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Botanical

EGCG

EGCG (epigallocatechin gallate) is the most abundant catechin in green tea and belongs to the polyphenols, a large group of plant compounds.

LongevityCardiovascularOrgan FunctionWeight ManagementCognition

What it is studied for

The strongest rated effects first. Bars show the size of the effect, the letter grades the evidence, and each rating lists the studies behind it.

InflammationModerateA3 studies
Oxidative stressLongevityModerateA3 studies
Cholesterol balanceCardiovascularModerateA3 studies
Liver healthOrgan FunctionModerateBNo linked study
Weight lossWeight ManagementSmallBNo linked study
Blood pressureCardiovascularSmallBNo linked study
All 8 rated effectsGrouped by health goal, with the publications behind each rating

What is EGCG?

Epigallocatechin gallate, or EGCG, is a catechin found in green tea. Extracts can deliver more concentrated amounts and a different composition from traditionally brewed tea, so their safety cannot simply be inferred from the drink. 1

Key studies

The most recent publications linked to EGCG's ratings.

Epigallocatechin-Gallate: Unraveling Its Protective Mechanisms and Therapeutic Potential.2025Green Tea and Epigallocatechin Gallate (EGCG) for the Management of Nonalcoholic Fatty Liver Diseases (NAFLD): Insights into the Role of Oxidative Stress and Antioxidant Mechanism2021Anti-inflammatory Action of Green Tea.2016Systematic review of green tea epigallocatechin gallate in reducing low-density lipoprotein cholesterol levels of humans2016Therapeutic effect of high-dose green tea extract on weight reduction: A randomized, double-blind, placebo-controlled clinical trial.2016
All 8 studiesEvery publication linked to EGCG

Why people take it

Essential Health13.1%
Cardiovascular12.4%
Immune Support12.4%
Energy10.3%
Longevity10.3%
Weight Management9.7%

SuppCo community snapshot, 2026-09-28. Reasons for use are not evidence that it works.

Questions people ask

Is an EGCG capsule equivalent to a cup of tea?

No. EFSA distinguishes concentrated extracts from traditionally prepared tea because composition and exposure differ. 1

Is 800 mg a safe daily target?

No. It is a level associated with liver-enzyme increases in trials, and covered EU products must provide less than this in their daily portion. 1 2

Did the weight trial prove a 1.1 kg advantage over placebo?

No. That number describes the change within the treatment group reported in the abstract. 3

Can green tea extract interact with cholesterol medicine?

Yes. NCCIH reports reduced atorvastatin levels with green tea extract. 4

Sources