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Keto-Karma Burn Fat Red

Irwin Naturals
4.3
★ ★ ★ ★ ★
(452 ratings)
Theanine 25 mg
Vitamin B5 30 mg
Citrulline 750 mg
Green Tea 270 mg
Coconut 50 mg
Protein (unspecified) 3 Gram(s)
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Score60
A useful EGCG amount is overshadowed by very high stimulant exposure and underdosed supporting ingredients. It is a poor fit for caffeine-sensitive users or anyone seeking focused citrulline or theanine support.
How scoring works
Quantity:72 Softgel(s) • (24 servings)
Goals:
Anti-Inflammatory Support
Cognitive Support
Skin Health
Heart Health

Score 60

A useful EGCG amount is overshadowed by very high stimulant exposure and underdosed supporting ingredients. It is a poor fit for caffeine-sensitive users or anyone seeking focused citrulline or theanine support.
How scoring works
$24.99($1.04 per serving)
Pure Formulas
$ 24.99
Amazon
$ 24.99
iHerb
$ 24.99
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Analysis

Green tea extract provides 270 mg of disclosed EGCG, and the black pepper complex may increase absorption. Flaxseed oil and MCT oil add fats, while methylcobalamin and calcium pantothenate are useful nutrient forms.

The stimulant profile dominates the formula: the supplied data list 375 mg of caffeine from mate, with additional guarana and possible caffeine from green tea. Only 25 mg of branded L-theanine is included, which is unlikely to fully balance that exposure for a stimulant-sensitive user.

L-citrulline is clearly identified but its 750 mg amount is well below common performance-oriented servings. Three softgels deliver modest protein and several token-dose powders, so the product fits someone seeking a strong stimulant experience more than someone wanting focused cardiovascular, skin, cognitive, or long-term wellness support.

Who is it for
  • Adults with high caffeine tolerance who avoid other stimulant sources
  • People specifically seeking a stimulant-led fat-management formula
  • Users comfortable taking three softgels per serving
Best for
  • Short-term alertness and stimulation
  • Combining green tea EGCG with MCT and flaxseed oils
  • Users who prioritize a strong stimulant effect over focused ingredient dosing

Pros

  • Discloses a meaningful EGCG amount
  • Uses branded AlphaWave L-theanine
  • Includes clearly quantified L-citrulline, MCT oil, and flaxseed oil
  • Provides methylcobalamin and a stable pantothenic acid form

Cons

  • Stimulant exposure dominates the formula
  • Theanine is too lightly dosed to serve as a standalone calming ingredient
  • Citrulline is underdosed for exercise-focused use
  • Guarana and green tea make total caffeine exposure harder to confirm

Warnings

  • The supplied data list 375 mg of caffeine from mate before accounting for guarana or green tea; avoid combining the serving with coffee, energy drinks, pre-workouts, or stimulant medicines.
  • High caffeine exposure may cause rapid heartbeat, higher blood pressure, anxiety, tremor, or sleep disruption, particularly in people with heart rhythm concerns or stimulant sensitivity.
  • Concentrated green tea extract and EGCG may be harder on the liver when taken fasting; follow the label's food directions and stop use if dark urine, yellowing skin, or persistent upper-abdominal discomfort develops.
  • L-citrulline may add to blood-pressure lowering from nitrates, PDE-5 inhibitors, or antihypertensive medicines.
  • Black pepper extract can alter the absorption or clearance of some medicines, so users of narrow-therapeutic-index drugs should have the combination reviewed.

Nutrient quality

49 Lower impact

Meaningful EGCG and several well-identified forms provide some useful activity. Underdosed citrulline and theanine, a high stimulant load, and multiple token additions weaken balance and goal fit.

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Ingredient transparency

78 High impact

Individual active amounts are supplied and no proprietary blend hides the formula. Total caffeine, complete use directions, and non-active softgel ingredients remain unclear.

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Customer satisfaction

65 High impact

The supplied average is favorable and supported by a moderate rating count. Specific firsthand feedback is absent, so recurring complaints and purpose fit cannot be assessed.

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Value for money

44 Lower impact

The serving cost is difficult to justify because several important actives are modest and the formula poorly fits the configured goals. Token additions and stimulant-safety uncertainty further weaken category value.

