Novo Nordisk, the maker of Wegovy, has filed a lawsuit on Tuesday against competitor Eli Lilly alleging that its GLP-1 advertisements are misleading.

The lawsuit follows a cease-and-desist request and argues Lilly is using “deceptive” ads to claim its GLP-1 products are broadly superior to Novo’s medicines. Lilly countered that…

The lawsuit, filed in federal court Tuesday, accuses Eli Lilly of using outdated data in advertising campaigns.