Razavi and colleagues chose the 12 diet pills in much the same way a consumer would. They entered the common search terms �diet pills� and �weight-loss supplements� into Internet search engines Google, MSN and Yahoo and picked the top four hits from each.
The investigators bought and examined the products. From the ingredients listed on the labels of each brand, they identified 11 that were associated with at least one report of life-threatening cardiac complications or death.
Razavi did not disclose brand names of the pills they tested. Instead, he offered a list of the troublesome ingredients found in the pills that he said consumers should watch out for.
They even found one ingredient � a type of ephedra known as Ma Huang root � that has been banned by the FDA since 2004.
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