Patent cliffs on legacy products (Trulicity loses exclusivity 2027, Humalog/Humulin face biosimilar competition) - requires pipeline execution to offset $8B+ revenue erosion
Drug pricing legislation and IRA negotiations - Medicare can negotiate prices on drugs 9+ years post-approval starting 2026, potentially impacting Trulicity and future blockbusters
Obesity drug safety concerns - long-term cardiovascular and gastrointestinal safety data still emerging, potential for black box warnings or usage restrictions
Novo Nordisk's semaglutide franchise (Ozempic/Wegovy) maintains 60%+ market share in GLP-1 category - Lilly must execute on superior efficacy messaging and supply availability
Oral GLP-1 competition from Novo's rybelsus and Lilly's own orforglipron could cannibalize injectable franchise at lower price points
Amgen, Pfizer, and Viking Therapeutics developing next-generation obesity drugs with potentially superior profiles - risk of leapfrogging current GLP-1 standard of care
1.79x debt/equity elevated for pharmaceutical sector - driven by $7.8B capex program and M&A activity, though $16.8B OCF provides 2.2x interest coverage
Pension and post-retirement benefit obligations typical of legacy pharmaceutical company - not material relative to $932B market cap
StructuralCompetitiveBalance Sheet