This bill aims to strengthen federal oversight of dietary supplements by amending the Federal Food, Drug, and Cosmetic Act. It establishes new prohibited acts, making it illegal to introduce into interstate commerce any product marketed as a dietary supplement that does not meet the statutory definition of a dietary supplement. Additionally, the legislation prohibits the introduction of dietary supplements that have been prepared, packed, or held with the assistance or direction of a person previously debarred from the industry. To bolster enforcement, the bill expands existing import exclusion authorities, allowing such non-compliant products to be stopped at the border. Furthermore, it grants new seizure authorities, enabling the government to confiscate products that violate these newly established prohibitions, thereby enhancing consumer protection.