Final answer:
The Dietary Supplement Health and Education Act (DSHEA) of 1994 requires dietary supplements to be safe and accurately labeled, prohibiting them from claiming to effectively treat any conditions without FDA approval.
Step-by-step explanation:
The act that states dietary supplements must be safe and accurately labeled, and that they should not promise effective treatment for any conditions is the Dietary Supplement Health and Education Act (DSHEA) of 1994. Under DSHEA, the responsibility for determining the safety of dietary supplements shifted from the government to the manufacturer.
Supplements do not require approval from the U.S. Food and Drug Administration (FDA) before being sold. However, supplement labels must carry a disclaimer if they make any structural or functional claims, stating that the product is not intended "to diagnose, treat, cure, or prevent any disease." This reflects the FDA's regulatory approach to supplements as being more akin to food rather than pharmaceuticals, with a focus on safety and labeling rather than efficacy.