Guide · 2026-08-17
Green tea extract is not a bowl of matcha
The RCT your sales page cites probably used hundreds of milligrams of isolated EGCG. Culinary matcha is a different exposure.
The swap that inflates every matcha ad
A randomised trial can be real and still be the wrong citation. Chen 2016 gave women with central obesity a high-dose green tea extract. That is a capsule protocol with a known EGCG load. It is not 2 grams of stone-milled tea whisked in water.
Matcha still contains EGCG, caffeine, and L-theanine. Those molecules do not jump to extract milligrams because the powder is expensive or ceremonial. A 2,250 mg matcha line on a facts panel is a tea serving. Score it as tea.
What a study dose looks like
Extract trials that report weight or lipid shifts usually sit in the hundreds of milligrams of EGCG per day. EFSA’s liver-injury warning is also about those concentrated catechin products, especially on an empty stomach — not about a morning bowl.
If a brand wants the extract claim, it should sell the extract dose and say so. If it sells matcha, it should stop borrowing extract abstracts.
Related: EGCG · Caffeine · L-theanine
Method: how we grade. Home: Standard Dose.