Eli Lilly and CompanyLilly sues six companies over unapproved retatrutide sales, protecting its pipeline and brand.

Eli Lilly and Company filed six lawsuits against US companies it accuses of illegally selling black-market versions of retatrutide, an experimental obesity drug still in Phase 3 trials and not yet approved by regulators anywhere. The lawsuits target compounding pharmacies, medical spas, and online sellers, and Lilly said it has referred more than 200 individuals and entities to the FDA, the Justice Department, state attorneys general, and law enforcement. Lilly Chief Medical Officer Dr. David Hyman said what's being sold on the black market "is entirely unverified, unapproved and not worth the risk." US Customs and Border Protection told Reuters it intercepted more than 690 shipments of illicit GLP-1 drugs in fiscal 2025, and that pace has since accelerated sharply, with more than 1,400 seizures in July 2026 alone. In trials, retatrutide helped overweight or obese patients with type 2 diabetes lose nearly 13% of their body weight after 80 weeks, and Lilly plans to submit it for US approval as a biologic in the first quarter of 2027.
Eli Lilly and CompanyLilly sues six companies over unapproved retatrutide sales, protecting its pipeline and brand.
AstraZeneca PLC
Bristol-Myers Squibb Company
Forte Biosciences Inc
Novo Nordisk A/S
argenx NV ADR