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Extra Strength Thermo Green Tea

NOW
4.5
★ ★ ★ ★ ★
(1967 ratings)
Green Tea 700 mg
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Score64
A focused green tea capsule with good value. Active-marker standardization is missing is the main drawback.
How scoring works
Quantity:90 Capsule(s) • (90 servings)
Goals:
Metabolism Boost
Anti-Inflammatory Support
Cognitive Support

Score 64

A focused green tea capsule with good value. Active-marker standardization is missing is the main drawback.
How scoring works
$12.32($0.13 per serving)
Vitacost
$ 12.32
Pure Formulas
$ 14.87
Daily Vita
$ 14.50
iHerb
$ 15.67
Daily Vita
$ 12.80
Amazon
$ 15.30
iHerb
$ 15.67
Report prices

Analysis

700 mg of green tea material provides a direct source of catechins that may support antioxidant defenses and normal metabolic signaling. The substantial extract weight is clear, but no catechin or EGCG yield is provided.

Caffeine content is not stated, making stimulant exposure difficult to judge. Active-marker standardization is missing prevents a fully confident comparison with better-characterized extracts.

The capsule format keeps the product focused and easy to fit into a routine. Good value helps, but extract weight alone does not establish potency and the formula offers no complementary ingredients.

Who is it for
  • Adults seeking concentrated green tea catechins
  • People comfortable with potentially caffeinated green tea
Best for
  • Green tea catechin intake
  • Antioxidant support
  • Metabolic-support routines

Pros

  • Provides 700 mg
  • Identifies EGCG or catechin markers
  • Offers good value
  • Simple capsule format

Cons

  • active-marker standardization is missing
  • Caffeine amount is not disclosed
  • No absorption-support ingredients
  • Narrow single-botanical scope

Warnings

  • Concentrated green tea extract has occasionally been linked with liver injury, particularly when taken fasting; stop use for dark urine, jaundice, or persistent upper-abdominal pain.
  • Green tea catechins can reduce non-heme iron absorption, so people using oral iron should separate the servings.
  • Caffeine content is not disclosed, so caffeine-sensitive users cannot predict effects on sleep, heart rate, or anxiety.

Nutrient quality

61 Moderate impact

A concentrated green tea extract is used, but EGCG and polyphenol standardization are not disclosed. The headline amount looks substantial, but unknown catechin strength and stimulant exposure sharply limit confidence.

Ingredient transparency

63 Moderate impact

The total extract amount is clear, but key active-marker and caffeine amounts are missing. No proprietary blend hides the listed active doses.

Customer satisfaction

69 High impact

The supplied average is positive, with very large response volume. Complaint patterns and purpose-related experiences are not supplied.

Value for money

64 Moderate impact

The asking price is only partly justified by the disclosed formula. Serving value is moderate relative to the formula quality.

Report analysis

Goals

Metabolism Boost
Metabolism Boost
Impact
Highest effect
A- Goal FitB+ Strength of SupportB- CoverageA Formula Quality
Green Tea · 700 mg

Green tea extract provides a relevant thermogenic and fat-oxidation strategy at a substantial extract amount. The supplied data does not clearly state the EGCG or caffeine content, which limits precision.

Human evidence supports modest metabolic effects from appropriately standardized green tea extracts. The streamlined formula offers focused support rather than broad nutrient coverage.

Study evidence
Green Tea Supportive 31 studies
Anti-Inflammatory Support
Anti-Inflammatory Support
Impact
Moderate effect
B+ Goal FitF Strength of SupportD+ CoverageA- Formula Quality
Green Tea · 700 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 both effectiveness and tolerance harder to judge. The lean formula is focused, yet its practical depth remains uncertain without an active yield.

Study evidence
Green Tea Mixed 16 studies
Cognitive Support
Cognitive Support
Impact
Moderate effect
C- Goal FitD- Strength of SupportF CoverageB Formula Quality
Green Tea · 700 mg

Green tea may offer antioxidant protection and mild focus support, but the relevant catechin and caffeine yields are unknown. Green tea has human evidence for alertness and antioxidant effects, yet the undisclosed active composition limits confidence.

A 700 mg extract sounds substantial, but no EGCG, polyphenol, theanine, or caffeine amount confirms an effective cognitive dose. The label gives the extract amount without standardization or absorption details.

