The US Bioterrorism Act demands all firms dealing with food for human or non-human consumption in the US, to have FDA registration. Dietary supplements are regulated as food products and therefore must comply with the registration requirements under the Bioterrorism Act.
Domestic and Foreign companies are required by law to register the facility with FDA for manufacturing, processing, holding, or packing dietary supplements. Foreign facilities are also required to register with the FDA, unless food products from the facility undergo subsequent processing by another foreign firm, before being exported to the US. However, if the processing done by the second foreign firm is of a minimal nature, such as labeling, both firms require FDA registration.
Supplement Facility Registration includes Certificate of Registration