How dietary supplements are regulated in the U.S.
A plain-language breakdown of the FDA framework, FTC advertising rules, and the labeling practices that separate transparent brands from the rest.
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Supplements are regulated as food, not drugs.
The Dietary Supplement Health and Education Act of 1994 (DSHEA) established the modern framework for supplement regulation in the United States. Under this framework, manufacturers — not the FDA — are responsible for ensuring their products are safe before they reach the market, and products don't require pre-market approval the way pharmaceutical drugs do.
The FDA does retain authority to act after a product is on the market, including removing products found to be unsafe or misbranded, and pursuing enforcement against companies making illegal disease claims.
No pre-market approval
Supplements don't need FDA sign-off before sale, unlike new drugs.
Manufacturer responsibility
Companies must ensure safety and accurate labeling before distribution.
Post-market enforcement
FDA can act against unsafe or misbranded products already on shelves.
Disease-claim limits
Products cannot legally claim to diagnose, treat, cure, or prevent disease.
What a trustworthy supplement label actually shows.
Supplement Facts panel
A standardized panel listing serving size, active ingredients, and amounts — the supplement equivalent of a Nutrition Facts label.
Proprietary blend disclosure
If a blend is used, all ingredients must be listed by name, even if exact individual amounts aren't disclosed.
Third-party testing marks
Voluntary marks like USP or NSF verification indicate independent testing for identity, purity, and potency.
Required disclaimer
Any structure/function claim must carry the statement that FDA has not evaluated it and the product isn't intended to diagnose or treat disease.
Country of manufacture
Reputable brands disclose where a product is manufactured and under what quality standards (e.g., cGMP facilities).
Lot number & expiration
Traceable lot numbers and clear expiration dates allow recalls and quality tracking when issues arise.
Marketing claims answer to a separate agency.
While the FDA governs labeling, the Federal Trade Commission oversees supplement advertising. The FTC requires that health claims be truthful, not misleading, and backed by "competent and reliable scientific evidence" before they're made — the same evidentiary bar applied across other advertised products.
Testimonials must reflect typical results, or include clear disclosures when they don't.
Comparative claims against other named products must be substantiated, not implied.
Endorsements from influencers or affiliates must disclose any material connection to the brand.
Practical checks before you buy.
Verify third-party testing
Look for USP, NSF Certified for Sport, or Informed-Choice marks as a baseline quality signal.
Check drug interactions
Ask a pharmacist before combining supplements with prescription medications, especially blood thinners.
Question miracle claims
Products claiming to cure, reverse, or treat disease are making an illegal claim under U.S. law — treat them with skepticism.
Have a question about a specific product?
Our consumer advisory desk can point you toward how to evaluate a supplement's label and claims.
Contact the advisory desk