sydney wolf, of the consumer advocacy group, public citizen, a dangerous ingredient has found its wayments. how do we know subutramine is dangerous? because it used to be in a prescription drug called mi imeridia because it was pulled off the shelves because it cussed heart attack. everything from weight loss formulas to sexual enhancers. >> there have been an unending number of recalls including more even today as we speak. >> given the current system, can people trust what's on the label of a dietary supplement? >> in too many cases they can't. i think that the best dekripgs of a dietary supplement label is don't know in big red letters. >> reporter: we wondered how could what are supposed to be natural supplements make people so sick, and how on earth could they make it all the way to reputable stores? >> it's like the wild west. they do whatever they want. >> wild, wild west. >> you and i could open a supplement company in the back of a pickup truck. >> 25 milligrams of selenium. >> it might not be in the back of a pickup truck, but we're about to set up our own company and create