Mescaline Mexico. Europeans noted use of peyote in Native American religious ceremonies upon early contact, notably by the Huichols in Mexico. Other mescaline-containing cacti such as the San Pedro have a long history of use in South America, from Peru to Ecuador. In traditional peyote preparations, the top of the cactus is cut off, leaving the large tap root along with a ring of green photosynthesizing area to grow new heads. These heads are then dried to make disc-shaped buttons. Buttons are chewed to produce the effects or soaked in water to drink. However, the taste of the cactus is bitter,
Hallucinogenic fish in the flesh of the fish. Toxins from the green algae "Caulerpa prolifera" in the Mediterranean Sea appear to be implicated, as is the seagrass "Posidonia oceanica". When herbivores eat seagrass leaves they ingest algal epiphytes and toxic dinoflagellates that live on the seagrass leaves. The German anthropologist Christian Rätsch thinks that dreamfish might contain the hallucinogen DMT. Ichthyoallyeinotoxism, or hallucinogenic fish inebriation, is a clinical syndrome that refers to a hallucinogenic inebriation of a distressing nature that can arise from consuming hallucinogenic fish. It is characterised by "psychologic disturbances of hallucination and depression. Gastrointestinal disturbance may occur". "Ichthyoallyeinotoxism is