EU Commission Regulation extracts (UK to follow EU regulation)

> "The mean daily intake of (-)-epigallocatechin-3-gallate resulting from the consumption of green tea infusions ranges from 90 to 300 mg/day."

> "The Authority also concluded that, based on the available data on the potential adverse effects of green tea catechins on the liver, there is evidence from interventional clinical trials that intake of doses equal to or above 800 mg of (-)-epigallocatechin-3-gallate per day in the form of a food supplement, has been shown to induce a statistically significant increase of serum transaminases in treated subjects compared to control subjects, which is indicative of liver injury."

A 2018 story: a high dose green tea supplement of damage liver https://www.bbc.co.uk/news/stories-45971416

Green tea supplements are still popular and some still very have high doses:

- Amazon UK: https://www.amazon.co.uk/s?k=green+tea+capsules

- Amazon DE: https://www.amazon.de/s?k=green+tea+capsules