"That means that in the past, various weight-loss supplements have been found to contain weight-loss drugs or other drugs at higher doses than what would be allowed in a prescription dose," Sandon added. "So while people might have this perception that it's all natural since it's coming from a coffee bean, with supplements in general it's still a buyer-beware market."
For more on dietary supplements, visit the Office of Dietary Supplements of the U.S. National Institutes of Health.
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