Green tea extract

Coming later

Camellia sinensis leaf extracts standardised to polyphenols, catechins, or EGCG. Not in the directory yet.

Green tea extract is made from the leaf of Camellia sinensis. Grades are standardised to total polyphenols, total catechins, or EGCG (epigallocatechin gallate), and those are different figures. China is a major producer of green tea and of green tea extract.

High daily intakes of concentrated EGCG have been linked to liver-safety concerns. The European Food Safety Authority assessed this in 2018. Intake is a formulation decision for the brand, not something this directory rates.

No supplier review has been published.

Specifications

Botanical source: Camellia sinensis (L.) Kuntze is the expected species. It is not confirmed for any offering here.
Plant part: Leaf. Not reviewed against a specification.
Common grades and distinctions: Total polyphenols by UV versus catechins or EGCG by HPLC.; Caffeinated versus decaffeinated grades, and the decaffeination method.

Listing status

This ingredient is not in the directory yet. Sample and quote requests are not open for it.

Buying considerations for US supplement brands

Pesticide residues and heavy metals are common testing focuses for tea leaf. Ask for methods and limits.

Coming soon.

Sources and method

Evidence reviewed 2026-11-15. Methodology 2026-11-14.1.

No source has been filed on this page yet. That is an incomplete research state.