Echinopsis pachanoi (also known as Trichocereus pachanoi or San Pedro cactus) is a fast-growing columnar cactus native to Argentina, Bolivia, Chile, Ecuador and Peru. It contains mescaline and other psychoactive alkaloids. History & Culture Echinopsis pachanoi has a long history of being used in Andean traditional medicine. Archeological studies have found evidence of use going back two thousand years, to Moche culture. [1] Although Roman Catholic […]