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"…adulterating commercial herbal products with prescription drugs is so common that the US FDA is keeping a running tally of actions against companies selling supplements containing "undeclared drugs": the polite regulatory term for deceptive doping of a useless product with a real drug…Most concerning is when these adulterants might interact with other medications a patient is taking …to dope supplement products with effective drugs is to admit that one is selling garbage: a deceptive practice to prey upon those who choose to seek out "alternative" medical approaches and keep them coming back….This practice also makes one wonder how many anecdotal cases of "success" with herbal products could be attributed to adulteration with prescription drugs. For this reason, I recommend that grant reviewers and journal editors insist that any dietary supplement used in a clinical trial be subjected to extensive chemical analysis as a condition of funding or publication, respectively, including screening for pharmaceutical compounds capable of exerting the therapeutic effect under investigation." Article by David J Kroll, Science Based Medicine (14th April 2009)