A second lawsuit has been filed against baby formula company ByHeart by a Washington-based food safety law firm following an outbreak of infant botulism cases across the country.

Earlier this month, ByHeart was notified by the Federal Drug Administration (FDA) about potentially dozens of cases of infant botulism that were reported nationwide since August 2025.

“Infant botulism is a rare but potentially fatal illness that presents a serious threat to the health of infants, which occurs when Clostridium botulinum spores are ingested and colonize the intestinal tract, producing botulinum neurotoxins in the immature gut of infants. Affected infants can present with some or all of the following signs and symptoms: constipation, poor feeding, ptosis (drooping eyelid), sluggish pupils,

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