RecruitingPhase 1Drug trialSafety and Preliminary Efficacy of Organic Whole Psilocybin-Containing Mushrooms to Treat Patients Suffering From PTSDThis study will examine the safety and preliminary efficacy of psilocybin mushrooms to treat adults with PTSD. Up to 24 participants will take part in this study. Each participant will ingest psilocybin from dried mushrooms in a chocolate formulation.