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GLP-1 Weight Loss Drug Race Heats Up as Pfizer and Amgen Challenge Novo Nordisk and Eli Lilly

6/21/2026

The scramble to compete in the GLP-1 weight loss drug market is intensifying.

Pharmaceutical companies Pfizer and Amgen are developing products to take on Novo Nordisk's Wegovy and Eli Lilly's Zepbound — two medications that have been wildly popular since coming to market.

At the same time, Novo Nordisk and Eli Lilly are working on new offerings to protect their lead in a category they built.

What GLP-1 Drugs Are and Why They Matter GLP-1 stands for glucagon-like peptide-1, a hormone the body naturally releases after eating that signals the brain to reduce hunger.

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