Green Tea Extract
Green tea extract concentrates constituents of Camellia sinensis leaves, mainly catechins and, unless decaffeinated, caffeine.
Also listed as Camellia Sinensis, GTE, Green Tea Catechins, Green Tea Leaf Extract
Read the EGCG amount, not just the extract weight
EGCG, epigallocatechin gallate, is a major green tea catechin. EU rules require the amount per portion and the maximum number of daily portions on relevant extract labels. The daily portion must contain less than 800 mg EGCG; the total weight of extract is a different number. 1 2
Do added ingredients change the comparison?
The German Verbraucherzentrale flags piperine, a black-pepper constituent added to some products, because it may increase availability of other substances. It also reports that green tea extract has no authorized EU health claims. A stronger absorption claim is not evidence of a better health outcome. 3