5W Weight Loss & Metabolic Health AI Visibility Index (May 19): Novo Nordisk + Eli Lilly Capture Nearly 100% of GLP-1 Citations Across ChatGPT, Claude, and Perplexity
5W Public Relations published the fourth installment of its AI Visibility Index, finding two manufacturers — Novo Nordisk and Eli Lilly — account for nearly 100% of GLP-1-class citations inside ChatGPT, Claude, Perplexity, and Google AI Overviews. Five products — Wegovy, Zepbound, Ozempic, Mounjaro, and Saxenda — capture about 57% of all weight-loss-and-metabolic-health category citations. Founder Ronn Torossian attributes the citation moat to peer-reviewed clinical data cadence, named-author editorial coverage, and regulatory events treated as content events, with content velocity outpacing the broader news cycle.