he FDA warned consumers Monday to neither consume nor purchase a slate of more than 25 different weight-loss products. Each may contain "undeclared, active pharmaceutical ingredients that may put consumers' health at risk," the FDA said in a release.br /br /The drugs the FDA warns could be tainted:br /br /# 2 Day Dietbr /# 3x Slimming Powerbr /# 3 Day Dietbr /# 5x Imelda Perfect Slimmingbr /# 7 Day Herbal Slimbr /# 7 Diet Day/Night Formulabr /# 8 Factor Dietbr /# 999 Fitness Essencebr /# Extrim Plusbr /# Fatloss Slimmingbr /# GMPbr /# Imelda Perfect Slimbr /# Japan Lingzhi 24 Hours Dietbr /# Lida DaiDaihuabr /# Miaozi Slim Capsulesbr /# Perfect Slimbr /# Perfect Slim 5xbr /# Phyto Shapebr /# ProSlim Plusbr /# Royal Slimming Formulabr /# Slim 3 in 1br /# Slim Express 360br /# Slimtechbr /# Somotrimbr /# Superslimbr /# TripleSlimbr /# Venom Hyperdrive 3.0br /# Zhen de Shoubr /br /The FDA warning comes after an analysis found that the "undeclared active pharmaceutical ingredients" in some of the products contained a controlled substance, a drug not approved for marketing in the United States and a suspected cancer-causing agent.br /br /According to the FDA:br /br / These weight loss products, some of which are marketed as ?dietary supplements,? are promoted and sold on various Web sites and in some retail stores. Some of the products claim to be ?natural? or to contain only ?herbal? ingredients, but actually contain potentially harmful ingredients not listed on the product labels or in promotional advertisements. These products have not been approved by the FDA, are illegal and may be potentially harmful to unsuspecting consumers.br /br / The FDA advises consumers who have used any of these products to stop taking them and consult their healthcare professional immediately. The FDA encourages consumers to seek guidance from a healthcare professional before purchasing weight loss products.br /br /Source a href="http://www.cbsnews.com/stories/2008/12/22/fyi/main4683442.shtml"here./a