Warning letters for direct-to-consumer advertising: a five-year retrospective analysis

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Background: Direct-to-consumer pharmaceutical advertising (DTCPA) is a ‘grey area’ that the Food and Drugs Administration (FDA) in the United States (US) regulates through the Centre for Drug Evaluation and Research (CDER). One of the purposes of DTCPA is to educate and empower patients via popular media such as television, radio, ...

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