glp-1 employer coverage news october 2025 Retiree Health Insurance Developments – Mass Retirees GLP-1 trends 2025: real-world data,

Whats Going On

Supply challenges add another layer

GLP-1 Market Size: USD 68.65 billion in 2026 | USD 195.01 billion by 2035 | CAGR: 12.3% | Leading Molecule: Semaglutide ( 52.1% revenue share) | Dominant Region: United States ( 62.8% revenue share) GLP-1 Weight Loss Drug Market Highlights: Key Data at a Glance ( 2026 ) GLP-1 Weight Loss Drug Market Size 2026 : USD 68.65 billion , forecast USD 195.01 billion by 2035 at 12.3% CAGR Dominant drug class: Dual GIP/GLP-1 Agonists (tirzepatide) and Injectable GLP-1 RA Monoagonists (semaglutide) with 78.4% combined revenue share Fastest-growing route: Oral GLP-1 formulations at 34.2% CAGR through 2035 driven by injection-free patient access expansion GLP-1 market leaders: Novo Nordisk and Eli Lilly with approximately 87% combined prescription weight management drug revenue share in 2026 Most prescribed weight loss molecule: Semaglutide (Wegovy and Ozempic) with 52.1% global GLP-1 market revenue share in 2026 FDA-approved anti-obesity GLP-1 drugs: Four molecules including semaglutide, tirzepatide, liraglutide, and oral semaglutide as of 2026 Global obesity patient pool: More than 1.1 billion adults with obesity globally

Retatrutide has shown to increase insulin secretion

Adding GIP signaling appears to enhance insulin response and metabolic efficiency, delivering even greater weight reduction and glycemic control