10/20/2026
Who Has to Warn You About Drug Side Effects?
A man claims Mounjaro and Trulicity caused gastroparesis — but in Indiana, Eli Lilly’s duty to warn about side effects runs to his doctor, not to him.
Frank Campbell Jr., 61, of North Carolina, sued Indianapolis-based Eli Lilly and Co. in Marion Superior Court on Oct. 7, 2026, under the Indiana Product Liability Act, alleging inadequate warnings about gastroparesis. Lilly says its FDA-approved labels warn of gastrointestinal reactions, sometimes severe. A federal GLP-1 multidistrict litigation (MDL 3094, E.D. Pa.) had 3,928 pending cases as of Aug. 3, 2026.
The rule: Under the learned intermediary doctrine, a prescription drug maker satisfies its duty to warn by adequately warning doctors (Ortho Pharm. Corp. v. Chapman, Ind. Ct. App. 1979).
Marc Lopez Law Firm
120 E. Market St., Suite 710
Indianapolis, IN 46204
317 632 3642
marclopezlaw.com