Children’s Melatonin Lawsuit Alleges Mommy’s Bliss Products Pose Overdose and Seizure Risks

Lawsuit challenges safety of Mommy’s Bliss melatonin gummies, liquid supplements and chewable tablets being marketed for children as young as 3.

Two mothers have filed a class action lawsuit alleging Mommy’s Bliss Kids Sleep supplements potentially expose young children to numerous health complications, despite being advertised as safe and effective sleep aids.

The complaint (PDF) was brought by Mayra Martinez and Alicia Hinestrosa in the U.S. District Court for the Southern District of California on October 12, naming Mom Enterprises LLC as the sole defendant.

Martinez and Hinestrosa maintain that Mommy’s Bliss products are unlawfully marketed as unapproved drugs and improperly display FDA disclaimers, violating federal labeling requirements.

Melatonin Exposure Risks

Melatonin is a hormone naturally produced by the body that helps control sleep patterns by signaling when it is time to rest. It is also available in over-the-counter (OTC) dietary supplements and prescription formulations.

Melatonin supplements and prescription products are commonly used by adults and teenagers to address insomnia, delayed sleep onset and anxiety. However, previous research has raised concerns about potential health complications, including a November 2025 study that found adults who used melatonin for more than a year faced a 90% higher risk of developing heart failure.

Researchers have also identified potential dangers associated with melatonin use among children. A 2015 study raised concerns about possible cardiovascular, immune system and metabolic complications, while a 2024 study by the U.S. Centers for Disease Control and Prevention (CDC) found that more than 11,000 children received emergency room treatment following accidental melatonin ingestion.

The CDC also reported that melatonin poisonings involving infants and young children increased by more than 400% between 2009 and 2024.

Children’s Melatonin Allegations 

According to the lawsuit, Mom Enterprises promotes the supplements using misleading safety and effectiveness claims, including statements that the products contain “child-safe melatonin” and “support restful sleep.”

These representations allegedly encourage parents to believe the supplements have been established as safe for young children, despite research raising concerns about the potential health risks of pediatric melatonin use, including overdose and seizure risks.

The filing also points out that a single Kids Sleep gummy contains 1 milligram of melatonin, which the mothers contend may be excessive for small children. It cites research indicating that much smaller doses can raise melatonin levels in adults to typical nighttime concentrations.

Martinez and Hinestrosa allege that Mommy’s Bliss markets Kids Sleep as a treatment for sleeplessness and insomnia, effectively promoting the supplements as drugs that require FDA approval, which Mom Enterprises allegedly never obtained.

The lawsuit also challenges the product’s labeling, claiming the disclaimer that the FDA has not evaluated its health claims appears on the back of the packaging rather than alongside the sleep-related claims prominently displayed on the front.

“These claims are misleading, as melatonin, the primary active ingredient in Kids Sleep, is unsafe for children.”

— Mayra Martinez et al. v. Mom Enterprises LLC

According to the complaint, Martinez purchased Mommy’s Bliss Kids Sleep approximately once a month from Walmart stores near Pomona, California, between April 2025 and early 2026. Hinestrosa reports making similar purchases at Walmart locations in Racine, Wisconsin, and Antioch, Illinois, from approximately 2022 through early 2026.

Both women claim their families used the supplements as directed, yet they would not have purchased them had they known about the alleged safety concerns and regulatory violations.

As a result, the two mothers maintain the products were effectively worthless because they were allegedly unsafe and unlawfully marketed. Martinez and Hinestrosa raise allegations of unfair competition, violations of consumer protection laws and breach of implied warranty.

The filing seeks class action status on behalf of consumers throughout the United States who purchased Kids Sleep for personal or household use beginning January 1, 2019, with special subclasses for California, Wisconsin and Illinois purchasers. It is also pursuing at least $10 million in classwide restitution and damages, along with punitive damages, corrective advertising and an injunction against the challenged marketing practices.

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