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Report analysis

Goals

Anti-Inflammatory Support
Anti-Inflammatory Support
Impact
High effect
C+ Goal FitB+ Strength of SupportB- CoverageD Formula Quality
Blue-Green Algae · 20 mgGreen Tea · 270 mg

The disclosed EGCG amount provides meaningful antioxidant and inflammatory-signaling support. The formula is nevertheless designed mainly for stimulation and fat metabolism.

Mate and guarana make total caffeine exposure unclear. The stimulant combination may cause jitteriness, rapid heartbeat, or sleep disruption in sensitive users.

Study evidence
Green Tea Mixed 16 studies
Cognitive Support
Cognitive Support
Impact
High effect
B- Goal FitB Strength of SupportD+ CoverageC+ Formula Quality
Thiamin · 0.5 mgVitamin B12 · 2 mcgGreen Tea · 270 mgTheanine · 25 mg

The formula may support attention or calm focus through stimulant, L-theanine, or stress-related pathways. Its usefulness depends on the exact active amounts and whether alertness or relaxation is the intended outcome.

It does not provide broad memory, membrane, or long-term neuroprotective support. Multi-ingredient versions also include several components with limited direct cognitive relevance.

Study evidence
Theanine Supportive 25 studies
Skin Health
Skin Health
Impact
High effect
C+ Goal FitB+ Strength of SupportC+ CoverageF Formula Quality
Green Tea · 270 mg

A disclosed EGCG amount provides meaningful antioxidant support, while flaxseed oil may add modest barrier-lipid support. The stimulant-heavy formula is designed for fat loss rather than skin.

EGCG is clearly quantified, but total caffeine from mate, guarana, and green tea is unclear. The stimulant combination may cause jitteriness, sleep disruption, or a faster heart rate in sensitive users.

Study evidence
Green Tea Supportive 37 studies
Heart Health
Heart Health
Impact
Moderate effect
B- Goal FitC- Strength of SupportC CoverageD Formula Quality
Vitamin B12 · 2 mcgGreen Tea · 270 mgCitrulline · 750 mg

Green-tea EGCG, citrulline, and flax oil touch antioxidant, vascular, and lipid-related pathways. The heart-health potential is weakened by an underdosed citrulline amount and a stimulant-heavy fat-burner design.

EGCG is meaningfully supplied, while theanine, coconut powder, guarana, and spirulina add little cardiovascular depth. The listed 375 mg caffeine exposure may cause a rapid heartbeat, higher blood pressure, jitters, or sleep disruption in sensitive users.

Study evidence
Citrulline Supportive 39 studies
Green Tea Supportive 84 studies

Ingredients

IngredientAmount per serving
Calories
30 Calorie(s)
Total Fat
1.5 Gram(s)
Total Carbohydrates
1 Gram(s)
Protein
3 Gram(s)
Thiamine (Thiamine Hydrochloride)
 0.5 mg
Riboflavin
0.5 mg
Niacin (Niacinamide)
 7 mg
Vitamin B12 (Methylcobalamin)
 2 mcg
Pantothenic Acid (D-Calcium Pantothenate)
 30 mg
Flaxseed Oil
900 mg
L-Citrulline
750 mg
Medium Chain Triglycerides
600 mg
Mate extract (Caffeine)
 375 mg
Green Tea extract (EGCG)
 270 mg
Cococin Coconut Water powder
50 mg
AlphaWave L-Theanine
25 mg
Guarana powder
20 mg
Spirulina powder
20 mg
BioPerine Complex
3 mg
Adults 18–50 Women
Report overview
Theanine · 25 mg OverallScore76
A+ Active Ingredient Quality & BioavailabilityB Dose, Safety & Label TransparencyF Value

AlphaWave provides a branded, high-purity L-Theanine source with clear dose disclosure. The 25 mg amount is small but appears intended to balance a stimulant-focused formula rather than act as a standalone relaxation dose. Value for theanine is poor, and mate plus guarana may contribute to jitteriness or sleep disruption in stimulant-sensitive users.

View ingredientView products
Vitamin B5 (D-Calcium Pantothenate) · 30 mg OverallScore62
A Active Ingredient Quality & BioavailabilityD+ Dose, Safety & Label TransparencyF Value

Calcium pantothenate provides a stable and well-absorbed B5 form. The 30 mg amount meets basic needs but falls below the collection's maintenance benchmark. No specified problematic excipients are disclosed, but cost efficiency is weak for the active amount.

