Table 1. Database and article search with corresponding criteria and number of articles.
JAMA = Journal of the American Medical Association; PTSD = post-traumatic stress disorder
| Search ID | Searches | Search criteria | Number of articles | Database |
| 1 | Psilocybin and PTSD | Within the last 10 years, free full-text | 16 | PubMed |
| 2 | Psilocybin and psychiatric illness | Within the last 10 years, free full-text, clinical trials, randomized trials | 11 | PubMed |
| 3 | Psilocybin and depression | Within the last 10 years, free full-text, clinical trials, randomized trials | 9 | PubMed |
| 4 | Psilocybin and psychiatric disorders | Within the last 10 years, free full-text, peer-reviewed, English language | 10 | EBSCOhost |
| 5 | Psilocybin and PTSD | Within the last 10 years, free full-text, peer-reviewed, English language | 1 | EBSCOhost |
| 6 | Psilocybin and depression | Within the last 10 years, free full-text, peer-reviewed, English language | 21 | EBSCOhost |
| 7 | Psilocybin and psychiatric illness | research articles | 5 | JAMA |
| 8 | Psilocybin and psychiatric illness | Research articles in the last 10 years | 2 | The Lancet |
| 9 | Other | Through searching the reference list of previous meta-analyses and/or review articles | 3 | NA |
| Total articles | 78 |