Berberine GT

Berberine GT

Metagenics4.8 (176 ratings)
Format:Capsule Quantity: 60 Capsule(s) · 60 servings
Goals
$44.00 $0.73 per serving
iHerbLowest$44.00Pure Formulas$44.00iHerb$44.95

Product analysis

55 out of 100

Berberine GT combines berberine with green tea compounds connected to antioxidant processes. Unclear proportions of the green tea components make it harder to compare the extract with more precisely described alternatives.

AI assessment of the formula, label and price. How scoring works

Nutrient Quality40

Both ingredients have named sources or components, but their form quality remains uncertain. Naming an extract or its compounds alone does not establish how well it performs.

Ingredient Transparency80

Both ingredient amounts and their sources or components are named. The proportions of the green tea compounds remain undisclosed.

Value For Money25

The cost is less favorable when compared on the green tea component. That comparison does not establish the value of the berberine portion.

Customer Satisfaction75

Customer ratings are very favorable. The relatively small review base makes that pattern less established.

Product Focus69

The green tea compounds have a connection to antioxidant processes. That connection does not establish longer life or preserved function from this concentrated extract.

Format
Capsule
Container
60 Capsule(s)
Per serving
$0.73
Customer rating
4.8 · 176 ratings
Report analysis

Goals

Longevity
Longevity
Impact
High effect
C+ Ingredient FitD- PathwaysB+ EvidenceA+ Formulation Logic
Green Tea · 200 mg

Green tea supplies compounds connected to antioxidant processes. Associations with drinking tea and mechanisms involving EGCG do not establish preserved function or longer life from this concentrated extract. The 200 mg serving is recognized in the saved findings, but total extract, beverage exposure and active EGCG amounts are not interchangeable.

How this product is rated for Longevity

Ingredient fit66

The formula's focus and amounts produce a partial fit with the saved ingredient references. The overall roles remain bounded by the specific evidence for this product.
Goal fit
The formula includes ingredients for other uses, so its focus on aging-related outcomes is mixed.
Dose adequacy
The recognized amounts only partly match the saved references; this does not define a proven effective anti-aging dose.

Pathways40

The saved findings are strongest for antioxidant defence, with limited breadth across the other aging-related processes.
Depth
The strongest saved finding concerns antioxidant defence; this describes ingredient roles rather than a demonstrated slowing of aging.
Breadth
Only one pathway reaches the saved coverage threshold, leaving the formula's recognized reach narrow.

Evidence82

Green Tea drives the leading saved evidence finding. The ingredient-specific limitations above still restrict which practical benefits can be expected.
Evidence strength
Green Tea supplies the leading saved evidence finding, but its specific population and outcome limitations still apply.
Studied preparation
The saved findings recognize preparation matches for the qualifying ingredients; this does not extend their evidence to broader aging outcomes.

Formulation logic100

The saved formulation findings identify no matched conflicts and no missing required partners. Amount limitations are retained in the individual findings.
Partner coverage
The recognized ingredients either work independently or have their required partner; no extra combination benefit is established.
Conflicts
No matched ingredient conflict was recorded in the supplied calculation.
Effective doses
All recognized ingredients meet the saved amount threshold, which is a calculation reference rather than proof of anti-aging efficacy.
Study evidence
Green Tea Supportive 9 studies

Ingredients

IngredientAmount per servingScore
Berberine HCl (Phellodendron amurense bark extract)
 500 mg
decaffeinated Green Tea (Camellia sinensis) leaf extract (Catechins, Epigallocatechin Gallate, Caffeine)
 200 mg 49
Gluten Free Adults 18–50 Women Vegetarian
Report overview
Green Tea (Catechins, Epigallocatechin Gallate, Caffeine) · 200 mg OverallScore49
B- Composition And Label DisclosureD- Composition And Label DisclosureF Commercial Price And Usability
A serving contains 200 mg of green tea leaf extract with 80 mg of EGCG. The extract is described as decaffeinated, but the whole-product caffeine total is not established.
How this ingredient is rated

Composition and Label Disclosure70

The 200 mg green tea extract is listed as 40% EGCG.
Declared Green Tea Marker Concentration
The 200 mg green tea extract is listed as 40% EGCG, with 80 mg of EGCG per serving. It also lists 60% catechins.