View ingredientView products
Citrulline · 750 mg OverallScore54
B- Active Ingredient Quality & BioavailabilityC Dose, Safety & Label TransparencyF Value

Pure L-citrulline is clearly identified, but the 750 mg amount is substantially underdosed for exercise performance. The multi-ingredient softgel formula provides no source or purity details for citrulline and carries a very high active-amount cost. The listed 375 mg caffeine from mate may cause jitters, sleep disruption, or a rapid heartbeat in caffeine-sensitive users.

View ingredientView products
Loading alternative details
81 Performance

Matcha

Green Foods
<p>Organic matcha supplies measured catechins, mild tea caffeine, and a small amount of L-theanine in a simple whole-food formula. It aligns more closely with heart, healthy-aging, and anti-inflammatory goals than the stimulant-heavy original, though EGCG is not quantified.</p>
73 Performance

Metabolism Weight Management

LifeSeasons
<p>Standardized green tea and green coffee extracts with chromium create a more coherent metabolism-focused core than the original's broad stimulant stack. Caffeine is still not fully disclosed, and concentrated green tea may be poorly tolerated on an empty stomach.</p>
73 Performance

Steel-Libido RED

Irwin Naturals
<p>Citrulline, theanine, ginkgo, and mild stimulants offer a more balanced circulation-and-focus profile than the original's heavy caffeine load. Velvet bean, ginkgo, ginseng, theobromine, and BioPerine add interaction concerns, while the libido focus is not a direct match for the configured goals.</p>
61 Budget

Nitric Oxide Pre-Sport With L-Citrulline

Irwin Naturals
<p>A lower serving cost retains citrulline and theanine in a disclosed performance blend. Those amounts are modest, ginkgo strength is incomplete, and yerba mate may still add stimulant effects, so the safety improvement is limited.</p>
69 Budget

Liquid Collagen Complex Healthy Hair Skin & Nails Delicious Grape Flavor

RejuviCare
<p>Biotin and pantothenic acid provide a skin-and-hair focus at a much lower serving cost. The collagen amount is far below common gram-level servings, and the formula does not address the original's green-tea, theanine, or citrulline roles.</p>
59 Budget

Bedtime Burn

Dr. Emil Nutrition
<p>Melatonin and green-tea extract provide a lower-cost option with less emphasis on daytime stimulation. Most calming ingredients are small, and possible caffeine from green tea could work against bedtime use, so the formula remains poorly focused.</p>
83 Value

TheanineUP Focused Energy

California Gold Nutrition
<p>A balanced theanine-and-caffeine pairing supports alert focus at a much lower serving cost than the original. Cocoa and matcha add mild stimulation, while the moderate caffeine amount may still cause jitters or sleep disruption in sensitive users.</p>
85 Value

L-Theanine 100 mg

NOW
<p>A simple L-theanine formula using decaffeinated green tea provides calm-attention support with strong recurring value. Green-tea catechins are not standardized, but avoiding the original's large caffeine load improves tolerability for stimulant-sensitive users.</p>
76 Value

Brain Awake

Irwin Naturals
<p>Bacopa, branded L-theanine, modest caffeine, and holy basil provide more purposeful cognitive support at a cost close to the original. Several botanical markers remain unclear, and even the lower stimulant load may disrupt sleep in sensitive users.</p>
Report alternatives

