PSYCHEDELIC PHARMACOLOGY IN PSYCHIATRY: THE MECHANISMS AND THERAPEUTIC POTENTIAL OF PSILOCYBIN, MDMA, AND LSD IN MENTAL HEALTH DISORDERS

Psychedelic substances like psilocybin, MDMA, and LSD are being studied for treating depression, PTSD, and anxiety. They affect serotonergic receptors, altering consciousness, perception, and cognition. Psilocybin and LSD promote neuroplasticity and change the default mode network, supporting lasting improvement in depressive symptoms and existential anxiety. MDMA reduces fear and improves emotional processing in PTSD patients. Trials indicate symptom relief can occur after a few sessions, unlike traditional antidepressants requiring constant use. Challenges include legal regulation, ethical concerns, and side effects such as temporary increased anxiety and cardiovascular issues. The paper reviews neurobiological effects, therapeutic efficacy, and legal contexts, emphasizing the need for further research and policy reform.

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Abstract

Psilocybin, MDMA, and LSD have recently emerged as popular psychedelic substances for use in psychopharmacology in managing various disorders including treatment-resistant depression, PTSD, and anxiety. These substances mainly affect the serotonergic receptors that involve the regulation of consciousness, perceptions, and cognition. These unique alterations in brain connectome show the influence of psilocybin and LSD on neuroplasticity and DMN, therefore supporting the sustained improvement in depressive symptoms and existential anxiety. MDMA, as compared to classical psychedelics, evokes positive changes in emotional processing and reduction of specific fear in PTSD patients. Scientific trials show that the problem can abate after several recurrences after a few sessions, unlike the cases of traditional antidepressants where constant use is necessary. However, there are some shortcomings, like legal regulation, ethical issues, and possible negative impacts, including temporary increased anxiety and cardiovascular issues. This paper aims to analyze the neurobiological effects and therapeutic efficacy of psychedelics along with their legal contexts in the context of modern psychiatry, stressing the importance of future research, policy changes, and a rational clinical prescription of psychedelics for their maximal beneficial impact on mental health.