The US Food and Drug Administration ( FDA ) has pledged " one of the most significant modernisations of dietary supplement regulation and marketing in more than 25 years " , with warning labels sent to companies that are making unproven health claims about their products . More than one unapproved pharmaceutical ingredient was found in 20% of those supplements. The FDA does not have oversight over supplements at the point of market entry , but it can step in if products are found to be unsafe or make misleading claims . Previous studies have shown a high number of supplements contain unapproved pharmaceutical ingredients . Around 75 % of Americans use dietary supplement regularly , and the industry is worth over $ 40bn .
The US Food and Drug Administration ( FDA ) has pledged " one of the most significant modernisations of dietary supplement regulation and marketing in more than 25 years " , with warning labels sent to companies that are making unproven health claims about their products . The FDA does not have oversight over supplements at the point of market entry , but it can step in if products are found to be unsafe or make misleading claims . Previous studies have shown a high number of supplements contain unapproved pharmaceutical ingredients . Around 75 % of Americans use dietary supplement regularly , and the industry is worth over $ 40bn .