Study evidence
Green Tea Supportive 32 studies

Ingredients

IngredientAmount per serving
Green Tea extract
700 mg
Gluten Free Adults 18–50 Vegan Dairy Free Vegetarian
Report overview
Green Tea · 700 mg OverallScore8
F Active Ingredient Quality & BioavailabilityF Dose, Safety & Label TransparencyF Value

The large green tea extract amount lacks EGCG or polyphenol standardization, so active strength remains unknown. No absorption technology or caffeine disclosure is provided. Without a stated EGCG yield, neither effective dosing nor value can be verified.

View ingredientView products
Loading alternative details
84 Performance

EGCg Green Tea Extract 400 mg

NOW
<p>Compared with the original, it keeps the green-tea focus and retains relevant support for anti-aging and skin health. A potent, decaffeinated EGCG dose provides focused antioxidant and metabolic support with very good long-term value. Concentrated green tea extract can stress the liver in susceptible people, especially when taken fasting, so use with food and avoid it with liver disease.</p>
84 Performance

Green Tea Extract 500 mg

Source Naturals
<p>Compared with the original, it keeps the green-tea focus and retains relevant support for anti-aging and skin health. A substantial green tea extract amount provides focused botanical support. Value is favorable after considering dose quality and formula focus.</p>
80 Performance

Green Tea

Jarrow Formulas
<p>Compared with the original, it keeps the green-tea focus and retains relevant support for anti-aging and skin health. A concentrated green-tea extract identifies catechins, polyphenols, and EGCG, supporting substantial antioxidant exposure. A high-EGCG extract may cause nausea or rare liver injury, particularly when taken fasting.</p>
84 Budget

EGCg Green Tea Extract 400 mg

NOW
<p>It lowers recurring cost compared with the original while staying in the same green-tea collection. A potent, decaffeinated EGCG dose provides focused antioxidant and metabolic support at very good value. Concentrated green tea extract can stress the liver in susceptible people, especially when taken fasting, so use with food and avoid it with liver disease.</p>
73 Budget

Green Tea

Paradise
<p>It lowers recurring cost compared with the original while staying in the same green-tea collection. A straightforward green-tea extract provides a moderate total amount at low serving cost. Undisclosed caffeine may cause jitteriness or sleep disruption in sensitive users.</p>
84 Budget

EGCg Green Tea Extract

Protocol For Life Balance
<p>The supplied data does not show a lower recurring cost than the original, though it remains an eligible green-tea alternative. A decaffeinated green-tea extract clearly identifies a substantial EGCG and catechin profile. A high-EGCG extract may cause nausea or rare liver injury, particularly when taken fasting.</p>
79 Value

Decaffeinated Mega Green Tea Extract

Life Extension
<p>It matches the original green-tea collection, but the supplied cost data does not establish a cheaper serving. Clear decaffeination and a measured EGCG amount make the active profile easy to understand. The 725 mg dose remains unusually high and may stress the liver, especially when taken fasting or used by someone with liver disease.</p>
77 Value

Green Tea Extract

ZHOU
<p>It matches the original green-tea collection, but the supplied cost data does not establish a cheaper serving. A concentrated green-tea extract identifies catechins, polyphenols, and EGCG, supporting substantial antioxidant exposure. A high-EGCG extract may cause nausea or rare liver injury, particularly when taken fasting.</p>
66 Value

Green Tea Fat Burner

Applied Nutrition
<p>It matches the original green-tea collection, but the supplied cost data does not establish a cheaper serving. 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 larger supply offers better practical value than the smaller version.</p>
Report alternatives

