Citizen Petition from Siri & Glimstad LLP on behalf of Informed Consent Action Network

The commenter provides a scientific article from the Journal of Physiology to support the need for a prenatal warning regarding acetaminophen use. They argue that the drug crosses the fetal blood-brain barrier and that prolonged exposure may pose a neurodevelopmental risk to the fetus.

An individual commenter supports the consideration of next-generation analgesic technologies, specifically mentioning SynCore Biotechnology's SNP-810, as a safer alternative to conventional acetaminophen. They argue that products with differentiated metabolic pathways and reduced toxic burden should be evaluated under distinct regulatory frameworks rather than being grouped with legacy products.

The Informed Consent Action Network (ICAN) argues that sibling-control analyses in prenatal neurodevelopment research are often unstable and potentially biased, and therefore should not be used to dismiss potential risks from prenatal acetaminophen. They advocate for the FDA to weigh these studies alongside other evidence to justify a precautionary prenatal warning.

The Informed Consent Action Network supports the citizen petition requesting a precautionary warning on prenatal acetaminophen use. They argue that biomarker-based studies provide more reliable evidence of adverse neurodevelopmental outcomes by reducing recall bias and exposure misclassification compared to self-reporting studies.

The Informed Consent Action Network, represented by Siri & Glimstad LLP, supports the proposed action. They argue that a new study on rodent models provides biologically plausible evidence of developmental neurotoxicity from in utero acetaminophen exposure, justifying a precautionary warning during pregnancy.

Americans for Scientific Integrity supports the proposed action by providing supplemental evidence that suggests precautionary risk communication regarding prenatal acetaminophen exposure is appropriate. They argue that recent studies showing structural brain differences and potential risks for ADHD and autism, combined with biological considerations regarding metabolic windows, warrant clearer information for pregnant individuals and clinicians.

The commenter is submitting a preprint research paper and additional references to support the scientific context of the citizen petition. They argue that acetaminophen is a developmental neurotoxin that contributes to autism spectrum disorder (ASD) and advocate for changes in clinical practice, specifically regarding its use during vaccination.

Americans for Scientific Integrity is submitting a supplemental comment to support the Informed Consent Action Network's petition regarding acetaminophen use during pregnancy. They argue that a new peer-reviewed study on rodent neurotoxicity provides evidence of biological plausibility for the petition's request for precautionary labeling.

Kenvue Brands LLC opposes the proposed labeling changes for over-the-counter acetaminophen products, arguing that the scientific evidence linking prenatal use to neurodevelopmental disorders is unreliable and methodologically flawed. The company contends that the requested warnings would be misleading, violate the First Amendment, and contradict the FDA's evidence-driven regulatory framework.

Americans for Scientific Integrity supports the request for a pregnancy warning on acetaminophen and argues that the FDA should review the pregnancy and pediatric petitions together. They contend that evaluating these two periods in isolation ignores the cumulative risk to neurodevelopment during a single, continuous biological exposure window.