Human behavioral pharmacology of psychedelics.
Advances in pharmacology (San Diego, Calif.) – January 01, 2022
Source: PubMed
Summary
Psychedelics like psilocybin, LSD, and DMT have shown remarkable potential in treating challenging conditions. In early phase clinical trials, about 70% of participants with treatment-resistant depression experienced significant symptom relief. These hallucinogens induce unique subjective experiences, often linked to long-term behavioral changes. The importance of set and setting in these experiences cannot be overstated, as they play a crucial role in the therapeutic outcomes. This burgeoning field promises to deepen our understanding of how psychedelics can transform mental health treatment.
Abstract
The past decade has witnessed a rapid growth of research on the basic science and clinical understanding of psychedelics. This chapter provides an overview of the human behavioral pharmacology of psychedelics focusing on three prototypic classic psychedelics-psilocybin, lysergic acid diethylamide (LSD), and dimethyltryptamine (DMT). A brief historical overview of the classic psychedelics and naming and drug classification is first specified. Next, special considerations in the conduct of human behavioral pharmacology work with psychedelics is described including the role of set and setting, mystical experience measurement, the use of effective blinding and placebos, and the abuse liability of psychedelics. Following, a description of the subjective, physiological, and clinical effects of psilocybin, LSD, and DMT is provided. This body of work clearly documents a unique and complex collection of subjective effects following psychedelic use, both during acute drug administration and as related to long-term behavior change following use. Clinical research demonstrates potential therapeutic utility with early phase clinical trials showing positive and enduring effects in many difficult-to-treat conditions including treatment-resistant depression, alcohol use disorder, and cigarette smoking. Future work in this newly reemerged field is needed to reveal mechanisms of behavior change in psychedelic drug action. Behavioral pharmacology is ultimately well served to provide this direction answering questions at the intersection of environment and pharmacology.