Known also as the “cactus of the four winds,†San Pedro is one of the most ancient of sacred plants in South America. The oldest known archaeological evidence of its use dates back to 1300 B.C. San Pedro is considered a potent medicine, useful in treating a very broad range of physical, emotional and mental disorders, and with applications for treating addictions. http://www.medicinehunter.com/san-pedro-cactus/