Byheart infant formula botulism lawsuit claims have emerged after what the CDC called the largest documented infant botulism outbreak in United States history. Between late 2023 and December 2025, at least 48 infants across 17 states were hospitalized after consuming ByHeart Whole Nutrition Infant Formula. The product was contaminated with Clostridium botulinum, a dangerous bacterium that produces a potent toxin.
- What Is the Byheart Infant Formula Botulism Lawsuit About?
- MDL Case Status and Key Facts
- Who Qualifies for the Byheart Infant Formula Botulism Lawsuit?
- How to File a Byheart Infant Formula Botulism Lawsuit Claim
- Settlement Updates and What to Expect
- State-by-State Considerations
- Frequently Asked Questions
ByHeart recalled all of its infant formula products in November 2025. Federal lawsuits were consolidated into MDL-3178 in April 2026. Families affected by this outbreak may qualify for compensation through the ongoing litigation.
Case Timeline
Last checked: July 09, 2026
What Is the Byheart Infant Formula Botulism Lawsuit About?
| MDL Detail | Current Data |
|---|---|
| MDL Number | MDL-3178 |
| Pending Cases | 21 |
| Presiding Judge | TBD |
| Federal District | TBD |
| Data Source | U.S. Judicial Panel on Multidistrict Litigation |
| Last Updated | July 06, 2026 |
The byheart infant formula botulism lawsuit centers on allegations that ByHeart Inc. sold contaminated powdered infant formula. ByHeart is a New York-based company founded in 2016. It marketed its Whole Nutrition Infant Formula as a premium organic product. However, FDA and CDC investigations confirmed the formula contained Clostridium botulinum. This bacterium causes infant botulism, a serious illness that attacks a baby’s nervous system.
Infant botulism can cause muscle weakness, difficulty breathing, and paralysis. In most cases, affected infants required hospitalization. Some babies needed ventilator support for weeks. The CDC confirmed 28 cases and identified 20 probable cases across 19 states. No deaths were reported. However, many families describe lasting health effects and significant medical expenses.
The FDA traced contamination to organic whole milk powder used in manufacturing. Samples collected at Dairy Farmers of America tested positive for C. botulinum. Whole-genome sequencing confirmed a genetic match to isolates from sick infants. As a result, the byheart infant formula botulism lawsuit includes both product liability and negligence claims against ByHeart Inc.
MDL Case Status and Key Facts
| Detail | Information |
|---|---|
| MDL Number | 3178 |
| Full Title | In re: ByHeart, Inc., Infant Formula Marketing, Sales Practices, and Products Liability Litigation |
| Presiding Judge | Judge Arun S. Subramanian |
| Federal District | Southern District of New York |
| Consolidation Date | April 2, 2026 |
| Approximate Case Count | 25+ (19 initial actions from 12 districts) |
| Bellwether Trials | Not yet scheduled |
The Judicial Panel on Multidistrict Litigation (JPML) consolidated 19 federal lawsuits into MDL-3178 on April 2, 2026. These cases originated from 12 different federal districts. The panel transferred all actions to the Southern District of New York. Judge Arun S. Subramanian was appointed to oversee the consolidated proceedings. Additional cases have been filed since consolidation, bringing the total to approximately 25.
The byheart infant formula botulism lawsuit docket includes two types of claims. Nine complaints allege direct physical injuries to infants who consumed the formula. The remaining cases are class actions asserting economic injuries on behalf of formula purchasers. Judge Subramanian is expected to establish a case management schedule in the coming months. Bellwether trial selection will typically follow discovery and expert witness phases.
Who Qualifies for the Byheart Infant Formula Botulism Lawsuit?
You might be eligible to join the byheart infant formula botulism lawsuit if your child consumed ByHeart Whole Nutrition Infant Formula. The relevant time period spans from late 2023 through November 2025. Children who developed infant botulism symptoms after consuming the product may have the strongest claims. However, parents who purchased the recalled formula may also qualify for economic damage claims.
Qualifying injuries typically include diagnosed infant botulism or botulism-like symptoms. These symptoms include constipation, poor feeding, weak cry, and muscle weakness. More severe cases involve difficulty breathing, lethargy, and paralysis requiring hospitalization. For example, some infants needed mechanical ventilation for extended periods. Medical records documenting the diagnosis and treatment are essential evidence.
To support a byheart infant formula botulism lawsuit claim, families should preserve purchase receipts and product packaging. Lot numbers from recalled cans are particularly valuable. Medical records linking the illness to formula consumption strengthen the case. As a result, consulting a licensed attorney early in the process is strongly recommended. An experienced mass tort lawyer can evaluate the specific facts of your situation.
