Table 3.

Recruitment Methods and Treatment Sites of Psychedelic Medicine Studies

Study	Psychedelic	Recruitment Methods						Treatment Sites
		Outpatient MD Referral	Hospital Referral	Internet Ad Media Ads		Flyer/ Locals Ads	Membership Associations	Location
Osorio et al., 2015	Ayahuasca	✓				✓		Sao Paolo, Brazil
Palhano-Fontes et al., 2017	Ayahuasca	✓		✓	✓			Natal-RN, Brazil
Sanches et al., 2016	Ayahuasca	✓				✓		Sao Paolo, Brazil
Thomas et al., 2013	Ayahuasca		✓					British Columbia, Canada
Brown &Alper, 2017	Ibogaine	✓						Ensenada, Playas de Tijuana, Mexico
Noller, Frampton & Yazar-Klosinski, 2016	Ibogaine	✓						North Island, New Zealand
Bouso et al., 2008	MDMA						✓	Madrid, Spain
Gasseret al., 2014	LSD	✓	✓		✓	✓		Solothurn, Switzerland
Oehen et al., 2013	MDMA	✓	✓					Biberist, Switzerland
Carhart-Harris et al., 2016	Psilocybin	✓						London, UK
Mithoeferet al., 2010	MDMA	✓		✓				South Carolina, USA
Bogenschutz et al., 2015	Psilocybin				✓	✓		Albequerque, NM, USA
Griffiths et al., 2016	Psilocybin	✓		✓		✓		Baltimore, MD, USA
Grab etal., 2011	Psilocybin	✓	✓	✓		✓		Torrence, CA, USA
Johnson et al., 2014	Psilocybin					✓		Baltimore, MD, USA
Moreno et al., 2006	Psilocybin			✓		✓		Tuscon, AZ, USA
Ross et al., 2016	Psilocybin		✓					New York, NY, USA
Carhart-Harris et al., 2018	Psilocybin	✓						London, UK
N = 18	Count (%)	12 (66.7%)	5 (27.8%)	5 (27.8%)	3 (16.7%)	8 (44.4%)	1 (5.6%)

MD Medical Doctor

Hospital Referral includes presentations at local medical or psychiatric hospitals or health offices

Membership associations include women’s groups, mental health support groups and similar private organizations