NEC Baby Formula Lawsuit

What Is the NEC Baby Formula Lawsuit?

The NEC baby formula lawsuit is a mass tort action filed against Abbott Laboratories (maker of Similac) and Mead Johnson Nutrition (maker of Enfamil) alleging that their cow's milk-based infant formulas cause necrotizing enterocolitis (NEC) in premature infants. NEC is a devastating intestinal disease that can lead to emergency surgery, lifelong complications, and death.

These cases have been consolidated into MDL 3026 in the Northern District of Illinois. More than 1,000 families have filed claims, and new cases continue to be added. Plaintiffs allege that the manufacturers knew about the elevated NEC risk associated with cow's milk-based formulas but failed to provide adequate warnings to parents and healthcare providers.

Medical research spanning decades has consistently demonstrated that premature infants fed exclusively on human breast milk have significantly lower rates of NEC compared to those fed cow's milk-based formulas. Despite this evidence, Abbott and Mead Johnson continued to market their products for use in neonatal intensive care units (NICUs) without sufficient warnings about the NEC risk.

If your premature infant developed NEC after being fed Similac or Enfamil products, you may be eligible to file a claim. Learn more about how mass tort lawsuits work to understand the legal process.

What Is Necrotizing Enterocolitis (NEC)?

Necrotizing enterocolitis (NEC) is a serious and often life-threatening gastrointestinal condition that primarily affects premature infants. The disease causes inflammation and bacterial invasion of the intestinal wall, leading to tissue death (necrosis) in portions of the bowel. NEC is one of the most common gastrointestinal emergencies in neonatal intensive care units.

Symptoms of NEC typically appear within the first 2 to 6 weeks of life and may include abdominal swelling and tenderness, bloody stools, feeding intolerance, lethargy, temperature instability, and signs of sepsis. NEC can progress rapidly from initial symptoms to life-threatening illness within hours.

Treatment for NEC ranges from supportive care (antibiotics, bowel rest, IV nutrition) for milder cases to emergency surgery to remove dead intestinal tissue in severe cases. Infants who survive severe NEC may face long-term complications including short bowel syndrome, developmental delays, feeding difficulties, and failure to thrive.

Products Involved in the Lawsuit

The NEC baby formula lawsuit targets specific cow's milk-based products that were marketed for use with premature infants. These include both standalone formulas and human milk fortifiers (products added to breast milk to increase caloric and nutritional content for preterm infants).

Who Qualifies for the NEC Lawsuit?

To be eligible for the NEC baby formula lawsuit, your case must generally meet several key criteria. Not every infant who developed NEC will automatically qualify — the connection to cow's milk-based formula products is essential. If you believe your child may qualify, consult an attorney for a free case evaluation to review the specifics of your situation.

If you are unsure whether you qualify, request a free case review. An experienced attorney can evaluate your child's medical records and determine your eligibility at no cost.

Lawsuit Timeline

The NEC baby formula litigation has evolved over several years, building on decades of scientific research linking cow's milk-based formulas to NEC risk in premature infants. Here are the key milestones:

Settlement Amounts & Verdicts

As of early 2025, no global settlement has been reached in MDL 3026. The litigation is still in the bellwether trial preparation phase. However, attorneys and legal analysts have projected potential settlement ranges based on the severity of injuries, comparable mass tort cases, and the strength of the scientific evidence.

The following ranges represent estimates based on publicly available information. Actual settlement amounts will depend on individual case factors, including the severity of NEC, whether surgery was required, long-term health outcomes, and the strength of the link between formula feeding and the NEC diagnosis.

For more information about how settlements are calculated, see our guide on mass tort settlement amounts.

How to File a Claim

Filing an NEC baby formula claim involves several steps. An experienced attorney will guide you through the entire process, but understanding what to expect can help you prepare. Most attorneys handling NEC cases work on a contingency fee basis, meaning you pay nothing unless your case results in compensation.

Named Defendants

The NEC baby formula lawsuits are directed against the two largest manufacturers of cow's milk-based infant formula products in the United States:

• Abbott Laboratories — Manufacturer of the Similac product line, including Similac Special Care and Similac Human Milk Fortifier. Abbott is one of the world's largest healthcare companies and a dominant player in the infant nutrition market.
• Mead Johnson Nutrition (Reckitt Benckiser) — Manufacturer of the Enfamil product line, including Enfamil Premature and Enfamil Human Milk Fortifier. Mead Johnson was acquired by Reckitt Benckiser in 2017.

Plaintiffs allege that both companies knew about the scientific evidence linking their cow's milk-based products to increased NEC risk in premature infants yet continued to market them without adequate warnings. The lawsuits also allege that these companies promoted their formula products over breast milk in NICU settings, despite the known protective benefits of human milk.

Scientific & Medical Evidence

The link between cow's milk-based formula and NEC in premature infants is supported by a substantial body of peer-reviewed medical literature. Key findings include:

• A 2010 Cochrane systematic review found that formula feeding was associated with a higher incidence of NEC compared to exclusive breast milk feeding in preterm infants.
• A 2011 study published in the Journal of Pediatrics found that an exclusively human milk-based diet reduced the rate of NEC by approximately 50% compared to a diet containing cow's milk-based products.
• Research published in Breastfeeding Medicine (2014) found that cow's milk-based fortifiers increased NEC risk even when added to breast milk.
• The American Academy of Pediatrics (AAP) has recommended human breast milk as the preferred feeding for premature infants, citing NEC risk reduction as a key benefit.
• Multiple hospital systems and NICUs have transitioned to exclusive human milk diets for premature infants based on this evidence, reporting significant reductions in NEC incidence.

The scientific evidence forms a core component of the plaintiffs' case in MDL 3026, supporting the allegation that manufacturers should have warned about the NEC risk associated with their products.

NEC Risk Factors

While several factors contribute to NEC risk, research has identified cow's milk-based formula as a significant and modifiable risk factor. The following diagram illustrates the key risk factors associated with NEC in premature infants:

Among these risk factors, the type of feeding is considered a modifiable risk factor — meaning it can be changed. This is central to the lawsuit's argument: manufacturers could have warned about the risk and recommended breast milk as a safer alternative for premature infants, but chose not to adequately do so. If your child was diagnosed with NEC, consider consulting an attorney to discuss whether you need a lawyer for your claim.