A study has found unapproved pharmaceutical ingredients were identified in 776 dietary supplements, most of them marketed for sexual enhancement, weight loss or muscle building; 20 percent of the products had more than one unapproved ingredient; and 28 products were named in two or three warnings

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A study has found unapproved pharmaceutical ingredients were identified in 776 dietary supplements, most of them marketed for sexual enhancement, weight loss or muscle building; 20 percent of the products had more than one unapproved ingredient; and 28 products were named in two or three warnings