Final answer:
In the United Kingdom, the regulation of dietary supplements is handled by the Food Standards Agency (FSA), which serves a role similar to the U.S. Food and Drug Administration (FDA).
Step-by-step explanation:
The governmental agency that regulates dietary supplements in the United Kingdom is the Food Standards Agency (FSA). The role of the FSA is similar to that of the U.S. Food and Drug Administration (FDA), which regulates food and dietary supplements in the United States. However, the regulatory approach in the UK may differ from the USA's. In the United States, the FDA regulates dietary supplements under the Dietary Supplement Health and Education Act (DSHEA) of 1994, and manufacturers are responsible for the safety of dietary supplements before they go to market.