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A clearer place to start.
Explore questions to ask about labels, category pages, and free resources. This is educational information, not medical advice or a personal supplement recommendation.
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- Browse all categories
- Read about third-party testing
- NIH: Dietary supplements — what you need to know
- FDA: Questions and answers on dietary supplements
- FDA: Food allergies and labeling
- NSF: Supplement and vitamin certification
- NSF: Search certified dietary supplements
Check the complete current label and ask the manufacturer about missing allergen or cross-contact information. Missing information does not mean an ingredient is absent or a product is safe.
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Questions to ask about a label
A certification is not proof that a product works or is safe for everyone. Programs vary in scope.
Category pages to explore
Free resources
NIH and FDA are U.S. government sources. NSF is an independent certification organization, not a government agency.