The Ozempic myth: Why the most famous GLP-1 isn't the one most people are taking
Ozempic is the most well-known GLP-1 medication, but data shows it accounts for only 7.1% of use. Tirzepatide-based drugs like Zepbound lead in prescriptions. Insurance coverage and cost influence prescribing decisions. Semaglutide (Ozempic/Wegovy) and tirzepatide (Mounjaro/Zepbound) have different FDA approvals and efficacy profiles. First-time semaglutide prescriptions fell 13.3% from March to June 2026.
How this was made

The 30-second read
Why it matters
A shift toward tirzepatide and oral GLP‑1s could reshape revenue expectations for major pharma companies.
Market read
Highlights a sector‑wide transition that may affect stock valuations of GLP‑1 drug makers.
What to watch
Insurance coverage policies and patient affordability could blunt the impact of new oral products.
Background
The article examines why Ozempic, though culturally dominant, is losing market share to newer GLP‑1 drugs like tirzepatide and oral formulations.
Ticker impact
Novo Nordisk's recent FDA approval of oral Wegovy and declining Ozempic market share indicate a shift in GLP-1 usage.
Modest upside if obesity pipeline gains market share.
The article highlights a structural change in GLP‑1 prescribing that could affect Novo Nordisk's revenue mix.
Eli Lilly's launch of Foundayo, the first oral GLP‑1 pill for weight loss, adds competitive pressure to the market.
Potential upside as the oral formulation expands market reach.
First‑time oral GLP‑1 approval is a material development for Lilly's obesity franchise.
Market effects
GLP‑1 market dynamics may shift investor focus toward obesity treatments over diabetes drugs.
U.S. and European obesity drug markets could see reallocation of sales.
The trend affects global pharma players with GLP‑1 pipelines.
Counterpoint
Despite usage shift, Ozempic's brand strength may sustain demand longer than projected.
Key entities
- companyNovo Nordisk
Manufacturer of Ozempic and Wegovy.
- companyEli Lilly
Developer of the oral GLP‑1 pill Foundayo.



