Mescaline is the active hallucinogenic ingredient in peyote. Peyote is a small, spineless cactus historically used by natives in Mexico and the southwestern U.S. as part of religious rites. Mescaline can also be produced synthetically.
Peyote, Lophophora williamsii, Mescal, Buttons, Big Chief, Mescalito, Cactus, Mesc
Effects can be different during each use due to varying potency, the amount ingested, and the user's expectations, mood and surroundings. On some trips, users may experience sensations that are enjoyable. Others can include terrifying thoughts, anxiety, fears of insanity, death, or losing control.
Some users experience "flashbacks", or hallucinogen persisting perception disorder (HPPD), which are reoccurrences of hallucinations long after ingesting the drug. These effects can occur after a single experience with the drug and cannot be predicted or prevented.