Concentrated extracts have caused liver injury — brewed tea has not.
TrustedSupp Tier System™ · Tier 4Take by choice, or not at all
Check before you startThis one has documented interactions with medication classes where the consequences are serious. If you take any prescription medicine, run it past a pharmacist before starting.
Evidence strength
35/100Limited
WEAKLIMITEDMODERATESTRONGVERY STRONG
What the evidence supports: modest metabolic effects that do not justify the liver risk.
This scores how well-supported the claim above is — not how much benefit you personally would get. A high score on a narrow claim does not extend to everything the product is marketed for.
How long to take it
Short courses at most.
Who it's actually for
Little justification over simply drinking tea.
Safe upper limit
Unverified
EFSA flags 800 mg EGCG per day from supplements as a liver risk threshold
Concentrated EGCG, particularly on an empty stomach, has caused acute liver failure. Brewing tea is not the same thing.