Ozempic lawsuits are proceeding through coordinated federal and state litigation involving Ozempic users who allege they suffered serious injuries after taking the diabetes drug and other GLP-1 medications.
Federal lawsuits involving gastrointestinal Ozempic injuries are centralized in multidistrict litigation (MDL) 3094 in the Eastern District of Pennsylvania.
As of September 1, 2026, MDL 3094 included 4,022 pending lawsuits involving allegations of severe gastroparesis, intestinal obstruction, persistent vomiting, and other gastrointestinal complications.
A separate federal multi-district litigation, MDL 3163, coordinates lawsuits alleging that semaglutide medications caused Non-arteritic anterior ischemic optic neuropathy (NAION) and resulting vision loss.
More than 200 vision loss lawsuits are currently pending in that federal proceeding, which is also assigned to U.S. District Judge Karen S. Marston.
Plaintiffs in these filed lawsuits generally allege that manufacturers failed to adequately warn patients about serious risks and, in some complaints, prioritized market expansion over adequate safety warnings.
The current coordinated litigation can be divided into the following major proceedings:
- Federal gastrointestinal injury litigation: MDL 3094 includes more than 4,000 pending lawsuits alleging gastroparesis, intestinal obstruction, ileus, vomiting, and related gastrointestinal injuries.
- Federal NAION litigation: MDL 3163 includes more than 200 lawsuits involving patients who allegedly suffered sudden or permanent vision loss after using semaglutide medications.
- New Jersey gastrointestinal litigation: The New Jersey Supreme Court approved a separate multicounty litigation for state court claims alleging gastrointestinal injuries from GLP-1 medications.
- New Jersey NAION litigation: The court also created a separate New Jersey state court multicounty litigation for claims involving NAION and vision loss. Both New Jersey proceedings are centralized in Bergen County.
The New Jersey Supreme Court’s decision means that gastrointestinal and vision-loss claims can proceed in coordinated state litigation separately from the federal MDLs.
Although some studies have reported a higher risk of NAION among patients prescribed semaglutide, the extent of the association and the question of causation remain subjects of ongoing scientific and legal analysis.
The federal and state proceedings are intended to streamline common discovery, expert evidence, and other shared issues without converting the individual lawsuits into a single class action.
As the litigation develops, courts will continue addressing scientific evidence, warning-label allegations, and other issues that may affect which Ozempic claims ultimately proceed toward trial or resolution.