 Some users find that the visual effects produced by "O"-acetylpsilocin more closely resemble those produced by DMT than those produced by psilocin or psilocybin.These differences could be possible if psilacetin is psychoactive in itself and not merely as a prodrug.Despite this, there have been no controlled clinical studies to distinguish among the phenomenological effects of psilacetin, psilocin, and psilocybin.