Psilocybin, a hallucinogen, significantly reduces anxiety in patients undergoing psychological therapy. In a sample of 60 individuals with anxiety disorders, 70% reported decreased symptoms after treatment combined with psilocybin and acceptance and commitment therapy. This approach enhances experiential learning, allowing patients to confront and manage their fears more effectively. The intervention showed an effect size of 0.8, indicating strong benefits. By influencing neurotransmitter receptors, psilocybin may promote greater psychological flexibility, a key factor in successful counseling outcomes in clinical psychology and psychiatry.
A group designing a psilocybin-assisted therapy protocol for major depressive disorder adopted Acceptance and Commitment Therapy (ACT) as the psychotherapeutic framework, citing strong overlap between ACT's proposed mechanisms of change and those of psilocybin therapy. The psilocybin experience may provide direct experiential contact with ACT processes that increase psychological flexibility, which can then be reinforced during ACT-informed follow-up sessions. The paper describes the rationale for selecting ACT, areas of synergism between ACT and psilocybin therapy, the treatment model's structure, and its limitations.