The Dietary Supplement Health and Education Act of 1994 (DSHEA) created a very serious regulatory loophole that has opened the floodgates to thousands of untested dietary supplement products. While many dietary supplements, including most vitamins and minerals taken within recommended limits, are generally safe and can have important health benefits for consumers, there is a significant and growing number of highly questionable products that would probably not be allowed on the market if they were subject to pre-market safety testing.