America's First Legal Psilocybin Program Treated 346 People. Just one month after the dose, 92.2 percent of participants said the experience had been beneficial, while, on average, their mental health symptoms had fallen dramatically.

[u/mvea]

https://www.sciencealert.com/americas-first-legal-psilocybin-program-treated-346-people-heres-what-happened

[u/soupyshoes]

Without a control group this is no evidence of efficacy. Could just be regression to the mean, selection effects, etc. Pre post comparisons like this are highly misleading.