How to File a Byheart Infant Formula Botulism Lawsuit Claim
Filing a byheart infant formula botulism lawsuit claim begins with consulting a qualified product liability attorney. Many law firms handling this litigation offer free case evaluations. Your attorney will review medical records, purchase history, and the timeline of your child’s illness. They can determine whether your case fits within the MDL or should be filed in state court.
Once retained, your attorney will file a complaint and handle coordination with the MDL proceedings. Plaintiffs in multidistrict litigation are typically required to complete a Plaintiff Fact Sheet. This document details the plaintiff’s product use, injuries, medical treatment, and damages. Discovery will involve exchanging evidence between the parties. The MDL process consolidates pretrial proceedings to improve efficiency.
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Statute of limitations deadlines vary by state. In most cases, personal injury claims must be filed within two to three years of the injury. However, some states apply a discovery rule that extends this deadline. Do not delay in seeking legal advice. The byheart infant formula botulism lawsuit is still in its early stages, and new plaintiffs continue to join. A licensed attorney in your state can confirm applicable deadlines.
Settlement Updates and What to Expect
As of June 2026, no global settlement has been reached in the byheart infant formula botulism lawsuit. The litigation remains in the consolidation and early case management phase. Settlement negotiations typically do not begin until after discovery and bellwether trial preparation. However, early mediation is possible given the strength of the scientific evidence linking the formula to infant botulism.
Bellwether trials serve as test cases in MDL proceedings. Judge Subramanian will likely select a small number of representative cases for early trial. These verdicts help both sides assess the value of claims. Settlement amounts in product liability cases involving infant injuries vary significantly. Factors include the severity of illness, duration of hospitalization, long-term health effects, and economic losses.
The FDA’s confirmation that contaminated milk powder caused the outbreak strengthens plaintiffs’ claims. The whole-genome sequencing evidence is particularly compelling. Typically, MDL cases with strong causation evidence resolve through negotiated settlements. However, each case is unique. Families should consult a licensed attorney to understand what their individual claim may be worth. The timeline for resolution in complex MDL cases often spans several years.
State-by-State Considerations
State tort reform laws can significantly affect the byheart infant formula botulism lawsuit outcomes. California reported the highest number of cases with at least nine affected infants. Texas followed with approximately seven to eight cases. Other states with notable plaintiff counts include Illinois, Pennsylvania, and Ohio. Each state applies different rules for damages, liability standards, and statutes of limitations.
For example, some states cap non-economic damages in personal injury cases. Texas imposes caps on punitive damages. California generally allows broader damage recovery. States like Ohio and Illinois have specific product liability statutes that may affect how claims proceed. While the MDL handles pretrial matters federally, individual trials may be remanded to state courts. You can learn how your state’s laws affect mass tort claims by visiting our state-by-state tort reform guide.
Frequently Asked Questions
What is infant botulism and how is it connected to ByHeart formula?
Infant botulism is a serious illness caused by Clostridium botulinum bacteria producing toxins in a baby’s intestines. The CDC confirmed that ByHeart Whole Nutrition Infant Formula was contaminated with C. botulinum. At least 48 infants in 17 states were hospitalized after consuming the product between late 2023 and December 2025.
Is the ByHeart formula still on the market?
No. ByHeart issued a voluntary recall of two formula lots on November 8, 2025. The company expanded the recall to all infant formula products on November 11, 2025. The FDA continues to monitor the situation and has taken action to improve recall effectiveness for infant formula products.
How long do I have to file a byheart infant formula botulism lawsuit claim?
Statutes of limitations vary by state but typically range from two to four years for personal injury claims. Some states apply a discovery rule that starts the clock when the injury is discovered. Because the byheart infant formula botulism lawsuit is still in early stages, acting promptly is advisable. Contact a licensed attorney to confirm the specific deadline in your state.
Check If You May Qualify
Mass tort eligibility depends on your specific exposure, injuries, and the state where you live. A licensed mass tort attorney can evaluate your situation at no upfront cost — most work on contingency, meaning you pay nothing unless you recover compensation.
Official Sources & Resources
For verified mass tort and MDL information:
- U.S. Judicial Panel on Multidistrict Litigation (JPML)
- U.S. Department of Justice
- FDA Safety Alerts & Recalls
- Centers for Disease Control and Prevention
- U.S. Environmental Protection Agency
Content last reviewed June 2026. This is general educational information, not legal advice. If you notice outdated information, please contact us.
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Attorney Advertising. The information on this page is provided for general informational purposes only and does not constitute legal advice. No attorney-client relationship is created by accessing or using this content. Every case is unique, and results depend on the specific facts and circumstances involved. Past settlement amounts and case outcomes do not guarantee similar results in your case. If you believe you have a legal claim, you should consult with a licensed attorney in your jurisdiction who can evaluate your specific situation.