Sources

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

  1. Effect of oral L-citrulline on brachial and aortic blood pressure defined by resting status: evidence from randomized controlled trials.
    Yang HH; Li XL; Zhang WG; Figueroa A; Chen LH; Qin LQ · Nutrition & metabolism · 2022
    Meta-analysis8 studies pooledHeart Health forCitrulline
  2. Asymmetric dimethylarginine and citrulline are risk factors for cardiovascular disease independently of both estimated and measured GFR.
    Rinde NB; Melsom T; Fuskevåg OM; Eriksen BO; Norvik JV · Clinical kidney journal · 2025
    Cohort study1,575 participantsHeart Health forCitrulline
  3. Circulating nitric oxide pathway metabolites in heart failure with preserved ejection fraction: a sex-stratified cross-sectional analysis.
    Dinges SM; Schwedhelm E; Baldassarri F; Haller B; Gevaert AB; Böger R; Winzer EB; Edelmann F; Wisløff U; Adams V; Pieske B; Van Craenenbroeck EM; Halle M; Hofmann SM; Mueller-Stegner S · Biology of sex differences · 2026
    Cross-sectional study171 participantsHeart Health forCitrulline
  4. Citrulline supplementation in postmenopausal women: a systematic review of vascular, muscular, and metabolic effects.
    Bahari H; Ramezani E; Malekahmadi M · BMC women's health · 2026
    Systematic review360 participants12 studies pooledHeart Health forCitrulline
  5. The effects of green tea on acne vulgaris: A systematic review and meta-analysis of randomized clinical trials.
    Kim S; Park TH; Kim WI; Park S; Kim JH; Cho MK · Phytotherapy research : PTR · 2021
    Meta-analysis247 participants5 studies pooledAnti-Inflammatory Support forGreen Tea
  6. Green Tea Catechin Association with Ultraviolet Radiation-Induced Erythema: A Systematic Review and Meta-Analysis.
    Kapoor MP; Sugita M; Fukuzawa Y; Timm D; Ozeki M; Okubo T · Molecules (Basel, Switzerland) · 2021
    Meta-analysis100 participants6 studies pooledAnti-Inflammatory Support Skin Health forGreen Tea
  7. Efficacy of (-)-epigallocatechin gallate delivered by a new-type scaler tip during scaling and root planing on chronic periodontitis: a split-mouth, randomized clinical trial.
    Wang Y; Zeng J; Yuan Q; Luan Q · BMC oral health · 2021
    Randomized trial20 participantsAnti-Inflammatory Support forGreen Tea
  8. Camellia Sinensis Mouthwashes in Oral Care: a Systematic Review.
    Tafazoli A; Tafazoli Moghadam E · Journal of dentistry (Shiraz, Iran) · 2020
    Systematic review69 studies pooledAnti-Inflammatory Support forGreen Tea
  9. Skin photoprotection by green tea: antioxidant and immunomodulatory effects.
    Katiyar SK · Current drug targets. Immune, endocrine and metabolic disorders · 2004
    Narrative reviewAnti-Inflammatory Support forGreen Tea
  10. Assessing the effects of caffeine and theanine on the maintenance of vigilance during a sustained attention task.
    Foxe JJ; Morie KP; Laud PJ; Rowson MJ; de Bruin EA; Kelly SP · Neuropharmacology · 2012
    Randomized trial27 participantsCognitive Support forTheanine
  11. Effects of Tea (Camellia sinensis) or its Bioactive Compounds l-Theanine or l-Theanine plus Caffeine on Cognition, Sleep, and Mood in Healthy Participants: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.
    Payne ER; Aceves-Martins M; Dubost J; Greyling A; de Roos B · Nutrition reviews · 2025
    Meta-analysis50 studies pooledCognitive Support forTheanine
  12. Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial.
    Hidese S; Ogawa S; Ota M; Ishida I; Yasukawa Z; Ozeki M; Kunugi H · Nutrients · 2020
    Randomized trial30 participantsCognitive Support forTheanine
  13. Dose-response effect of L-theanine on psychomotor speed, sustained attention, and inhibitory control: a double-blind, placebo-controlled, crossover study.
    Dassanayake TL; Wijesundara D; Kahathuduwa CN; Weerasinghe VS · Nutritional neuroscience · 2023
    Randomized trial32 participantsCognitive Support forTheanine
  14. Acute effects of theanine, caffeine and theanine-caffeine combination on attention.
    Kahathuduwa CN; Dassanayake TL; Amarakoon AMT; Weerasinghe VS · Nutritional neuroscience · 2018
    Clinical trial20 participantsCognitive Support forTheanine
  15. Impact of L-Citrulline Supplementation and HIIT on Lipid Profile, Arterial Stiffness, and Fat Mass in Obese Adolescents with Metabolic-Dysfunction-Associated Fatty Liver Disease: A Randomized Clinical Trial.
