Which of the following is a requirement for dietary supplements marketed in the U.S.?

Dietary supplements marketed in the U.S. are required to meet current good manufacturing practices (CGMPs). This ensures that the products are consistently produced and controlled according to quality standards, which helps to guarantee the safety, identity, strength, quality, and purity of the supplements. Adhering to CGMPs means that manufacturers must evaluate their products to ensure they contain the ingredients listed on the label in the declared potency and amount, and that they are free from contaminants and impurities.

The requirement for good manufacturing practices plays a crucial role in maintaining safety and efficacy for consumers, which is essential in the dietary supplement industry where products are often used without the oversight that pharmaceuticals receive.

In contrast, dietary supplements do not need to receive approval from the FDA prior to being marketed, which distinguishes them from prescription medications. Furthermore, dietary supplements are not required to include prescription information since they can be sold over the counter. Lastly, they are subject to specific labeling requirements, so they cannot be exempt from these regulations. This context underlines the importance of CGMPs in promoting the integrity of dietary supplements available to consumers.