Warning: 'Natural' diet pills tainted with banned prescription drug

Twenty brands of dietary supplements touted as so-called natural weight loss aids have been found to contain a prescription drug pulled from the market for safety concerns, the Food and Drug Administration warned today.

Products marketed under names like “A-Slim 100% Natural Slimming Capsules,” “P57 Hoodia,” “PhentaBurn Slimming Capsules,” and “Dream Body Slimming Capsules,” were found to contain sibutramine. That's actually the medication more commonly known under the brand name Meridia -- a prescription weight-loss drug that was removed from the U.S. market last October  because it was linked to heart attacks and stroke.

According to the FDA warning, “the product poses a threat to consumers because sibutramine is known to substantially increase blood pressure and/or pulse rate in some patients and may present a significant risk for patients with a history of coronary artery disease, congestive heart failure, arrhythmias, or stroke.  This product may also interact in life-threatening ways with other medications a consumer may be taking."

Click here for a full list of products listed in the FDA warnings.