    Rodríguez-Carrillo AA; Espinoza-Vargas MR; Vargas-Ortiz K; Ibarra-Reynoso LDR; Olvera-Juárez M; Gómez-Ojeda A; Garay-Sevilla ME; Figueroa A · Nutrients · 2025
    Randomized trial44 participantsHeart Health forCitrulline
  16. Effects of L-Citrulline Supplementation on Endothelial Function and Blood Pressure in Hypertensive Postmenopausal Women.
    Maharaj A; Fischer SM; Dillon KN; Kang Y; Martinez MA; Figueroa A · Nutrients · 2022
    Randomized trial25 participantsHeart Health forCitrulline
  17. Vascular effects of l-citrulline supplementation in healthy adults are largely influenced by the prehypertensive range of blood pressure: A double-blind, randomized, placebo-controlled, parallel-group study.
    Nogimura D; Nagaoka K; Ogino K; Ogino N; Moriyasu K; Morita M · Nutrition research (New York, N.Y.) · 2026
    Randomized trial66 participantsHeart Health forCitrulline
  18. The Assessment of short-term effect of L-Citrulline on endothelial function via FMD to NMD ratio in known CAD patients: A randomized, cross-over clinical trial (Clinical trial number: NCT02638727).
    Safi M; Mahjoob MP; Nateghi S; Khaheshi I; Akbarzadeh MA; Naderian M · Romanian journal of internal medicine = Revue roumaine de medecine interne · 2017
    Randomized trial30 participantsHeart Health forCitrulline
  19. Green tea catechins and blood pressure: a systematic review and meta-analysis of randomised controlled trials.
    Khalesi S; Sun J; Buys N; Jamshidi A; Nikbakht-Nasrabadi E; Khosravi-Boroujeni H · European journal of nutrition · 2015
    Meta-analysis13 studies pooledHeart Health forGreen Tea
  20. Effect of Green Tea on Blood Pressure in Healthy Individuals: A Meta-Analysis.
    Yıldırım Ayaz E; Dincer B; Mesci B · Alternative therapies in health and medicine · 2023
    Meta-analysis680 participants9 studies pooledHeart Health forGreen Tea
  21. Green tea extract reduces blood pressure, inflammatory biomarkers, and oxidative stress and improves parameters associated with insulin resistance in obese, hypertensive patients.
    Bogdanski P; Suliburska J; Szulinska M; Stepien M; Pupek-Musialik D; Jablecka A · Nutrition research (New York, N.Y.) · 2012
    Randomized trial56 participantsHeart Health forGreen Tea
  22. Green tea intake lowers fasting serum total and LDL cholesterol in adults: a meta-analysis of 14 randomized controlled trials.
    Zheng XX; Xu YL; Li SH; Liu XX; Hui R; Huang XH · The American journal of clinical nutrition · 2011
    Meta-analysis1,136 participants14 studies pooledHeart Health forGreen Tea
  23. Effects of green tea on lipid profile in overweight and obese women.
    Li A; Wang Q; Li P; Zhao N; Liang Z · International journal for vitamin and nutrition research. Internationale Zeitschrift fur Vitamin- und Ernahrungsforschung. Journal international de vitaminologie et de nutrition · 2024
    Meta-analysis1,818 participants15 studies pooledHeart Health forGreen Tea
  24. Topical Polyphenon E in the treatment of external genital and perianal warts: a randomized controlled trial.
    Stockfleth E; Beti H; Orasan R; Grigorian F; Mescheder A; Tawfik H; Thielert C · The British journal of dermatology · 2008
    Randomized trial503 participantsSkin Health forGreen Tea
  25. Efficacy, safety and tolerability of green tea catechins in the treatment of external anogenital warts: a systematic review and meta-analysis.
    Tzellos TG; Sardeli C; Lallas A; Papazisis G; Chourdakis M; Kouvelas D · Journal of the European Academy of Dermatology and Venereology : JEADV · 2011
    Meta-analysis1,247 participants3 studies pooledSkin Health forGreen Tea
  26. Green tea polyphenols provide photoprotection, increase microcirculation, and modulate skin properties of women.
    Heinrich U; Moore CE; De Spirt S; Tronnier H; Stahl W · The Journal of nutrition · 2011
    Randomized trial60 participantsSkin Health forGreen Tea
  27. Efficacy of Epigallocatechin-3-Gallate in Preventing Dermatitis in Patients With Breast Cancer Receiving Postoperative Radiotherapy: A Double-Blind, Placebo-Controlled, Phase 2 Randomized Clinical Trial.
    Zhao H; Zhu W; Zhao X; Li X; Zhou Z; Zheng M; Meng X; Kong L; Zhang S; He D; Xing L; Yu J · JAMA dermatology · 2022
    Randomized trial180 participantsSkin Health forGreen Tea