In these 2 links a commentator (not an MD) from a CLL group details some new facts on green tea consumption in healthy people & in cancer patients whose liver may be adversely affected by mega doses,
He also describes a pure ECGC extract from green tea prepared as a candy for improved absorption in the mouth (& I assume less side effect on the liver?)
http://www.clltopics.org/Phyto/LatestonGreenTea.htm
Latest on Green Tea Extracts Date: February 5, 2006
http://www.clltopics.org/Phyto/harveys_chocolates.htm
Harvey's Chocolates May 2, 2004
Oral Absorption of EGCG