City of Industry, CA - Herbal Science International, Inc. (AKA Jen-On Herbal Science International, Inc.) recalled twelve dietary supplements that contain ephedra, aristoloch ic acid or human placenta because they may present a serious health hazard to consumers. FDA has long regarded dietary supplements containing ephedra as potential health hazards because this botanical contains ephedrine alkaloids. Ephedrine alkaloids are adrenaline-like stimulants that can have potentially dangerous effects on the heart. Recent studies have confirmed that ephedrine alkaloids raise blood pressure and otherwise stress the circulatory system, effects that are linked to adverse health effects like heart attacks and strokes. Based on this and other evidence in the scientific literature, FDA issued a rule in February 2004 prohibiting the sale of dietary supplements containing ephedrine alkaloids because they present an unreasonable risk of illness or injury. The company recalled nine products that contain ephedra, a source of ephedrine alkaloids, as an ingredient sold labeled under the following brands: Wu Yao Shun Qi San, Qing Bi Tang (Nasal Cleanser), Zhong Fong Huo Luo Wan (Stroke Revito Formula), Xiao Qing Long Tang (Little Green Dragon), Ding Chuan Tang, Xiao Xu Ming Tang, Feng Shi Zhi Tong Wan (Joint Relief), Guo Min Bi Yan Wan, Fang Feng Tong Sheng San, Herbal Science International, Inc. also recalled Tou Tong San (Headache Formula) and Du Huo Ji Sheng Tang (Du Huo Joint Relief), two products containing aristolochic acid. Aristolochic acid is a potent carcinogen and nephrotoxin found in certain plants and botanicals. This chemical can cause serious kidney damage and the use of products that c ontain aristolochic acid has been associated with several occurrences of kidney failure. These products have also been linked to an increased risk of kidney cancer in people who have consumed them. Finally, the company recalled Seng Jong Tzu Tong Tan, a product that contains human placenta. Human placenta may transmit disease and dietary supplements that contain it may not be lawfully marketed in the United States. All of the twelve products are packed in white plastic bottles of 100 capsules. All lots are covered in this recall action. These products have been sold nationwide in herbal stores, by acupuncturists and on the internet.