How the FDA Actually Regulates Dietary Supplements

There's a lot of confusion about how dietary supplements are regulated. Here's a straightforward explanation.

Supplements are regulated differently from drugs

Under the Dietary Supplement Health and Education Act (DSHEA), supplements are regulated as a category of food, not as drugs. This means they don't go through the same pre-market approval process that prescription or over-the-counter drugs do.

No FDA "approval" for supplements

The FDA does not approve dietary supplements before they reach the market. Manufacturers are legally responsible for ensuring their products are safe and that label claims are truthful, and the FDA's enforcement role is primarily reactive — investigating and acting on products after concerns arise.

What manufacturers CAN claim

Supplements can make "structure/function" claims — statements about how an ingredient may support normal body structure or function, like "supports joint comfort." They cannot claim to diagnose, treat, cure, or prevent any disease without becoming subject to drug regulations.

What this means for evaluating a product

Because pre-market government evaluation isn't part of the process, the burden of evaluating ingredient quality, dosing, and manufacturing standards falls more heavily on the buyer than it would with a prescription medication. Checking for GMP certification, reading actual ingredient amounts, and consulting your doctor are all part of doing that evaluation yourself.

The bottom line

Understanding this regulatory framework helps set realistic expectations: a supplement's marketing claims reflect what the company is legally allowed to say, not an independent verification of effectiveness.