As high doses of green tea extract supplements for weight loss become more popular, potential liver toxicity becomes a concern. (news.psu.edu)
You should also check with your doctor before supplementing with green tea extract if you're pregnant, breastfeeding, or taking medication. (legionathletics.com)
We use green tea extract as our source of caffeine, and have a special label on the packages of those flavors so you can easily tell that they contain added caffeine. (clifbar.com)