Grashaus Projects – Canton of Basel-Landschaft

Structured and controlled sale of cannabis in Liestal and Allschwil

In this pilot trial, the key question is whether structured and controlled sales of high‑quality, organically grown cannabis by trained sales personnel in specialty stores can produce changes in use, leading to harm reduction and a reduction in illegal use and associated problems. Also to be investigated is whether participation in the pilot trial leads to improvements from a health (physical), psychological and social perspective – i.e. to a higher quality of life overall. The integration of at-risk users into the support system and the influence of the pilot trial on the cannabis black market will also be investigated.

Research Questions

For certain groups of cannabis users, can structured and controlled sales of high-quality, organically grown cannabis promote harm reduction, integration into the support system, a reduction in illegal use and associated problems, and improvements from a health (physical), psychological and social perspective – i.e. a higher quality of life overall?

Legalisation model

Commercial market
Sales in specialty stores

Responsible organisation(s)

Institution responsible for carrying out the study

Swiss Research Institute for Public Health and Addiction
Konradstrasse 32
8005 Zürich
www.isgf.ch

Prof. Dr. Michael Schaub
[e-mail]
044 448 11 65

Canton(s)

Basel-Landschaft

Commune(s)

• Allschwil
• Liestal

Planned duration of the study

November 2023 to October 2028

Points of sale

Specialty stores

Study type

Observational study

Sample size

Planned total sample size: N = 3.950

Funder

Sanity Group Switzerland AG

Links

www.grashausprojects.ch

Last modification 18.07.2024