Similac vs. Enfamil — Which Cow’s-Milk Formula Was Your Premature Baby Given?

For families considering a NEC lawsuit, the first practical question is also the most fundamental one: which formula was your baby actually given in the NICU? The answer determines which defendant we sue, which trials and rulings are most relevant to your case, and what evidence we need to gather. Most parents do not know the answer when they call us. That is normal. This guide explains how to find out, what the names actually mean, and why the brand matters so much.

Why Brand Identification Is the Qualification Gate

The NEC litigation is brought against two main defendants: Abbott Laboratories (maker of Similac) and Mead Johnson Nutrition, a subsidiary of Reckitt (maker of Enfamil). Both companies manufactured cow's-milk-based premature infant formula products that have been linked to necrotizing enterocolitis (NEC) in premature infants, despite alternatives based on human milk being available.

Without identifying which company's product was used — or whether both were used at different points — the case has no defendant. The litigation pathway, the bellwether trials, and even the law that applies depend on the answer.

The Abbott / Similac Product Family

Abbott Laboratories produces the Similac brand. The Similac products most commonly named in NEC litigation are the specialty premature-infant formulas:

The Mead Johnson / Enfamil Product Family

Mead Johnson Nutrition (a subsidiary of Reckitt) produces the Enfamil brand. The Enfamil products most commonly named in NEC litigation are also the specialty premature-infant formulas:

How to Find Out Which Product Was Used

The single most reliable source is the NICU discharge summary. Most discharge summaries include a feeding history that names the formula by brand, sometimes by product name, and usually includes the calorie concentration. The discharge summary will also note any transitions — for example, from one product to another, or from formula to fortified breast milk — that happened during the NICU stay.

If the discharge summary is silent on brand, the following records often contain the information:

• The full NICU chart — not just the discharge summary, but daily nursing notes, dietitian notes, and feeding tube administration records.
• Pharmacy / dietary department records — the hospital's pharmacy or clinical nutrition department often kept records of which products were stocked and which were dispensed.
• Nursing flowsheets — bedside charting often identifies the bottle or product label.
• Hospital purchasing or supply records — obtained in litigation if needed; identifies which contract the hospital had with which manufacturer.

HIPAA requires the hospital to provide the family with complete medical records on request. The pediatric medical records department is usually the fastest entry point. Records requests typically come back within 30 to 60 days.

What If My Baby Was Given Both Products?

This is common, and it does not disqualify the case. Some NICUs alternate between brands depending on what is in stock. Some babies are transitioned from one product to another during the stay. Cases involving both Similac and Enfamil are brought against both Abbott and Mead Johnson, with the apportionment between defendants determined during the case.

What If The Records Just Say "Premature Formula"?

Generic chart entries like "premature formula" or "PTF 24" (preterm formula at 24 cal/oz) are common. Brand identification then has to come from a different angle:

• The hospital's supply contract (most NICUs use one primary supplier).
• Pharmacy and dietary department records for the specific dates of feeding.
• Depositions of nursing or dietitian staff (during the case itself, not at intake).

If those routes still come up empty, we sometimes have to plead in the alternative against both Abbott and Mead Johnson and let discovery determine the defendant. This is more procedurally complex but not unusual.

What About Donor Milk and Hospital-Made Formulas?

NEC cases involve cow's-milk-based products, not donor breast milk, mother's own milk, or human-milk-derived fortifiers. If your baby received exclusively donor breast milk or human-milk fortifier (like Prolacta Bioscience products), the NEC case framework does not apply because there is no cow's-milk product to sue over.

The NEC litigation theory is that Abbott and Mead Johnson sold cow's-milk-based premature formula despite knowing about the elevated NEC risk in premature infants and without adequately warning hospitals and parents that human-milk-based alternatives existed and reduced that risk. The case rises and falls on cow's-milk exposure.

The Litigation Status by Defendant

As of 2026, the federal NEC MDL (MDL 3026, Northern District of Illinois) is consolidating cases against both Abbott and Mead Johnson. The first bellwether trial in March 2024 resulted in a $60M verdict against Mead Johnson (later reduced post-trial). The 2026 bellwether against Abbott resulted in a $70M jury verdict. Additional bellwethers are scheduled for August 2026, November 2026, and February 2027.

Settlement framework discussions have been ongoing. New cases continue to be filed in both the federal MDL and in state courts where defendants are subject to jurisdiction.

For additional context, see our companion pieces on the Abbott $70M verdict, the 2026 bellwether trials, and the state-by-state filing deadlines.

What To Do This Week

If your premature baby was diagnosed with NEC and may have been fed Similac or Enfamil products in the NICU:

• Request the complete NICU medical record from the hospital where the NICU stay happened. Ask specifically for the discharge summary, daily nursing notes, and feeding records.
• Write down what you remember about feeding: bottle labels you saw, conversations with nurses or dietitians, brand names you heard.
• Schedule a free NEC case review. Bring what you have. We tell you whether the brand question can be answered from what you have, and what to request next if it cannot.

The Bottom Line

Brand identification is not optional in a NEC case. It is the question on which everything else turns. The good news is that hospitals are required by HIPAA to give families their NICU records, those records usually identify the product, and even when they don't, we have litigation tools to compel the disclosure. The first step is the records request. The second step is the free case review. Call (305) 444-7675 or use the form on our home page.