The U.S. Food and Drug Administration regulates prescription drugs as medications while treating dietary supplements as foods [1].

This distinction creates a significant gap in how products are vetted for safety and efficacy before they reach the public. Consumers often mistake supplements for pharmaceutical-grade treatments, despite the lack of similar federal oversight.

Prescription drugs must undergo a rigorous pre-market approval process [1]. This requirement includes extensive safety and efficacy testing to ensure the medication performs as intended and does not cause undue harm before it is allowed on the market [1].

Dietary supplements operate under a different set of rules [1]. These products do not require pre-approval from the FDA before they are sold to consumers [1]. While manufacturers are responsible for ensuring the safety of their products, they are prohibited from claiming that a supplement can treat or cure a specific disease [1].

Because supplements are regulated as foods, they do not undergo the same clinical trial phases as prescription drugs [1]. This means the evidence supporting the benefits of a supplement is often less robust than the data supporting a prescription medication [1].

Healthcare providers encourage patients to disclose all supplement use during medical appointments [1]. This communication is vital because supplements can interact with prescription medications, or mask underlying health conditions [1].

“The FDA regulates prescription drugs as drugs... whereas dietary supplements are regulated as foods”

The regulatory divide means that the burden of proof for safety and efficacy rests with the manufacturer for drugs, but largely with the consumer and provider for supplements. Because supplements bypass the FDA's pre-market approval process, users rely on manufacturer claims rather than government-verified clinical data.