Black cohosh and green tea extract may get warning labels

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A United States Pharmacopeia (USP) Committee has reviewed reports that
suggest a link between liver damage and the use of products that
contain green tea extracts and black cohosh.

Yes, liver toxicity is rare, but...

Here's what they recommend, as reported in Functional Foods and
Nutraceuticals.

Based on 150 cases for black cohosh and 250 for green tea - of which
30 and 34 people respectively showed "possible" or "probable" liver
damage related to their use - the USP suggests cautions be printed on
product labels.

For example:

"Caution: In rare cases black cohosh has been reported to affect the
liver. Discontinue use and consult a healthcare practitioner if you
have a liver disorder or develop symptoms of liver trouble, such as
abdominal pain, dark urine, or jaundice."
And

"Caution: Must take with a meal. In rare cases extracts from green tea
have been reported to adversely affect the liver. Discontinue use and
consult a healthcare practitioner if you have a liver disorder or
develop symptoms of liver trouble, such as abdominal pain, dark urine,
or jaundice."

Souced from:http://www.thecamreport.com/index.php/2007/07/11/black-
cohosh-and-green-tea-extract-may-get-warning-labels/#more-1109