Psychedelic Science

Psychedelic Science (PS) is a biannual scientific conference on psychedelic drugs hosted by the Multidisciplinary Association for Psychedelic Studies (MAPS).^[1][2][3] The first conference was in 2017^[2] and the fifth was in 2025.^[3] Psychedelic Science is the largest conference on psychedelic drugs in the world.^[2][1][4][5] More than 12,000 people attended the fourth conference in 2023.^[6][5] In 2023 and 2025, the conference was hosted in Denver, Colorado, where psychedelics have been legalized for medical use as well as decriminalized.^[6][7]

Psychedelic Science
Abbreviation	PS
Discipline	Psychedelic medicine
Publication details
Publisher	Multidisciplinary Association for Psychedelic Studies (MAPS)
History	2017 (1st) to present
Frequency	Biannual
Website	https://www.psychedelicscience.org/

List of events

• Psychedelic Science 2017 (PS2017) [1st], April 19–24, 2017, Oakland, California^[2]
• Psychedelic Science 2023 (PS2023) [4th], June 19–23, 2023, Denver, Colorado^[1][4][5][8]
• Psychedelic Science 2025 (PS2025) [5th], June 16–20, Denver, Colorado^[3][9]