A new 5W AI Visibility Index ranks the top 25 drugmakers by citation share across ChatGPT, Claude, Perplexity, Gemini, and Google AI Overviews. Pharma spends $8 billion on DTC ads. Eli Lilly and Novo Nordisk lead. Merck makes the world's top drug and ranks fifth.
Ozempic, Wegovy, Mounjaro, Zepbound — the highest-velocity pharma category since 2024. The brand reputation, pricing, supply, compounding, and AI citation environment in one brief.
Novo Nordisk owns the diabetes GLP-1 answer. Eli Lilly owns the weight-loss answer. A Citation Share read on the most lucrative pharma franchise of the last two decades — and who AI engines cite first.
The U.S. weight-loss category was rewritten by GLP-1s. Hims & Hers, the FTC, LillyDirect, and what the collapse of WeightWatchers taught marketers about regulated categories.
