The supplement industry is largely unregulated in the US and UK. These are the official channels for reporting unsafe products — and the independent resources for checking what the evidence actually says before you spend money on something that may do nothing.
Want to check what's actually in a product? Try our free supplement analyzer to scan any label.
Report a supplement side effect or safety issue to the US regulator
What: Report adverse reactions or safety issues with supplements, food, and medical products to the US Food and Drug Administration.
When to use: If a supplement causes an unexpected reaction or you believe a product is unsafe or mislabelled.
Want to know more? Read our full guide →Report an unsafe supplement or medicine in the UK
What: The UK's official system for reporting suspected side effects of medicines and supplements.
When to use: Any unexpected reaction to a supplement or medicine sold in the UK.
Want to know more? Read our full guide →Check what the science actually says about a supplement ingredient
What: Independent, non-commercial database of supplement research. No ads, no affiliate links. Summarises the actual clinical evidence for hundreds of supplements.
When to use: Before buying any supplement — check what the research actually shows for your specific goal.
Want to know more? Read our full guide →Get reliable NHS guidance on vitamins and supplements
What: NHS guidance on vitamins, minerals and supplements — what they do, recommended doses, and when they're necessary vs unnecessary.
When to use: For reliable, conservative guidance on common supplements from a trusted medical source.
Want to know more? Read our full guide →