Key points from article :
Jim, the patient, had started taking a green tea supplement for preventing cardiac diseases.
He had been taking the green tea supplement for two to three months when he became ill.
At least 80 cases of liver injury are linked to using green tea supplements.
A potentially toxic ingredient found in green tea is called Epigallocatechin-3-gallate or EGCG.
Catechin doses from green tea, at or above 800mg per day may pose health concerns.
Drinking modest amounts of green tea is very safe according to a green tea supplements injury specialist.