Composition and Label Disclosure40

A decaffeinated claim is recorded for green tea, but the whole-product caffeine total is not established.
Whole-Product Caffeine Disclosure
A decaffeinated claim is recorded for green tea, but the whole-product caffeine total is not established.

Commercial Price and Usability25

The whole-product price works out to about $1.83 per 200 mg of EGCG.
Cost per 200 mg Declared EGCG
The whole-product price works out to about $1.83 per 200 mg of EGCG.
View ingredientView products
84 Performance

EGCg Green Tea Extract

Protocol For Life Balance

EGCg Green Tea Extract provides a clearly identified, decaffeinated 400 mg EGCG and catechin profile. Compared with the original, it avoids making berberine and a conflicting caffeine entry central to the formula; however, concentrated catechins still warrant taking it with food.

78 Performance

Ageless Cell

Life Extension Geroprotect

Ageless Cell combines decaffeinated EGCG with meaningful N-acetyl-L-cysteine, natural vitamin E, and tocotrienols. Compared with the original, it avoids making berberine and a conflicting caffeine entry central to the formula; however, its broad formula carries a higher serving cost.

74 Performance

Green Tea Phytosome

Thorne

Green Tea Phytosome uses a phospholipid phytosome that may improve absorption of its green-tea extract. Compared with the original, it avoids making berberine and a conflicting caffeine entry central to the formula; however, EGCG yield and caffeine status are not provided.

84 Budget

EGCg Green Tea Extract 400 mg

NOW

EGCg Green Tea Extract 400 mg lowers the serving cost and delivers a focused, decaffeinated 400 mg EGCG formula with strong long-term value. Compared with the original, it avoids making berberine and a conflicting caffeine entry central to the formula; however, highly concentrated green tea extract can still cause nausea or liver stress in susceptible users.

80 Budget

Green Tea

Jarrow Formulas

Green Tea lowers the serving cost and supplies a concentrated green-tea extract at a very low serving cost. Compared with the original, it avoids making berberine and a conflicting caffeine entry central to the formula; however, the repeated marker amounts and missing caffeine detail make the true EGCG yield less certain.

84 Budget

Green Tea Extract 500 mg

Source Naturals

Green Tea Extract 500 mg lowers the serving cost and offers a simple 500 mg green-tea extract with favorable serving value. Compared with the original, it avoids making berberine and a conflicting caffeine entry central to the formula; however, EGCG, polyphenol, and caffeine yields are not specified.

84 Value

EGCg Green Tea Extract 400 mg

NOW

EGCg Green Tea Extract 400 mg delivers a focused, decaffeinated 400 mg EGCG formula at a modest serving cost, creating a useful balance of formulation quality and value. Compared with the original, it avoids making berberine and a conflicting caffeine entry central to the formula; however, highly concentrated green tea extract should be taken with food.

80 Value

Pine Bark Extract 240 mg

NOW

Pine Bark Extract 240 mg pairs 100 mg EGCG with 240 mg pine bark proanthocyanidins for broader antioxidant coverage, creating a useful balance of formulation quality and value. Compared with the original, it avoids making berberine and a conflicting caffeine entry central to the formula; however, caffeine status and marker percentages are not fully stated.

79 Value

Decaffeinated Mega Green Tea Extract

Life Extension

Decaffeinated Mega Green Tea Extract clearly identifies decaffeination and a concentrated EGCG amount, creating a useful balance of formulation quality and value. Compared with the original, it avoids making berberine and a conflicting caffeine entry central to the formula; however, the unusually high dose is less suitable for routine unsupervised use.

Report alternatives

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 participantsLongevity 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 participantsLongevity forGreen Tea
  3. Can teatime increase one's lifetime?
    Nakachi K; Eguchi H; Imai K · Ageing research reviews · 2003
    Cohort studyLongevity 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 participantsLongevity 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 participantsLongevity forGreen Tea