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Adverse Effects of Herbal Products. Adverse effects of, A, Herbal products and, B, ephedra are underreported to the U.S. Food and Drug Administration. (Data from Litovitz TL, Klein-Schwartz W, Rodgers GC Jr, Cobaugh DJ, Youniss J, Omslaer JC, et al. 2001 Annual report of the American Association of Poison Control Centers Toxic Exposure Surveillance System. Am J Emerg Med. 2002 Sep;20[5]:391–452.)
