Mescaline clinical trials in the registry
Data as of 11 October 2026. Source: ClinicalTrials.gov records held by PsychoactiveMap, refreshed from a reviewed snapshot.
Mescaline is a naturally occurring compound found in several cacti, including peyote and San Pedro. The number of registered studies that mention it is small compared with other compounds on the map, so the counts below are small too.
Educational information, not medical advice. A registry listing is not evidence of safety, benefit or results, and it is not a recommendation. PsychoactiveMap does not recruit, screen or refer participants. Status and other details are copied from the registry and can be out of date, so check the registry record and speak to a qualified health professional before any decision. Read the full disclaimer.
At a glance
- 2 registered Mescaline studies are counted on this page.
By registry status
| Status | Studies | Share |
|---|---|---|
| Completed | 2 | 100% |
By phase
| Phase | Studies | Share |
|---|---|---|
| Phase 1 | 2 | 100% |
Countries
Country is taken from the study's linked research site. 0 of 2 records have no country on file. The top 1 countries are shown.
| Country | Studies | Share |
|---|---|---|
| Switzerland | 2 | 100% |
When studies started
| Start year | Studies |
|---|---|
| 2020 to 2023 | 2 |
Study design
- 2 interventional and 0 observational studies.
- Median planned or actual enrolment is 24 participants (range 16 to 32, across 2 records that report it).
Most recently started studies
The 2 studies with the latest start dates, shown newest first. The order is not a ranking and says nothing about quality. Each ID links to its own ClinicalTrials.gov record, which has the eligibility criteria and contacts.
| Registry ID | Title as registered | Status | Phase | Country | Start |
|---|---|---|---|---|---|
| NCT04849013 | Role of the Serotonin 5-HT2A Receptor in Mescaline-induced Altered States of Consciousness | Completed | Phase 1 | Switzerland | 2021-08 |
| NCT04227756 | Comparative Acute Effects of LSD, Psilocybin and Mescaline | Completed | Phase 1 | Switzerland | 2020-05 |
About this data
Compound tags come from automated matching of the registry search term and have not been checked record by record. Counts are of registered studies, not of people, results or approvals.
Other substance hubs
Psilocybin | MDMA | LSD | DMT | 5-MeO-DMT | Ayahuasca | Ketamine | Ibogaine
Registry status hubs
Recruiting | Not yet recruiting | Active, not recruiting | Enrolling by invitation | Completed | Terminated | Suspended | Withdrawn
Phase hubs
Early Phase 1 | Phase 1 | Phase 2 | Phase 3 | Phase 4 | Phase not applicable