Sources

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

  1. Effects of green tea or green tea extract on insulin sensitivity and glycaemic control in populations at risk of type 2 diabetes mellitus: a systematic review and meta-analysis of randomised controlled trials.
    Wang X; Tian J; Jiang J; Li L; Ying X; Tian H; Nie M · Journal of human nutrition and dietetics : the official journal of the British Dietetic Association · 2015
    Meta-analysis510 participants7 studies pooledMetabolism Boost forGreen Tea
  2. 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
  3. 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
  4. 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
  5. 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
  6. Metabolic response to epigallocatechin-3-gallate in relapsing-remitting multiple sclerosis: a randomized clinical trial.
    Mähler A; Steiniger J; Bock M; Klug L; Parreidt N; Lorenz M; Zimmermann BF; Krannich A; Paul F; Boschmann M · The American journal of clinical nutrition · 2015
    Randomized trial18 participantsMetabolism Boost forGreen Tea
  7. Effect of Acute and Chronic Dietary Supplementation with Green Tea Catechins on Resting Metabolic Rate, Energy Expenditure and Respiratory Quotient: A Systematic Review.
    Rondanelli M; Riva A; Petrangolini G; Allegrini P; Perna S; Faliva MA; Peroni G; Naso M; Nichetti M; Perdoni F; Gasparri C · Nutrients · 2021
    Systematic review499 participants15 studies pooledMetabolism Boost forGreen Tea
  8. Epigallocatechin-3-gallate and postprandial fat oxidation in overweight/obese male volunteers: a pilot study.
    Thielecke F; Rahn G; Böhnke J; Adams F; Birkenfeld AL; Jordan J; Boschmann M · European journal of clinical nutrition · 2011
    Randomized trial10 participantsMetabolism Boost forGreen Tea
  9. Effects of timing of acute catechin-rich green tea ingestion on postprandial glucose metabolism in healthy men.
    Takahashi M; Ozaki M; Miyashita M; Fukazawa M; Nakaoka T; Wakisaka T; Matsui Y; Hibi M; Osaki N; Shibata S · The Journal of nutritional biochemistry · 2020
    Randomized trial17 participantsMetabolism Boost forGreen Tea
  10. Time-of-day-dependent effects of a green tea extract on postprandial glycemia and insulinemia in healthy adults: a randomized, controlled, double-blind, cross-over intervention.
    Sulaimani N; Rosbotham EJ; Warnock R; Polzella L; Judowski R; Nicolotti L; Houghton MJ; Williamson G; Bonham MP · Food & function · 2025
    Randomized trial14 participantsMetabolism Boost forGreen Tea
  11. 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
  12. 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 forGreen Tea
  13. 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
  14. 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
  15. 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
  16. Safety and efficacy of cognitive training plus epigallocatechin-3-gallate in young adults with Down's syndrome (TESDAD): a double-blind, randomised, placebo-controlled, phase 2 trial.
    de la Torre R; de Sola S; Hernandez G; Farré M; Pujol J; Rodriguez J; Espadaler JM; Langohr K; Cuenca-Royo A; Principe A; Xicota L; Janel N; Catuara-Solarz S; Sanchez-Benavides G; Bléhaut H; Dueñas-Espín I; Del Hoyo L; Benejam B; Blanco-Hinojo L; Videla S; Fitó M; Delabar JM; Dierssen M; TESDAD study group · The Lancet. Neurology · 2017
    Randomized trial87 participantsCognitive Support forGreen Tea
  17. Association between tea consumption and risk of cognitive disorders: A dose-response meta-analysis of observational studies.
    Liu X; Du X; Han G; Gao W · Oncotarget · 2018
    Meta-analysis48,435 participants17 studies pooledCognitive Support forGreen Tea
  18. Investigating the Impact of Tea Consumption on Cognitive Function and Exploring Tea-Genetic Interactions in Older Adults Aged 65-105 Years: Findings from the 2002-2018 CLHLS Data.
    Yu L; Yang M; Ye KX; Li C; Zou M; Wang J; Yuan X; Zheng D; Sun C; Zhang Y; Feng Q; Maier AB; Sun L; Feng L; Wang Y; Chen H; Zeng Y · The journal of prevention of Alzheimer's disease · 2024
    Cohort study76,270 participantsCognitive Support forGreen Tea
  19. Consumption of green tea, but not black tea or coffee, is associated with reduced risk of cognitive decline.
    Noguchi-Shinohara M; Yuki S; Dohmoto C; Ikeda Y; Samuraki M; Iwasa K; Yokogawa M; Asai K; Komai K; Nakamura H; Yamada M · PloS one · 2014
    Cohort study490 participantsCognitive Support forGreen Tea
  20. Green Tea Consumption and the Risk of Incident Dementia in Elderly Japanese: The Ohsaki Cohort 2006 Study.
    Tomata Y; Sugiyama K; Kaiho Y; Honkura K; Watanabe T; Zhang S; Sugawara Y; Tsuji I · The American journal of geriatric psychiatry : official journal of the American Association for Geriatric Psychiatry · 2018
    Cohort study13,645 participantsCognitive Support forGreen Tea
  21. 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
  22. 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