, sleep, and fatigue in children aged 6-12 years.
    Saxena A; Lopresti A; Sharif M; Elon N; Suri R; Langade DK · Frontiers in nutrition · 2026
    Randomized trial85 participantsMental Focus forAshwagandha
  33. A standardized Ashwagandha root extract alleviates stress, anxiety, and improves quality of life in healthy adults by modulating stress hormones: Results from a randomized, double-blind, placebo-controlled study.
    Majeed M; Nagabhushanam K; Mundkur L · Medicine · 2023
    Randomized trial54 participantsMental Focus forAshwagandha
  34. 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
  35. 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
  36. 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
  37. Effects of caffeine on mood and performance: a study of realistic consumption.
    Brice CF; Smith AP · Psychopharmacology · 2003
    Clinical trial24 participantsMental Focus forCaffeine
  38. 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
  39. 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
  40. 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
  41. 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
  42. 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
  43. Elevated intakes of supplemental chromium improve glucose and insulin variables in individuals with type 2 diabetes.
    Anderson RA; Cheng N; Bryden NA; Polansky MM; Cheng N; Chi J; Feng J · Diabetes · 1997
    Randomized trial180 participantsMetabolism Boost forChromium
  44. Chromium Supplementation and the Effects on Metabolic Status in Women with Polycystic Ovary Syndrome: A Randomized, Double-Blind, Placebo-Controlled Trial.
    Jamilian M; Asemi Z · Annals of nutrition & metabolism · 2016
    Randomized trial64 participantsMetabolism Boost forChromium
  45. A Comprehensive insight into the effect of chromium supplementation on oxidative stress indices in diabetes mellitus: A systematic review.
    Kooshki F; Tutunchi H; Vajdi M; Karimi A; Niazkar HR; Shoorei H; Pourghassem Gargari B · Clinical and experimental pharmacology & physiology · 2024
    Systematic review33 studies pooledMetabolism Boost forChromium
  46. Comparison of nutritional supplements in improving glycolipid metabolism and endocrine function in polycystic ovary syndrome: a systematic review and network meta-analysis.
    Hu X; Wang W; Su X; Peng H; Tan Z; Li Y; Huang Y · PeerJ · 2023
    Meta-analysis2,362 participants41 studies pooledMetabolism Boost forChromium
  47. [Chromium supplementation in patients with type 2 diabetes and high risk of type 2 diabetes: a meta-analysis of randomized controlled trials].
    San Mauro-Martin I; Ruiz-León AM; Camina-Martín MA; Garicano-Vilar E; Collado-Yurrita L; Mateo-Silleras Bd; Redondo Del Río Mde P · Nutricion hospitalaria · 2017
    Meta-analysis13 studies pooledMetabolism Boost forChromium
  48. 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
  49. 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
  50. 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
  51. 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
  52. Ashwagandha Root Extract Stabilises Physiological Stress Responses in Male and Female Team Sports Athletes During Pre-Season Training.
    Coope OC; Otaegui E; Suárez M; Levington A; Abad-Sangrà M; Lloyd B; Spurr TJ; Roman-Viñas B · Nutrients · 2026
    Randomized trial56 participantsMuscle Gain forAshwagandha
  53. Evaluation of Withania somnifera (L.) Dunal (Ashwagandha) on Physical Performance, Biomarkers of Inflammation, and Muscle Status in Healthy Volunteers: A Randomized, Double-Blind, Placebo-Controlled Study.
    Raut A; Tripathi R; Marathe PA; Uchil DA; Agashe S; Rege N; Vaidya AB · Cureus · 2024
    Randomized trialMuscle Gain forAshwagandha
  54. Examining the effect of Withania somnifera supplementation on muscle strength and recovery: a randomized controlled trial.
    Wankhede S; Langade D; Joshi K; Sinha SR; Bhattacharyya S · Journal of the International Society of Sports Nutrition · 2016
    Randomized trial57 participantsMuscle Gain forAshwagandha
  55. Effect of Ashwagandha (Withania somnifera) extract on sleep: A systematic review and meta-analysis.
    Cheah KL; Norhayati MN; Husniati Yaacob L; Abdul Rahman R · PloS one · 2021
    Meta-analysis400 participants5 studies pooledProductivity Boost forAshwagandha
  56. Clinical evaluation of the pharmacological impact of ashwagandha root extract on sleep in healthy volunteers and insomnia patients: A double-blind, randomized, parallel-group, placebo-controlled study.
    Langade D; Thakare V; Kanchi S; Kelgane S · Journal of ethnopharmacology · 2021
    Randomized trial80 participantsProductivity Boost forAshwagandha
  57. Effect of standardized aqueous extract of Withania somnifera on tests of cognitive and psychomotor performance in healthy human participants.
    Pingali U; Pilli R; Fatima N · Pharmacognosy research · 2014
    Randomized trial20 participantsProductivity Boost forAshwagandha
  58. Efficacy of Withania somnifera supplementation on adult's cognition and mood.
    Remenapp A; Coyle K; Orange T; Lynch T; Hooper D; Hooper S; Conway K; Hausenblas HA · Journal of Ayurveda and integrative medicine · 2022
    Randomized trial60 participantsProductivity Boost forAshwagandha
  59. Efficacy and safety of Ashwagandha (Withania somnifera) root extract on stress and weight management in adults: a prospective, randomized, double-blind, placebo-controlled study.
    Pakhale K; Pakhale R; Srivathsan M; Langade J; Langade D · Journal of medicine and life · 2026
    Randomized trial100 participantsWeight Loss forAshwagandha
  60. Body Weight Management in Adults Under Chronic Stress Through Treatment With Ashwagandha Root Extract: A Double-Blind, Randomized, Placebo-Controlled Trial.
    Choudhary D; Bhattacharyya S; Joshi K · Journal of evidence-based complementary & alternative medicine · 2017
    Randomized trial52 participantsWeight Loss forAshwagandha
  61. Impact of ashwagandha (Withania somnifera L.) supplementation on serum lipid concentrations and anthropometric parameters in adults with overweight and obesity: a double-blind, placebo-controlled pilot study.
    Ballesteros-Torres JM; Vázquez-Aguilar A; Luzardo-Ocampo I; Escalante-Aburto A; Caballero-Prado CJ · Nutrition & metabolism · 2025
    Randomized trial43 participantsWeight Loss forAshwagandha
  62. Adjunctive Ashwagandha (Withania somnifera) Supplementation and Resistance-Training Adaptations in Healthy Adults: A Systematic Review and Random-Effects Meta-Analysis of Muscular Strength, Chest Circumference, and Body Composition.
    Lee JC; Heo AS · Nutrients · 2026
    Meta-analysis161 participants4 studies pooledWeight Loss forAshwagandha
  63. 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
  64. 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
  65. 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
  66. 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
  67. 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
  68. 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
  69. 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
  70. 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
  71. 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
  72. 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