I have been reading about this, and now watching this on the news. For anyone who has been drinking this herbal coffee, or thinking about trying it, please read this link by CNN. The FDA has already issued a serious report about the risk involved. The active chemical in it is similar to Viagra.
http://www.cnn.com/2010/HEALTH/06/19...fee/index.html
If you are taking medications, blood pressure, heart medications, or anything of the sort this could cause problems if your drinking "power coffee".
Stay safe, stay healthy!