San Pedro

1. Any of a number of place names from Spanish named after St. Peter:
   1. uncountableA neighborhood and former city in Los Angeles, California.
   2. uncountableA city and former municipality of Laguna, Philippines.

plural San Pedros

1. A cactus, Echinopsis pachanoi, native to Ecuador, Peru, and Colombia, traditionally used for healing and divination.

   Results tentatively demonstrate the status of San Pedro as a psychedelic, revealing deviations from normal waking consciousness on all 11 subscales of the 11D-ASC, moderate scores of ego-dissolution, and a complete mystical experience in two thirds of the participants.

   2023 October 2, Arne Bohn, Michiel H. H. Kiggen, Malin V. Uthaug, Kim I. M. van Oorsouw, Johannes G. Ramaekers, “Altered States of Consciousness During Ceremonial San Pedro Use”, in The International Journal for the Psychology of Religion, volume 33, number 4, →DOI, →ISSN, pages 309–331

   1 more example

   A Guardia Civil spokesperson said that ayahuasca, San Pedro, toad poison, wild rue and mimosa pudica were prohibited substances in Spain, adding that their consumption was not authorised because, while they were natural substances, they could be highly dangerous to human health.

   2025 August 11, Sam Jones, “Ayahuasca and toad poison seized as police raid spiritual retreats in Spain”, in The Guardian, →ISSN