TY - CHAP M1 - Book, Section TI - Peyote Ingestion A1 - Williams, Saralyn R. A1 - Thurman, R. Jason A2 - Knoop, Kevin J. A2 - Stack, Lawrence B. A2 - Storrow, Alan B. A2 - Thurman, R. Jason PY - 2021 T2 - The Atlas of Emergency Medicine, 5e AB - Peyote (Lophophora williamsii) is a cactus plant found primarily in the southwestern United States. The cactus contains a significant amount of mescaline, a potent hallucinogen with structural similarities to norepinephrine. Peyote buttons and seeds are frequently ingested for recreational use but are also used in the religious ceremonies of some Native American groups. Toxicity of peyote is generally mild and self-limited, but hypotension and respiratory depression can occur. Mescaline induces some sympathomimetic effects due to its similarity to norepinephrine; marked visual hallucinations and a sense of depersonalization follow. These effects are often accompanied by unpleasant GI symptoms such as severe nausea and vomiting. Full recovery from these symptoms usually occurs within a few hours. SN - PB - McGraw-Hill CY - New York, NY Y2 - 2024/11/13 UR - accessemergencymedicine.mhmedical.com/content.aspx?aid=1181057174 ER -