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doi: 10.3390/antiox13091092, PMID: [DOI] [PMC free article] [PubMed] [Google Scholar] 187
Retrieved 11 July 2023

Regulatory updates should be verified at FDA.gov

Histamine acts as a neurotransmitter involved in the contractions of the intestinal muscles.[ref] People with food allergies and IBS had significantly higher levels of H1 and H2 receptors in their intestines.[ref] Histamine receptors in the brain: A 2026 study explored the role of histamine and histamine receptors in different regions of the brain
