Eisenkraft Klein D, Zenone M, Kesselheim AS - JAMA Network Open
Over two years, $7.5 million was spent on pay-per-click (PPC) direct-to-consumer online advertising to promote semaglutide (Ozempic) in the US, with substantial spending targeting weight-loss keywords and competitor drug names, even though Ozempic is not FDA-approved for weight loss. Given that PPC advertising can influence consumer behavior, the FDA should issue guidelines on appropriate use of this advertising strategy or review PPC content to prevent misleading drug promotion.
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Eisenkraft Klein D, Kesselheim AS - Clinical Pharmacology & Therapeutics
Daval CJR, Kesselheim AS - STAT
Cai CL, Bucha S, Kesselheim AS, Rome BN - Journal of General Internal Medicine