
Pharma Spent $8 Billion on TV. The Chatbox Cited Eli Lilly Anyway.
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.














