SOMADERM Gel NDC: 61877-0005-1. The Drug Listing Act of 1972 requires registered drug establishments to provide the FDA with a current list of all drugs manufactured, prepared, propagated, compounded, or processed by it for commercial distribution. Drug products are identiﬁed and reported using a unique, three-segment number, called the National Drug Code (NDC), which serves as a universal product identiﬁer for drugs. The FDA publishes the listed NDC numbers and the information submitted as part of the listing information in the NDC Directory, which is updated daily. The information provided as part of the listing process, NDC number, and the NDC Directory are all used in the implementation and enforcement of the Act.