The FDA is cracking down on dietary supplements that are marketed as "cures," "treatments," or preventatives for serious illnesses like Alzheimer's disease, diabetes and cancer.
The FDA commissioner says they will be rolling out "new enforcement strategies," and "a new rapid-response tool to alert the public" of safety issues with a product.
Dietary supplements are not reviewed by the FDA before they hit the shelves, but the agency will get involved if they are deemed unsafe or carry misleading claims.
A study in October 2018 found that nearly 800 of these products sold between 2007 and 2016 contained unproved drug ingredients.
20% of those included at least one unapproved pharmaceutical ingredient.
About three-quarters of Americans take dietary supplements regularly, contributing to a $40 billion industry.
For a list of companies that received advisory letters, click here.
To see the list of companies that received warning letters, click here.
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