Just how much Medicare price negotiations will negatively impact Novo Nordisk, though, depends on what the final negotiated prices for Ozempic, Wegovy, and Rybelsus will be. In Medicare's negotiations for 2026, the new prices achieved an average of 22% savings.

The new treatment targets gut hormone GLP-1 but also mimics amylin, a hormone released by the pancreas that suppresses hunger.

Novo Nordisk is currently leading the market for incretin therapies with semaglutide-based products Ozempic for type 2 diabetes and Wegovy for obesity, but is coming under competitive pressure from rival therapies from Eli Lilly based on dual GIP/GLP-1 agonist tirzepatide.