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Green Tea Extract 500 mg

Source Naturals
4.6
★ ★ ★ ★ ★
(1677 ratings)
Green Tea 500 mg
Product Image
Score84
An economical, focused green-tea extract with a large stated weight but no usable potency or caffeine detail. Its apparent value cannot be confirmed without EGCG standardization.
How scoring works
Quantity:120 Tablet(s) • (120 servings)
Goals:
Metabolism Boost
Anti-Inflammatory Support
Skin Health
Anti-Aging

Score 84

An economical, focused green-tea extract with a large stated weight but no usable potency or caffeine detail. Its apparent value cannot be confirmed without EGCG standardization.
How scoring works
$11.99($0.09 per serving)
Pure Formulas
$ 12.36
iHerb
$ 13.40
Vitacost
$ 12.25
Amazon
$ 11.99
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Analysis

The tablet provides 500 mg green-tea leaf extract as its only meaningful botanical active. That looks substantial by weight and keeps the formula simple.

No EGCG, catechin, polyphenol, or caffeine amount is supplied. Extract weight alone cannot establish antioxidant or metabolic potency, and users cannot plan stimulant exposure.

A long supply and low serving cost are practical strengths. Concentrated green-tea extracts may cause nausea and rarely liver injury, so the missing active-yield and use details matter.

Who is it for
  • Adults seeking a simple green-tea extract
  • Value-conscious users who can verify the package details
  • People able to tolerate uncertain caffeine exposure
Best for
  • Single-ingredient green-tea supplementation
  • Long-term serving economy
  • Users who prefer tablets

Pros

  • Provides 500 mg green-tea extract
  • Focused formula avoids unrelated actives
  • Large supply offers excellent convenience

Cons

  • EGCG and polyphenols are not quantified
  • Caffeine content is unknown
  • Active-dose value cannot be verified

Warnings

  • Concentrated green-tea extract may cause nausea and, rarely, liver injury; uncertainty is higher because EGCG content and use directions are not supplied.

Nutrient quality

81 Highest impact

A substantial green tea extract amount provides focused botanical support. Core actives have meaningful depth.

Ingredient transparency

79 High impact

Active ingredients have stated amounts without a proprietary blend. Important standardization, activity, or form details remain missing.

Customer satisfaction

86 Highest impact

The aggregate rating is mixed and is supported by substantial review volume. No specific comments are supplied, so repeated complaints and purpose alignment cannot be confirmed directly.

Value for money

93 Highest impact

Value is favorable for the effective doses and ingredient forms. A focused active profile supports the asking price.

Report analysis

Goals

Metabolism Boost
Impact
High effect
A- Goal FitC Strength of SupportD CoverageA+ Formula Quality
Green Tea · 500 mg

Green tea extract has human evidence for modest effects on thermogenesis and fat oxidation, especially when catechins are paired with caffeine. The 500 mg extract amount is substantial, but EGCG percentage and caffeine content are not supplied.

The single-botanical formula is focused and avoids unrelated ingredients. Missing active-standardization details prevent a reliable estimate of metabolic strength.

Study evidence
Green Tea Supportive 31 studies
Anti-Inflammatory Support
Impact
Moderate effect
B+ Goal FitF Strength of SupportD CoverageA- Formula Quality
Green Tea · 500 mg

Green tea extract may support inflammatory balance through polyphenol antioxidant and cytokine-modulating actions. The large extract weight appears promising, but active EGCG content cannot be determined.

Missing EGCG standardization and caffeine disclosure make effectiveness and tolerance harder to judge. The lean formula is focused, yet practical depth remains uncertain without an active yield.

Study evidence
Green Tea Mixed 16 studies
Skin Health
Impact
Moderate effect
C- Goal FitD+ Strength of SupportD- CoverageB+ Formula Quality
Green Tea · 500 mg

Green tea extract provides antioxidant compounds with plausible relevance to environmental skin stress. The 500 mg extract amount appears substantial, but missing catechin and EGCG standardization makes the active dose uncertain.

The focused formula avoids unrelated actives and clearly states the total extract amount. It does not provide collagen, hydration, barrier-lipid, or a second clearly supported skin pathway.

Study evidence
Green Tea Supportive 37 studies
Anti-Aging
Impact
Moderate effect
B- Goal FitF Strength of SupportD CoverageB+ Formula Quality
Green Tea · 500 mg

Green tea extract has plausible antioxidant and metabolic relevance to healthy aging. The label does not disclose EGCG or total polyphenols, so the strength of those pathways cannot be determined.

The 500 mg extract weight looks substantial but does not reveal the active catechin dose, caffeine content, or absorption quality. Because both EGCG and caffeine are unknown, users cannot gauge stimulant exposure or the liver-related risk associated with concentrated green tea extracts.

Study evidence
Green Tea Supportive 9 studies

Ingredients

IngredientAmount per serving
Calcium
47 mg
Green Tea Leaf Extract
500 mg
Gluten Free Adults 18–50 Dairy Free Sugar Free Vegetarian
Report overview
Green Tea · 500 mg OverallScore8
F Active Ingredient Quality & BioavailabilityF Dose, Safety & Label TransparencyF Value

The large green tea extract dose looks economical but lacks active-marker standardization. No EGCG amount, absorption technology, or caffeine status is disclosed. The low serving cost cannot confirm value without a measurable active dose.

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Sources

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

  1. Green tea and coffee intake and risk of cognitive decline in older adults: the National Institute for Longevity Sciences, Longitudinal Study of Aging.
    Shirai Y; Kuriki K; Otsuka R; Kato Y; Nishita Y; Tange C; Tomida M; Imai T; Ando F; Shimokata H · Public health nutrition · 2021
    Cohort study1,305 participantsAnti-Aging forGreen Tea
  2. Associations of green tea, coffee, and soft drink consumption with longitudinal changes in leukocyte telomere length.
    Sohn I; Shin C; Baik I · Scientific reports · 2023
    Cohort study1,952 participantsAnti-Aging forGreen Tea
  3. Can teatime increase one's lifetime?
    Nakachi K; Eguchi H; Imai K · Ageing research reviews · 2003
    Cohort studyAnti-Aging forGreen Tea
  4. Influences of tea consumption on self-rated health and life satisfaction among older adults: Evidence from the CLHLS.
    Zou M; Sun C; Yang M; Li C; Wang S; Zheng D; Wang J; Yu L; Sun L; Wang Y; Chen H; Zeng Y · PsyCh journal · 2025
    Cohort study78,345 participantsAnti-Aging forGreen Tea
  5. Double-blinded, placebo-controlled trial of green tea extracts in the clinical and histologic appearance of photoaging skin.
    Chiu AE; Chan JL; Kern DG; Kohler S; Rehmus WE; Kimball AB · Dermatologic surgery : official publication for American Society for Dermatologic Surgery [et al.] · 2005
    Randomized trial40 participantsAnti-Aging forGreen Tea
  6. 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
  7. 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
  8. 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
  9. 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
  10. 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
  11. 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
  12. 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
  13. 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
  14. 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
  15. 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
  16. 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
  17. 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
  18. 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
  19. 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