Supplement reference
EGCG (Green Tea Extract)
A sourced reference on EGCG (Green Tea Extract) identity, evidence limits and safety context.
Source and review status
Published sources checked
Sources checked on: 6 September 2026
Qualified clinical review: Pending. This page has not been clinically reviewed.
About this source check
AI-assisted editorial source checking covers the cited material and its stated limits. It is not a systematic review, verification of a supplied product, or clinical sign-off.
Editorial role: InfoAddict. Last material change: 6 September 2026. Next source review: 6 March 2027.
Identity and product form
EGCG is epigallocatechin gallate, a catechin in green tea. A concentrated extract is not equivalent to drinking green tea.
Sources: National Center for Complementary and Integrative Health
What the reviewed evidence can and cannot show
NCCIH says human studies on green tea and cancer have been inconsistent and do not permit a prevention conclusion. This page makes no metabolic, detoxification or fat-loss claim for EGCG.
Sources: National Center for Complementary and Integrative Health
Safety and limits
NCCIH reports liver problems in a small number of people using concentrated green-tea extracts. People with liver problems or medicines should seek product-specific advice.
Sources: National Center for Complementary and Integrative Health
Published sources
- EGCG (Green Tea Extract): Usefulness and Safety
National Center for Complementary and Integrative Health. Current NIH public information page; accessed 6 September 2026.
Supports: Identity, evidence limits and safety points stated for this botanical or ingredient.
Change history
| Date | Change | Clinical-review status |
|---|---|---|
| 6 September 2026 | Source-linked reference published | Pending |
Keep a private record
UpgradeYourself lets you keep private records of routines and observations you choose to discuss with a qualified health professional. This reference does not recommend starting, stopping or changing an item.