Which of the following is not a sponsor of USAN?

The United States Adopted Names (USAN) Council is responsible for creating and maintaining a list of pharmaceutical and chemical names in the United States. The primary purpose of USAN is to ensure that drug names are universally accepted and can be easily identified and distinguished for safety and regulatory purposes. The council consists of various organizations that help guide the naming process.

The Food and Drug Administration (FDA) is not a sponsor of USAN, which is why it is the correct answer. While the FDA plays a significant role in the regulation and approval of drugs, the organization itself does not participate as a sponsor in the USAN naming process. In contrast, organizations such as the World Health Organization (WHO), the United States Pharmacopeia (USP), and the Drug Enforcement Administration (DEA) are involved to varying extents in the support and sponsorship of the USAN initiatives.

The WHO contributes to international naming conventions and assists in harmonizing drug names, while the USP focuses on standards and practices for the quality of medicines and their names. The DEA, dealing with controlled substances, is involved in the naming of drugs that require special regulatory consideration. Thus, the participation of these organizations aligns with the collaborative nature of USAN, while the FDA's role is more