Peyote (Lophophora williamsii)
What Is Peyote?
Peyote is the common name for Lophophora williamsii, a plant of the Cactaceae family, native to the Chihuahuan desert of Mexico and Texas. The material in circulation is crown / button (ethnobotanical). Peyote is the name in everyday use, while Lophophora williamsii is the name that identifies it unambiguously across languages, trade documents and safety literature. Its character is described as earthy, bitter, faintly green-vegetal, which is often how the raw material is checked for quality.
Peyote entered the reference literature through use rather than through chemistry. Older sources are concerned with where it grows, when it is gathered and how it is prepared, questions that still shape the material on sale today. Beyond its practical use it carries cultural associations — central sacrament of Huichol and Native American Church ceremony — a plant of vision and prayer.
Today most searches for Peyote come from people reading about wound healing and weight management, or checking how it sits alongside a medication they already take. The use most often documented in the literature is studied historically for alcohol-use-disorder outcomes in Native American Church members, followed by mescaline is a research tool for serotonergic 5-HT2A pharmacology.
How Does Peyote Work?
Peyote works as a mixture rather than a single isolated compound, and its profile is usually described by the class of constituents present in crown / button (ethnobotanical) rather than by one marker molecule.
Before its chemistry was known, Peyote was judged by what it did in the cup: how strongly it brewed, how it tasted, and how little or much was needed. Those notes are why particular preparations survived and others did not.
Published research is limited, leaning on small trials, laboratory work and animal models, and this profile cites 2 sources. Reported findings centre on contains roughly 1–6% mescaline (3,4,5-trimethoxyphenethylamine) by dry weight along with pellotine and anhalonidine. Where research exists, it examines studied historically for alcohol-use-disorder outcomes in Native American Church members, mescaline is a research tool for serotonergic 5-HT2A pharmacology and traditional topical poultice use for wounds in Northern Mexico. These are areas of study, not established outcomes, and results differ by preparation and dose.
How the plant is prepared changes what you actually get. Its constituents move readily into water and alcohol — so a preparation made in another medium will not carry the same fraction of the plant, which is why traditional recipes specify one over another.
Peyote is studied as a whole preparation because isolating one fraction tends to behave differently from the material it was taken out of — a recurring finding across the plant-chemistry literature.
Because these constituents are processed by the same pathways that handle many medicines, Peyote is documented as interacting with ssris / snris, mao inhibitors and lithium. That is a question of shared metabolism rather than of potency, and it is the main reason the plant is listed in interaction references at all.
Dose, plant part and growing conditions all shift the constituent profile, so two products carrying the name Peyote can differ substantially; this is why reference entries specify crown / button (ethnobotanical) and, where they exist, standardisation markers.