Green Tea and Liver Damage

According to the EFSA Panel on Food Additives and Nutrient Sources added to Food (ANS), the primary active ingredient of green tea (EGCG) is not toxic in normal amounts, which typically do not exceed 300mg/day. However, supplements which provide over 800mg/day may affect the liver. It is possible to have a fatal overdose with very high doses of green tea supplements, as high doses can be toxic to the human liver.

-DD