FDA’s Office of Prescription Drug Promotion (OPDP) will study the role of endorsers, including celebrities, in direct-to-consumer advertising, the agency informed the White House budget office Monday (Jan. 27). The research will comprise two separate studies to examine four types of endorsers and test two types of disclosure language. The studies will expand upon previous research, which found that physicians and pharmacists were the most persuasive type of endorser for over-the-counter products, and that expert endorsers are seen to have...