Green tea capsules can interfer with the targeted therapy
Posted: Wed Feb 04, 2009 8:55 pm
Some components of green tea may counteract the anticancer effects of one cancer therapy, bortezomib (Velcade(R)), and may be also contraindicated in other cases as well - there are no sufficient number of studies done but it is a warning:
Green tea polyphenols may have the potential to negate the therapeutic efficacy of bortezomib and the study strongly urge patients undergoing bortezomib therapy to abstain from consuming green tea products, in particular the widely available, highly concentrated green tea and EGCG products that are sold in liquid or capsule
form. The team found that EGCG only reacted with proteasome inhibitors that have a boronic acid base (including bortezomib) but did not react with several non-boronic acid-based proteasome inhibitors.
http://www.prweb.com/releases/2009/02/prweb1955794.htm
Green tea polyphenols may have the potential to negate the therapeutic efficacy of bortezomib and the study strongly urge patients undergoing bortezomib therapy to abstain from consuming green tea products, in particular the widely available, highly concentrated green tea and EGCG products that are sold in liquid or capsule
form. The team found that EGCG only reacted with proteasome inhibitors that have a boronic acid base (including bortezomib) but did not react with several non-boronic acid-based proteasome inhibitors.
http://www.prweb.com/releases/2009/02/prweb1955794.htm