Which act established a formal definition of "dietary supplement"?

The Dietary Supplement Health and Education Act of 1994 is the key legislation that formally defined "dietary supplement." This act provided a clear definition that distinguishes dietary supplements from conventional foods and drugs. It encompasses a broad range of products, including vitamins, minerals, herbs, amino acids, and other substances that are intended to supplement the diet.

Furthermore, this act established guidelines for labeling these products and required that any health claims made by manufacturers be substantiated and not misleading. The act aimed to create a balanced regulatory framework that allowed dietary supplements to be marketed while ensuring consumer safety and informed choice.

In contrast, the other acts mentioned do not address the definition or regulation of dietary supplements directly. The Food and Drug Administration Modernization Act primarily focused on the reform of drug approval processes and food safety. The Best Pharmaceuticals for Children Act deals mainly with pediatric drug research. The Medicare/Medicaid Fraud and Abuse Statute targets fraudulent practices within those healthcare programs. Thus, it is the Dietary Supplement Health and Education Act of 1994 that plays a crucial role in the definition and regulation of dietary supplements.