That fueled investor concerns about new competition in the rapidly growing weight loss drug industry, sending shares of the current obesity players, Novo Nordisk and Eli Lilly , lower on Friday. Eli Lilly shares dropped nearly 3%, while Novo Nordisk's U.S.-traded shares fell more than 1%. Still, investors were pleased with Eli Lilly on Tuesday after the company assured them it can overcome ongoing supply constraints for its popular drugs. Eli Lilly hiked its full-year guidance in part due to optimism around increased production of Zepbound, its diabetes injection Mounjaro and similar drugs for the rest of the year. That signals Novo Nordisk is struggling to meet demand for the treatment.

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Persons: Amgen, Eli Lilly, Bob Bradway, Bradway, Jay Bradner, autoinjector, Novo Nordisk's Wegovy, Eli Lilly's Zepbound, William Blair, Matt Phipps, Michael Yee, Amgen's Bradway, Karsten Munk Knudsen Organizations: Novo Nordisk, Novo Nordisk's, Jefferies, MariTide, Nordisk Locations: Novo Nordisk's U.S, North Carolina, Indiana, Ireland, Germany, U.S