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"In conclusion, although the use of natural drugs is extensive, patients' knowledge of their potential adverse effects is poor. A public educational campaign, with inclusion of the need to report such usage to the family physician, should be implemented, and questions on the use of complementary medicine/natural drugs should be incorporated as an integral part of the history taking by primary care physicians." Giveon SM, Liberman N, Klang S, Kahan E., Patient Educ Couns. 2004 Apr;53(1):5-11