Government Records
Browse supplement-related recalls, warning letters, import alerts, and other regulatory records. Pages identify the affected products or companies and relevant dates.
Records may describe historical actions. Check the official notice for current instructions and the exact products or lots involved.
Supplement Guides
Browse supplement guides covering uses, forms, amounts, and precautions. Each guide includes relevant safety considerations and limitations.
Coverage varies by supplement and preparation. An absent topic or warning does not establish safety or effectiveness.
Interaction Information
Explore information about specific supplement and medication combinations, with relevant evidence, precautions, and limitations. Findings may depend on the preparation, dose, and people studied.
The checker covers supplement–medication combinations. It does not assess drug–drug or supplement–supplement combinations. Missing information does not mean a combination is free of interactions.
Review status is identified on the relevant page. Research summaries are not automatically equivalent to an independent clinical review.
Coverage Limits
This website is not a complete inventory of every supplement, product, regulatory action, or possible interaction. Coverage and available information vary.
A listed product or an absence of safety records is not an endorsement or a finding of safety. Reports of adverse events do not by themselves establish causation.
Updates and Corrections
Relevant dates and review status help readers assess the information on each page. An update to a page does not mean all underlying information has been newly reviewed.
Readers can report missing or incorrect information. Material corrections are recorded on the Corrections page.